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Rojas-López JA, Cabrera-Santiago A, Adragna C, Ibarra-Ortega BE, López-Luna JE, Contreras-Rodríguez JA, Martínez-Ortiz E. Commissioning of MRI-guided gynaecological brachytherapy using an MR-linac. Biomed Phys Eng Express 2024; 10:055032. [PMID: 39111326 DOI: 10.1088/2057-1976/ad6c54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 08/07/2024] [Indexed: 08/28/2024]
Abstract
Purpose. To evaluate the feasibility of use of an 1.5 T magnetic resonance (MR)-linear accelerator MR-linac for imaging in gynaecologic high-dose-rate (HDR) brachytherapy.Method. Commissioning measurements for MR images quality control, geometric distortion, dwell position accuracy, applicator reconstruction and end-to-end test for a tandem-and-ring applicator were performed following the recommendations of American Brachytherapy Society, International Commission on Radiation Units and Measurements and Report of the Brachytherapy Working Group of the Spanish Society of Medical Physics. The values for MR-based IGABT were compared to the corresponding values with computed tomography (CT).Results. Measured distorsions for the MR images were less than 0.50 mm compared to the CT images. The differences between 3D displacements for all dwell positions were 0.66 mm and 0.62 mm for the tandem and ring, respectively. The maximum difference is 0.64 mm for the distances from the applicator tip obtained using the films. The CT and MR dose differences for the right and left 'A' points were 0.9% and -0.7%, respectively. Similar results were observed in terms of dose distribution for CT and Mr The gamma passing rate was 99.3% and 99.5%, respectively.Conclusion. The use of MR images from an MR-linac used in a radiotherapy service for gynaecological brachytherapy was proved to be feasible, safe and precise as the geometrical differences were less than 1 mm, and the dosimetric differences were less than 1% when comparing to the use of CT images for the same purpose.
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Affiliation(s)
- José Alejandro Rojas-López
- Hospital Almater SA de CV, Álvaro Obregón 1100, Segunda Sección, Mexicali, Baja California, Mexico
- Facultad de Astronomía, Matemáticas, Física y Computación, Universidad Nacional de Córdoba, Av. Medina Allende s/n, Ciudad Universitaria, CP:X5000HUA, Córdoba, Argentina
| | - Alexis Cabrera-Santiago
- Hospital Almater SA de CV, Álvaro Obregón 1100, Segunda Sección, Mexicali, Baja California, Mexico
- Unidad de Especialidades Médicas de Oncología, Av Claridad, Plutarco Elías Calles, 21376, Mexicali, Baja California, Mexico
| | - Celeste Adragna
- Instituto Oulton, Av Vélez Sarsfield 652, Córdoba, Argentina
| | | | - José Eleazar López-Luna
- Hospital Almater SA de CV, Álvaro Obregón 1100, Segunda Sección, Mexicali, Baja California, Mexico
| | | | - Efraín Martínez-Ortiz
- Hospital Almater SA de CV, Álvaro Obregón 1100, Segunda Sección, Mexicali, Baja California, Mexico
- Unidad de Especialidades Médicas de Oncología, Av Claridad, Plutarco Elías Calles, 21376, Mexicali, Baja California, Mexico
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2
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Knoth J, Sturdza A, Zaharie A, Dick V, Kronreif G, Nesvacil N, Widder J, Kirisits C, Schmid MP. Transrectal ultrasound for intraoperative interstitial needle guidance in cervical cancer brachytherapy. Strahlenther Onkol 2024; 200:684-690. [PMID: 38409394 PMCID: PMC11272749 DOI: 10.1007/s00066-024-02207-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/23/2024] [Indexed: 02/28/2024]
Abstract
OBJECTIVE This study aimed to prospectively assess the visibility of interstitial needles on transrectal ultrasound (TRUS) in cervical cancer brachytherapy patients and evaluate its impact on implant and treatment plan quality. MATERIAL AND METHODS TRUS was utilized during and after applicator insertion, with each needle's visibility documented through axial images at the high-risk clinical target volume's largest diameter. Needle visibility on TRUS was scored from 0 (no visibility) to 3 (excellent discrimination, margins distinct). Quantitative assessment involved measuring the distance between tandem and each needle on TRUS and comparing it to respective magnetic resonance imaging (MRI) measurements. Expected treatment plan quality based on TRUS images was rated from 1 (meeting all planning objectives) to 4 (violation of High-risk clinical target volume (CTVHR) and/or organ at risk (OAR) hard constraints) and compared to the final MRI-based plan. RESULTS Analysis included 23 patients with local FIGO stage IB2-IVA, comprising 41 applications with a total of 230 needles. A high visibility rate of 99.1% (228/230 needles) was observed, with a mean visibility score of 2.5 ± 0.7 for visible needles. The maximum and mean difference between MRI and TRUS measurements were 8 mm and -0.1 ± 1.6 mm, respectively, with > 3 mm discrepancies in 3.5% of needles. Expected treatment plan quality after TRUS assessment exactly aligned with the final MRI plan in 28 out of 41 applications with only minor deviations in all other cases. CONCLUSION Real-time TRUS-guided interstitial needle placement yielded high-quality implants, thanks to excellent needle visibility during insertion. This supports the potential of TRUS-guided brachytherapy as a promising modality for gynecological indications.
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Affiliation(s)
- J Knoth
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - A Sturdza
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - A Zaharie
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - V Dick
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - G Kronreif
- Austrian Center for Medical Innovation and Technology, Wiener Neustadt, Austria
| | - N Nesvacil
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - J Widder
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - C Kirisits
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - M P Schmid
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.
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Balaraj K, Roy S, Shanbhag NM, Hasnain SM, El-Koha O, AlKaabi K, Hassan TA, Ansari J, Nasim MY, Dawoud EA, Bin Sumaida A. Clinical Outcomes and Treatment Efficacy in Cervical Cancer Patients in the UAE: A Retrospective Cohort Study. Cureus 2024; 16:e64422. [PMID: 39131041 PMCID: PMC11317079 DOI: 10.7759/cureus.64422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Accepted: 07/12/2024] [Indexed: 08/13/2024] Open
Abstract
Background and objectives Cervical cancer remains a significant global health issue, particularly in low- and middle-income countries. While high-income countries have seen reduced incidence and mortality rates due to effective screening and HPV vaccination programs, these rates are still high in areas with limited healthcare infrastructure. In the United Arab Emirates (UAE), recent efforts are improving public health initiatives and awareness. This retrospective cohort study evaluates clinical outcomes and treatment efficacy in cervical cancer patients at a tertiary cancer center in Al Ain, Abu Dhabi. It analyzes treatment regimens, their effectiveness, and factors affecting survival, disease progression, and treatment completion. Methods and material The study included 275 cervical cancer patients treated between January 2008 and December 2021. Data were extracted from medical records, including demographic information, clinical characteristics, and treatment details. Statistical analyses, including Kaplan-Meier survival curves and Cramér's V correlation matrix, were used to evaluate survival outcomes and the relationships between various categorical variables. Results The mean age of patients was 48.88 years, with the majority being non-nationals, 221 (80.37%). Histopathologically, there were 234 (85.18%) cases of squamous cell carcinoma (SCC) and 33 (11.85%) cases of adenocarcinomas. The International Federation of Gynecology and Obstetrics (FIGO) staging indicated that 137 (49.80%) patients were in stage II and 60 (21.81%) were in stage III. Pelvic lymph node involvement was observed in 139 (50.54%) patients. The treatment modalities included surgery in 39 (14.18%) patients, 3D conformal radiotherapy (3D-CRT) in 247 (89.81%) patients, intensity-modulated radiation therapy (IMRT) in 11 (4.00%) patients, brachytherapy in 213 (77.45%) patients, and chemotherapy in 248 (90.18%) patients. The survival analysis showed no significant differences in survival among different treatment groups, as indicated by the Log-rank test (p = 0.4060). Conclusion The study highlights the demographic and clinical characteristics of cervical cancer patients in the UAE, emphasizing the prevalence of advanced-stage diagnoses and high-grade tumors. Despite significant efforts to improve screening and treatment, cervical cancer remains a concern in the UAE. The findings underscore the need for enhanced early detection and comprehensive treatment strategies. Addressing the study's limitations, such as the retrospective design and the absence of human papillomavirus (HPV) data, could further refine cervical cancer management and improve patient outcomes in future research.
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Affiliation(s)
| | - Shilpi Roy
- Radiation Oncology, Tawam Hospital, Al Ain, ARE
| | - Nandan M Shanbhag
- Radiation Oncology, Tawam Hospital, Al Ain, ARE
- College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, ARE
- Palliative Care, Tawam Hospital, Al Ain, ARE
| | | | | | - Khalifa AlKaabi
- Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, ARE
- Radiation Oncology, Tawam Hospital, Al Ain, ARE
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4
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Chuk E, Yu C, Scott AA, Liu ZA, Milosevic M, Croke J, Fyles A, Lukovic J, Rink A, Beiki-Ardakani A, Borg J, Skliarenko J, Conway JL, Weersink RA, Han K. Clinical Outcomes of 3 Versus 4 Fractions of Magnetic Resonance Image-Guided Brachytherapy in Cervical Cancer. Int J Radiat Oncol Biol Phys 2024:S0360-3016(24)00745-4. [PMID: 38936633 DOI: 10.1016/j.ijrobp.2024.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/30/2024] [Accepted: 06/15/2024] [Indexed: 06/29/2024]
Abstract
PURPOSE Magnetic resonance image-guided brachytherapy is essential in the management of locally advanced cervical cancer. This study compares disease and toxicity outcomes in cervical cancer patients treated with 24 Gy/3 fractions (Fr) versus the conventional 28 Gy/4 Fr. METHODS AND MATERIALS This retrospective study included 241 consecutive patients with International Federation of Gynecology and Obstetrics 2018 stage IB to IVA cervical cancer treated with definitive chemoradiation between April 2014 and March 2021. Disease-free survival (DFS) was estimated using the Kaplan-Meier method and compared using the log-rank test. Cumulative incidence of local failure (LF), distant failure (DF), and G2+ gastrointestinal (GI), urinary and vaginal toxicity were estimated using the cumulative incidence function with death as a competing risk and compared using Gray's test. RESULTS Of the 241 patients, 42% received 24 Gy/3 Fr and 58% received 28 Gy/4 Fr. With a median follow-up of 3.2 (range, 0.2-9.2) years, there were 14 local, 41 regional nodal, and 51 distant failures in 63 (26%) patients. No significant differences were found between the 24 Gy/3 Fr and 28 Gy/4 Fr groups in 3-year DFS (77% vs 68%, P = .21), the 3-year cumulative incidence of LF (5% vs 7%, P = .57), DF (22% vs 25%, P = .86), G2+ GI toxicity (11% vs 20%, P = .13), or G2+ vaginal toxicity (14% vs 17%, P = .48), respectively. The 3-year cumulative G2+ urinary toxicity rate was lower in the 24 Gy/3 Fr group (9% vs 23%, P = .03). CONCLUSIONS Patients with cervical cancer treated with 24 Gy/3 Fr had similar DFS, LF, DF, GI, and vaginal toxicity rates and a trend toward a lower G2+ urinary toxicity rate compared with those treated with 28 Gy/4 Fr. A less resource-intensive brachytherapy fractionation schedule of 24 Gy/3 Fr is a safe alternative to 28 Gy/4 Fr for definitive treatment of cervical cancer.
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Affiliation(s)
- Elizabeth Chuk
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Candice Yu
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Aba Anoa Scott
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Zhihui Amy Liu
- Department of Biostatistics, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Michael Milosevic
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada; Institute of Medical Science, University of Toronto, Toronto, Canada
| | - Jennifer Croke
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Anthony Fyles
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Jelena Lukovic
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Alexandra Rink
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Akbar Beiki-Ardakani
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Jette Borg
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Julia Skliarenko
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Jessica L Conway
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Robert A Weersink
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Kathy Han
- Princess Margaret Cancer Centre, University Health Network, Radiation Medicine Program, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada; Institute of Medical Science, University of Toronto, Toronto, Canada.
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5
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Wang Z, Guo X, Zhao H. Dose-response relationship between volume base dose and tumor local control in definitive radiotherapy for vaginal cancer. BMC Cancer 2024; 24:707. [PMID: 38851692 PMCID: PMC11162573 DOI: 10.1186/s12885-024-12486-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 06/07/2024] [Indexed: 06/10/2024] Open
Abstract
OBJECTIVE This study aimed to establish the dose-response relationship between volume base dose and tumor local control for vaginal cancer, including primary vaginal cancer and recurrent gynecologic malignancies in the vagina. MATERIALS AND METHODS We identified studies that reported volume base dose and local control by searching the PubMed, the Web of Science, and the Cochrane Library Database through August 12, 2023. The regression analyses were performed using probit model between volume based dose versus clinical outcomes. Subgroup analyses were performed according to stratification: publication year, country, inclusion time of patients, patients with prior radiotherapy, age, primaries or recurrent, tumor size, concurrent chemoradiotherapy proportion, dose rate, image modality for planning, and interstitial proportion. RESULTS A total of 879 patients with vaginal cancer were identified from 18 studies. Among them, 293 cases were primary vaginal cancer, 573 cases were recurrent cancer in the vagina, and 13 cases were unknown. The probit model showed a significant relationship between the HR-CTV (or CTV) D90 versus the 2-year and 3-year local control, P values were 0.013 and 0.014, respectively. The D90 corresponding to probabilities of 90% 2-year local control were 79.0 GyEQD2,10 (95% CI: 75.3-96.6 GyEQD2,10). CONCLUSIONS A significant dependence of 2-year or 3-year local control on HR-CTV (or CTV) D90 was found. Our research findings encourage further validation of the dose-response relationship of radical radiotherapy for vaginal cancer through protocol based multicenter clinical trials.
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Affiliation(s)
- Zhiqiang Wang
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, No. 126, Xiantai Street, Changchun, 130033, PR China
| | - Xin Guo
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, No. 126, Xiantai Street, Changchun, 130033, PR China
| | - Hongfu Zhao
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, No. 126, Xiantai Street, Changchun, 130033, PR China.
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Manea E, Chitoran E, Rotaru V, Ionescu S, Luca D, Cirimbei C, Alecu M, Capsa C, Gafton B, Prutianu I, Serban D, Simion L. Integration of Ultrasound in Image-Guided Adaptive Brachytherapy in Cancer of the Uterine Cervix. Bioengineering (Basel) 2024; 11:506. [PMID: 38790373 PMCID: PMC11117609 DOI: 10.3390/bioengineering11050506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/09/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024] Open
Abstract
Cervical cancer continues to be a public health concern, as it remains the second most common cancer despite screening programs. It is the third most common cause of cancer-related death for women, and the majority of cases happen in developing nations. The standard treatment for locally advanced cervical cancer involves the use of external beam radiation therapy, along with concurrent chemotherapy, followed by an image-guided adaptive brachytherapy (IGABT) boost. The five-year relative survival rate for European women diagnosed with cervical cancer was 62% between 2000 and 2007. Updated cervical cancer treatment guidelines based on IGABT have been developed by the Gynecological working group, which is composed of the Group Européen de Curiethérapie-European Society for Therapeutic Radiology and Oncology. The therapeutic strategy makes use of three-dimensional imaging, which can be tailored to the target volume and at-risk organs through the use of computed tomography or magnetic resonance imaging. Under anaesthesia, the brachytherapy implantation is carried out. Ultrasonography is utilised to assess the depth of the uterine cavity and to facilitate the dilation of the uterine canal during the application insertion. In this study, we examine data from the international literature regarding the application of ultrasound in cervical cancer brachytherapy.
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Affiliation(s)
- Elena Manea
- Department of Radiotherapy, Regional Institute of Oncology, 700483 Iasi, Romania; (E.M.)
- “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Elena Chitoran
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (S.I.)
- General Surgery and Surgical Oncology Department I, Bucharest Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
| | - Vlad Rotaru
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (S.I.)
- General Surgery and Surgical Oncology Department I, Bucharest Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
| | - Sinziana Ionescu
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (S.I.)
- General Surgery and Surgical Oncology Department I, Bucharest Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
| | - Dan Luca
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (S.I.)
- General Surgery and Surgical Oncology Department I, Bucharest Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
| | - Ciprian Cirimbei
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (S.I.)
- General Surgery and Surgical Oncology Department I, Bucharest Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
| | - Mihnea Alecu
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (S.I.)
- General Surgery and Surgical Oncology Department I, Bucharest Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
| | - Cristina Capsa
- Radiology and Medical Imaging Department, Bucharest Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
| | - Bogdan Gafton
- Department of Radiotherapy, Regional Institute of Oncology, 700483 Iasi, Romania; (E.M.)
- “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Iulian Prutianu
- “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- Department of Morpho-Functional Sciences I—Histology, University of Medicine and Pharmacy “Gr. T. Popa”, 700483 Iasi, Romania
| | - Dragos Serban
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (S.I.)
- Surgery Department IV, Bucharest Clinical Emergency Hospital, 050098 Bucharest, Romania
| | - Laurentiu Simion
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (S.I.)
- General Surgery and Surgical Oncology Department I, Bucharest Institute of Oncology “Prof. Dr. Al. Trestioreanu”, 022328 Bucharest, Romania
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Cordoba A, Gesta E, Escande A, Noeuveglise A, Cayez R, Halty A, Ladjimi MT, Narducci F, Hudry D, Martinez Gomez C, Cordoba S, Le Deley MC, Barthoulot M, Lartigau EF. Interstitial needles versus intracavitary applicators only for locally advanced cervical cancer: results from real-life dosimetric comparisons. Front Oncol 2024; 14:1347727. [PMID: 38567146 PMCID: PMC10985138 DOI: 10.3389/fonc.2024.1347727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/09/2024] [Indexed: 04/04/2024] Open
Abstract
Background and purpose Image-guided adapted brachytherapy (IGABT) is superior to other radiotherapy techniques in the treatment of locally advanced cervical cancer (LACC). We aimed to investigate the benefit of interstitial needles (IN) for a combined intracavitary/interstitial (IC/IS) approach using IGABT over the intracavitary approach (IC) alone in patients with LACC after concomitant external beam radiotherapy (EBRT) and chemotherapy. Materials and methods We included consecutive patients with LACC who were treated with IC/IS IGABT after radiochemotherapy (RCT) in our retrospective, observational study. Dosimetric gain and sparing of organs at risk (OAR) were investigated by comparing the IC/IS IGABT plan with a simulated plan without needle use (IC IGABT plan) and the impact of other clinical factors on the benefit of IC/IS IGABT. Results Ninety-nine patients were analyzed, with a mean EBRT dose of 45.5 ± 1.7 Gy; 97 patients received concurrent chemotherapy. A significant increase in median D90% High Risk Clinical target volume (HR-CTV) was found for IC/IS (82.8 Gy) vs IC (76.2 Gy) (p < 10-4). A significant decrease of the delivered dose for all OAR was found for IC/IS vs IC for median D2cc to the bladder (77.2 Gy), rectum (68 Gy), sigmoid (53.2 Gy), and small bowel (47 Gy) (all p < 10-4). Conclusion HR-CTV coverage was higher with IC/IS IGABT than with IC IGABT, with lower doses to the OAR in patients managed for LACC after RCT. Interstitial brachytherapy in the management of LACC after radiotherapy provides better coverage of the target volumes, this could contribute to better local control and improved survival of patients.
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Affiliation(s)
- Abel Cordoba
- Department of Radiotherapy and Brachytherapy, Oscar Lambret Center, Lille, France
| | - Estelle Gesta
- Department of Radiotherapy and Brachytherapy, Oscar Lambret Center, Lille, France
| | | | | | - Romain Cayez
- Department Medical Physics, Oscar Lambret Center, Lille, France
| | - Adrien Halty
- Department Medical Physics, Oscar Lambret Center, Lille, France
| | | | - Fabrice Narducci
- Department Gynecologic surgical Oncology, Oscar Lambret Center, Lille, France
| | - Delphine Hudry
- Department Gynecologic surgical Oncology, Oscar Lambret Center, Lille, France
| | | | - Sofia Cordoba
- Department of Radiotherapy and Brachytherapy, Hospital Puerta de Hierro, Madrid, Spain
| | | | - Maël Barthoulot
- Department Biostatistics and Methodology, Oscar Lambret Center, Lille, France
| | - Eric F. Lartigau
- Department of Radiotherapy and Brachytherapy, Oscar Lambret Center, Lille, France
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8
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Owrangi A, Medrano A, Gao Y, Kazemifar S, Hrycushko B, Medin P, Nwachukwu C, Jia X, Albuquerque K. Definitive radiation for advanced cervix cancer is not associated with vaginal shortening-a prospective vaginal length and dose correlation. Brachytherapy 2024; 23:136-140. [PMID: 38242726 DOI: 10.1016/j.brachy.2023.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/12/2023] [Accepted: 10/25/2023] [Indexed: 01/21/2024]
Abstract
PURPOSE Prospectively measure change in vaginal length after definitive chemoradiation (C-EBRT) with Intracavitary Brachytherapy (ICBT) for locally advanced cervix cancer (LACC) and correlate with vaginal dose (VD). MATERIALS AND METHODS Twenty one female patients with LACC receiving C-EBRT and ICBT underwent serial vaginal length (VL) measurements. An initial measurement was made at the time of the first ICBT procedure and subsequently at 3 month intervals up to 1 year post radiation. The vagina was contoured as a 3-dimensional structure for each brachytherapy plan. The difference in VL before and at least 6 months after the last fraction of brachytherapy was considered as an indicator of toxicity. RESULTS The mean initial VL was 8.7 cm (6.5-12) with median value of 8.5 cm. The mean VL after 6 months was 8.6 cm (6.5-12) and VL change was not found to be statistically significant. The median values (interquartile ranges) for vaginal D0.1cc, D1cc, and D2cc were 129.2 Gy (99.6-252.2), 96.9 Gy (84.2-114.9), and 89.6 Gy (82.4-102.2), respectively. No significant correlation was found between vaginal length change and the dosimetric parameters calculated for all patients. CONCLUSION Definitive C-EBRT and ICBT did not significantly impact VL in this prospective cohort probably related to acceptable doses per ICRU constraints. Estimate of vaginal stenosis and sexual function was not performed in this cohort which is a limitation of this study and which we hope to study prospectively going forward.
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Affiliation(s)
- Amir Owrangi
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas.
| | - Astrid Medrano
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
| | - Yin Gao
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
| | - Samaneh Kazemifar
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
| | - Brian Hrycushko
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
| | - Paul Medin
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
| | - Chika Nwachukwu
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
| | - Xun Jia
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
| | - Kevin Albuquerque
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
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Weykamp F, Meixner E, Arians N, Hoegen-Saßmannshausen P, Kim JY, Tawk B, Knoll M, Huber P, König L, Sander A, Mokry T, Meinzer C, Schlemmer HP, Jäkel O, Debus J, Hörner-Rieber J. Daily AI-Based Treatment Adaptation under Weekly Offline MR Guidance in Chemoradiotherapy for Cervical Cancer 1: The AIM-C1 Trial. J Clin Med 2024; 13:957. [PMID: 38398270 PMCID: PMC10889253 DOI: 10.3390/jcm13040957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/13/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
(1) Background: External beam radiotherapy (EBRT) and concurrent chemotherapy, followed by brachytherapy (BT), offer a standard of care for patients with locally advanced cervical carcinoma. Conventionally, large safety margins are required to compensate for organ movement, potentially increasing toxicity. Lately, daily high-quality cone beam CT (CBCT)-guided adaptive radiotherapy, aided by artificial intelligence (AI), became clinically available. Thus, online treatment plans can be adapted to the current position of the tumor and the adjacent organs at risk (OAR), while the patient is lying on the treatment couch. We sought to evaluate the potential of this new technology, including a weekly shuttle-based 3T-MRI scan in various treatment positions for tumor evaluation and for decreasing treatment-related side effects. (2) Methods: This is a prospective one-armed phase-II trial consisting of 40 patients with cervical carcinoma (FIGO IB-IIIC1) with an age ≥ 18 years and a Karnofsky performance score ≥ 70%. EBRT (45-50.4 Gy in 25-28 fractions with 55.0-58.8 Gy simultaneous integrated boosts to lymph node metastases) will be accompanied by weekly shuttle-based MRIs. Concurrent platinum-based chemotherapy will be given, followed by 28 Gy of BT (four fractions). The primary endpoint will be the occurrence of overall early bowel and bladder toxicity CTCAE grade 2 or higher (CTCAE v5.0). Secondary outcomes include clinical feasibility, quality of life, and imaging-based response assessment.
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Affiliation(s)
- Fabian Weykamp
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Eva Meixner
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
| | - Nathalie Arians
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
| | - Philipp Hoegen-Saßmannshausen
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Ji-Young Kim
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
| | - Bouchra Tawk
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Division of Molecular and Translational Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Maximilian Knoll
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Division of Molecular and Translational Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Peter Huber
- Clinical Cooperation Unit Molecular Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Laila König
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
| | - Anja Sander
- Institute of Medical Biometry, University of Heidelberg, 69120 Heidelberg, Germany
| | - Theresa Mokry
- Department of Radiology, Heidelberg University Hospital, 69120 Heidelberg, Germany
- Department of Radiology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Clara Meinzer
- Department of Radiology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Heinz-Peter Schlemmer
- Department of Radiology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Oliver Jäkel
- Division of Medical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Jürgen Debus
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Heidelberg Ion-Beam Therapy Center (HIT), Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany
- German Cancer Consortium (DKTK), Partner Site, 69120 Heidelberg, Germany
| | - Juliane Hörner-Rieber
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany (J.H.-R.)
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
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10
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Bacorro W, Olonan BN, Co HC, Fineza-Dela Cruz AM. Challenges and opportunities in the implementation of advanced brachytherapy programs for cervical cancer in the Philippines. Asia Pac J Clin Oncol 2024; 20:3-6. [PMID: 37743655 DOI: 10.1111/ajco.14012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/19/2023] [Accepted: 09/12/2023] [Indexed: 09/26/2023]
Abstract
Cervical cancer is the second most common cancer cause of morbidity and mortality in Filipino women; the age-standardized annual incidence is 15.2 as of March 2023. The majority are diagnosed at a locally advanced stage and in the reproductive and working age group. This results in important treatment and productivity costs. The importance of image-guided and interstitial brachytherapy (BRT) in local control and toxicity outcomes has been shown in recent meta-analyses. We review the status of advanced BRT program training and implementation in the Philippines and important challenges and opportunities to move forward.
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Affiliation(s)
- Warren Bacorro
- Department of Radiation Oncology, University of Santo Tomas Hospital - Benavides Cancer Institute, Manila, Philippines
- Faculty of Medicine and Surgery, University of Santo Tomas, Manila, Philippines
| | | | - Henri Cartier Co
- Department of Radiation Oncology, University of the Philippines - Philippine General Hospital, Manila, Philippines
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11
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Liu S, Jones E. Clinical implementation of failure modes and effects analysis for gynecological high-dose-rate brachytherapy. J Contemp Brachytherapy 2024; 16:35-47. [PMID: 38584884 PMCID: PMC10993892 DOI: 10.5114/jcb.2024.136295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 02/05/2024] [Indexed: 04/09/2024] Open
Abstract
Purpose To use failure modes and effects analysis (FMEA) to identify failure modes for gynecological high-dose-rate (HDR) brachytherapy pathway and score with severity, occurrence, and detectability. Material and methods A research team was organized to observe gynecological HDR brachytherapy pathway, and draw detailed process map to identify all potential failure modes (FMs). The whole team scored FMs based on three parameters, including occurrence (O), detectability (D), and severity (S), and then multiplied three scores to obtain risk priority number (RPN). All FMs were ranked according to RPNs and/or severity scores, and FMs with the highest RPN scores (> 100) and severity scores (> 8) were selected for in-depth analysis. Fault tree analysis (FTA) was applied to find progenitor causes of high-risk FMs and their propagation path, and determine which steps in the process need to be changed and optimized. Efficiency of each existing preventive methods to detect and stop FMs was analyzed, and proposals to improve quality management (QM) and ensure patient safety were suggested. Results The whole gynecological HDR brachytherapy pathway consisted of 5 sub-processes and 30 specific steps, in which 57 FMs were identified. Twelve high-risk FMs were found, including 7 FMs with RPNs > 100 and 5 FMs with severity scores > 8. For these FMs, 2 were in the insertion stage, 1 in the imaging stage, 4 in the treatment planning stage, and 5 in the final stage of treatment delivery. The most serious of these FMs was the change in organ at risk (OAR) during treatment delivery (RPN = 245.7). The FM that occurred most frequently was the applicator shift during patient transfer. Conclusions Failure modes and effects analysis is a prospective risk-based tool that can identity high-risk steps before failures occur, provide preventive measures to stop their occurrence, and improve quality management system.
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Affiliation(s)
- Siyao Liu
- Department of Medical Engineering, Peking Union Medical College Hospital, Beijing, China
| | - Emma Jones
- Radiotherapy Physics and Engineering, Department of Medical Physics, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
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12
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Barten DLJ, van Kesteren Z, Laan JJ, Dassen MG, Westerveld GH, Pieters BR, de Jonge CS, Stoker J, Bel A. Precision assessment of bowel motion quantification using 3D cine-MRI for radiotherapy. Phys Med Biol 2024; 69:04NT01. [PMID: 38232395 DOI: 10.1088/1361-6560/ad1f89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 01/17/2024] [Indexed: 01/19/2024]
Abstract
Objective. The bowel is an important organ at risk for toxicity during pelvic and abdominal radiotherapy. Identifying regions of high and low bowel motion with MRI during radiotherapy may help to understand the development of bowel toxicity, but the acquisition time of MRI is rather long. The aim of this study is to retrospectively evaluate the precision of bowel motion quantification and to estimate the minimum MRI acquisition time.Approach. We included 22 gynaecologic cancer patients receiving definitive radiotherapy with curative intent. The 10 min pre-treatment 3D cine-MRI scan consisted of 160 dynamics with an acquisition time of 3.7 s per volume. Deformable registration of consecutive images generated 159 deformation vector fields (DVFs). We defined two motion metrics, the 50th percentile vector lengths (VL50) of the complete set of DVFs was used to measure median bowel motion. The 95th percentile vector lengths (VL95) was used to quantify high motion of the bowel. The precision of these metrics was assessed by calculating their variation (interquartile range) in three different time frames, defined as subsets of 40, 80, and 120 consecutive images, corresponding to acquisition times of 2.5, 5.0, and 7.5 min, respectively.Main results. For the full 10 min scan, the minimum motion per frame of 50% of the bowel volume (M50%) ranged from 0.6-3.5 mm for the VL50 motion metric and 2.3-9.0 mm for the VL95 motion metric, across all patients. At 7.5 min scan time, the variation in M50% was less than 0.5 mm in 100% (VL50) and 95% (VL95) of the subsets. A scan time of 5.0 and 2.5 min achieved a variation within 0.5 mm in 95.2%/81% and 85.7%/57.1% of the subsets, respectively.Significance. Our 3D cine-MRI technique quantifies bowel loop motion with 95%-100% confidence with a precision of 0.5 mm variation or less, using a 7.5 min scan time.
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Affiliation(s)
- D L J Barten
- Amsterdam UMC location University of Amsterdam, Department of Radiation Oncology, Meibergdreef 9, 1105 AZAmsterdam, The Netherlands
| | - Z van Kesteren
- Amsterdam UMC location University of Amsterdam, Department of Radiation Oncology, Meibergdreef 9, 1105 AZAmsterdam, The Netherlands
| | - J J Laan
- Amsterdam UMC location University of Amsterdam, Department of Radiation Oncology, Meibergdreef 9, 1105 AZAmsterdam, The Netherlands
| | - M G Dassen
- Amsterdam UMC location University of Amsterdam, Department of Radiation Oncology, Meibergdreef 9, 1105 AZAmsterdam, The Netherlands
- Department of Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - G H Westerveld
- Amsterdam UMC location University of Amsterdam, Department of Radiation Oncology, Meibergdreef 9, 1105 AZAmsterdam, The Netherlands
- Erasmus MC Cancer Institute, Erasmus University Medical Center, Department of Radiation Oncology, Rotterdam, The Netherlands
| | - B R Pieters
- Amsterdam UMC location University of Amsterdam, Department of Radiation Oncology, Meibergdreef 9, 1105 AZAmsterdam, The Netherlands
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
| | - C S de Jonge
- Amsterdam UMC location University of Amsterdam, Department of Radiology and Nuclear Medicine, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - J Stoker
- Amsterdam UMC location University of Amsterdam, Department of Radiology and Nuclear Medicine, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - A Bel
- Amsterdam UMC location University of Amsterdam, Department of Radiation Oncology, Meibergdreef 9, 1105 AZAmsterdam, The Netherlands
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13
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Massock W, Kim Y, Dresner MA, Sun W, Caster J, Adams Q, Jespersen J, St-Aubin J. MRI-Guided High-Dose-Rate Gynecologic Brachytherapy Using an MR-Linac as an MR Simulator: A Single Institutional Experience. Pract Radiat Oncol 2024; 14:70-79. [PMID: 37652344 DOI: 10.1016/j.prro.2023.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 07/07/2023] [Accepted: 08/19/2023] [Indexed: 09/02/2023]
Abstract
PURPOSE The goal of this study was to commission the use of a magnetic resonance linear accelerator (MR-linac; Unity) for imaging of gynecologic high-dose-rate (HDR) brachytherapy. This included optimizing imaging protocols and workflow development. METHODS AND MATERIALS T1-weighted and T2-weighted HDR imaging protocols were optimized on the Unity for HDR gynecologic imaging and treatment planning. Phantom measurements using these protocols were performed to determine geometric distortion and to assess reconstruction accuracy of the applicator compared with the ground truth computed tomography image. A treatment plan was created within the treatment planning system that was then delivered to a phantom. New workflows were developed which were tested with a full dry run with a healthy volunteer including patient transfer, anesthesia considerations, and data transfer. Validation of the workflow was completed on 1 patient who received imaging on both the Unity magnetic resonance imaging (MRI) and on a dedicated 3 Tesla MRI simulator. RESULTS Imaging analysis results were favorable with MR-linac images with a maximum distortion of 0.96 mm and a 1.36-mm over a 350-mm diameter spherical volume on the T1- and T2-weighted images, respectively, and the maximum effect of the applicator was 0.36 ppm of the main magnetic field. Reconstruction uncertainties of the Venezia applicator's tandem and 2 lunar-ovoids on the MR-linac images were within the 2-mm tolerance of the International Commission on Radiation Units and Measurements Report 89. Treatment planning and delivery was performed on the MR-HDR quality assurance phantom without issue. Dry run and healthy volunteer imaging showed adequate performance of both vital monitoring and HDR equipment. For the patient for which both the Unity MRI and 3 Tesla images were acquired, 95.78% and 95.80% of the high risk clinical target volume received 100% of the dose, respectively. Both plans were considered clinically acceptable. CONCLUSIONS Unity MR-linac images were successfully used in gynecologic HDR brachytherapy treatment planning, and a usable workflow was established.
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Affiliation(s)
- Whitney Massock
- Department of Radiation Oncology, University of Iowa, Iowa City, Iowa
| | - Yusung Kim
- Department of Radiation Physics, MD Anderson Cancer Center, Houston, Texas
| | | | - Wenqing Sun
- Department of Radiation Oncology, University of Iowa, Iowa City, Iowa
| | - Joseph Caster
- Department of Radiation Oncology, University of Iowa, Iowa City, Iowa
| | - Quentin Adams
- Department of Radiation Oncology, University of Iowa, Iowa City, Iowa
| | - Jill Jespersen
- Department of Radiation Oncology, University of Iowa, Iowa City, Iowa
| | - Joel St-Aubin
- Department of Radiation Oncology, University of Iowa, Iowa City, Iowa.
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14
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Dincer N, Ugurluer G, Mustafayev TZ, Serkizyan A, Aydin G, Güngör G, Yapici B, Atalar B, Özyar E. Dosimetric comparison of stereotactic MR-guided radiation therapy (SMART) and HDR brachytherapy boost in cervical cancer. Brachytherapy 2024; 23:18-24. [PMID: 38000958 DOI: 10.1016/j.brachy.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/21/2023] [Accepted: 09/10/2023] [Indexed: 11/26/2023]
Abstract
PURPOSE The standard of care in locally advanced cervical cancer (LACC) is concomitant chemoradiotherapy followed by high-dose-rate brachytherapy (HDR-BT). Although previous studies compared HDR-BT with stereotactic body radiotherapy (SBRT), there is scarce data regarding the dosimetric outcomes of stereotactic MR-guided adaptive radiation therapy (SMART) boost in lieu of HDR-BT. METHODS AND MATERIALS In this single-institutional in-silico comparative study, LACC patients who were definitively treated with external beam radiotherapy followed by HDR-BT were selected. Target volumes and organs at risk (OARs) were delineated in MRI and HDR-planning CT. An HDR-BT and a SMART boost plan were generated with a prescribed dose of 28 Gy in four fractions for all patients. The HDR-BT and SMART boost plans were compared in regard to target coverage as well OARs doses. RESULTS Mean EQD2 D90 to HR-CTV and IR-CTV for HDR-BT plans were 89.7 and 70.5 Gy, respectively. For SMART, the mean EQD2 D90 to HR-PTV, HR-CTV, and IR-CTV were 82.9, 95.4, and 70.2 Gy, respectively. The mean D2cc EQD2 of bladder, rectum, and sigmoid colon for HDR-BT plans were 86.4, 70.7, and 65.7 Gy, respectively. The mean D2cc EQD2 of bladder, rectum, and sigmoid colon for SMART plans were 81.4, 70.8, and 73.6 Gy, respectively. All dose constraints in terms of target coverage and OARs constraints were met for both HDR-BT and SMART plans. CONCLUSIONS This dosimetric study demonstrates that SMART can be applied in cases where HDR-BT is not available or ineligible with acceptable target coverage and OAR sparing. However, prospective clinical studies are needed to validate these results.
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Affiliation(s)
- Neris Dincer
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Gamze Ugurluer
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | | | - Anatolia Serkizyan
- Department of Radiation Oncology, Acibadem Maslak Hospital, Istanbul, Turkey
| | - Gokhan Aydin
- Department of Radiation Oncology, Acibadem Maslak Hospital, Istanbul, Turkey
| | - Görkem Güngör
- Department of Radiation Oncology, Acibadem Maslak Hospital, Istanbul, Turkey
| | - Bulent Yapici
- Department of Radiation Oncology, Acibadem Maslak Hospital, Istanbul, Turkey
| | - Banu Atalar
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Enis Özyar
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey.
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15
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Raffa S, Lanfranchi F, Satragno C, Giannelli F, Marcenaro M, Coco A, Cena SE, Sofia L, Marini C, Mammoliti S, Levaggi A, Tagliafico AS, Sambuceti G, Barra S, Morbelli S, Belgioia L, Bauckneht M. The prognostic value of FIGO staging defined by combining MRI and [ 18F]FDG PET/CT in patients with locally advanced cervical cancer. Curr Probl Cancer 2023; 47:101007. [PMID: 37684197 DOI: 10.1016/j.currproblcancer.2023.101007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/08/2023] [Accepted: 08/16/2023] [Indexed: 09/10/2023]
Abstract
The last version of the FIGO classification recommended imaging tools to complete the clinical assessment of patients with cervical cancer. However, the preferable imaging approach is still unclear. We aimed to explore the prognostic power of Magnetic Resonance Imaging (MRI), contrast-enhanced Computed Tomography (ceCT), and [18F]-Fluorodeoxyglucose Positron Emission Tomography ([18F]FDG-PET)/CT in patients staged for locally advanced cervical cancer (LACC, FIGO stages IB3-IVA). Thirty-six LACC patients (mean age 55.47 ± 14.01, range 31-82) were retrospectively enrolled. All of them underwent MRI, ceCT and [18F]FDG-PET/CT before receiving concurrent chemoradiotherapy. A median dose of 45 Gy (range 42-50.4; 25-28 fractions, 5 fractions per week, 1 per day) was delivered through the external-beam radiation therapy (EBRT) on the pelvic area, while a median dose of 57.5 Gy (range 16-61.1; 25-28 fractions, 5 fractions per week, 1 per day) was administered on metastatic nodes. The median doses for brachytherapy treatment were 28 Gy (range 28-30; 4-5 fractions, 1 every other day). Six cycles of cisplatin or carboplatin were administered weekly. The study endpoints were recurrence-free survival (RFS) and overall survival (OS). Metastatic pelvic lymph nodes at MRI independently predicted RFS (HR 13.271, 95% CI 1.730-101.805; P = 0.027), while metastatic paraaortic lymph nodes at [18F]FDG-PET/CT independently predicted both RFS (HR 11.734, 95% CI 3.200-43.026; P = .005) and OS (HR 13.799, 95% CI 3.378-56.361; P < 0.001). MRI and [18F]FDG-PET/CT findings were incorporated with clinical evidences into the FIGO classification. With respect to the combination of clinical, MRI and ceCT data, the use of next-generation imaging (NGI) determined a stage migration in 10/36 (27.7%) of patients. Different NGI-based FIGO classes showed remarkably different median RFS (stage IIB: not reached; stage IIIC1: 44 months; stage IIIC2: 3 months; P < 0.001) and OS (stage IIB: not reached; stage IIIC1: not reached; stage IIIC2: 14 months; P < 0.001). A FIGO classification based on the combination of MRI and [18F]FDG-PET/CT might predict RFS and OS of LACC patients treated with concurrent chemoradiotherapy.
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Affiliation(s)
- Stefano Raffa
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | | | - Camilla Satragno
- Department of Experimental Medicine (DIMES), University of Genoa, Genova, Italy
| | - Flavio Giannelli
- Radiation Oncology, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Michela Marcenaro
- Radiation Oncology, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Angela Coco
- Department of Health Sciences (DISSAL), University of Genoa, Genova, Italy
| | | | - Luca Sofia
- Department of Health Sciences (DISSAL), University of Genoa, Genova, Italy
| | - Cecilia Marini
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Genova, Italy; CNR, Institute of Molecular Bioimaging and Physiology (IBFM), Milano, Italy
| | - Serafina Mammoliti
- Medical Oncology Unit 1, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Alessia Levaggi
- Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Alberto Stefano Tagliafico
- Department of Health Sciences (DISSAL), University of Genoa, Genova, Italy.; Radiologic Unit, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Gianmario Sambuceti
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Health Sciences (DISSAL), University of Genoa, Genova, Italy
| | - Salvina Barra
- Radiation Oncology, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Silvia Morbelli
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Health Sciences (DISSAL), University of Genoa, Genova, Italy
| | - Liliana Belgioia
- Department of Health Sciences (DISSAL), University of Genoa, Genova, Italy.; Radiation Oncology, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Matteo Bauckneht
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Health Sciences (DISSAL), University of Genoa, Genova, Italy..
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16
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Hickey S, Reichert A, Ptacek W, Bielak L, Reiss S, Fischer J, Gunashekar DD, Bortfeld T, Bock M. Simultaneous T 2 -weighted real-time MRI of two orthogonal slices. Magn Reson Med 2023; 90:2388-2399. [PMID: 37427459 DOI: 10.1002/mrm.29795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 07/11/2023]
Abstract
PURPOSE MR guidance is used during therapy to detect and compensate for lesion motion. T2 -weighted MRI often has a superior lesion contrast in comparison to T1 -weighted real-time imaging. The purpose of this work was to design a fast T2 -weighted sequence capable of simultaneously acquiring two orthogonal slices, enabling real-time tracking of lesions. METHODS To generate a T2 contrast in two orthogonal slices simultaneously, a sequence (Ortho-SFFP-Echo) was designed that samples the T2 -weighted spin echo (S- ) signal in a TR-interleaved acquisition of two slices. Slice selection and phase-encoding directions are swapped between the slices, leading to a unique set of spin-echo signal conditions. To minimize motion-related signal dephasing, additional flow-compensation strategies are implemented. In both the abdominal breathing phantom and in vivo experiments, a time series was acquired using Ortho-SSFP-Echo. The centroid of the target was tracked in postprocessing steps. RESULTS In the phantom, the lesion could be identified and delineated in the dynamic images. In the volunteer experiments, the kidney was visualized with a T2 contrast at a temporal resolution of 0.45 s under free-breathing conditions. A respiratory belt demonstrated a strong correlation with the time course of the kidney centroid in the head-foot direction. A hypointense saturation band at the slice overlap did not inhibit lesion tracking in the semi-automatic postprocessing steps. CONCLUSION The Ortho-SFFP-Echo sequence delivers real-time images with a T2 -weighted contrast in two orthogonal slices. The sequence allows for simultaneous acquisition, which could be beneficial for real-time motion tracking in radiotherapy or interventional MRI.
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Affiliation(s)
- Samantha Hickey
- Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Andreas Reichert
- Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | | | - Lars Bielak
- Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, Freiburg, Germany
| | - Simon Reiss
- Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Johannes Fischer
- Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Deepa Darshini Gunashekar
- Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thomas Bortfeld
- Division of Radiation Biophysics, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Michael Bock
- Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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17
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Kanani A, Fatemi-Ardakani A, Owrangi AM, Yazdi M, Baghbani H, Mosleh-Shirazi MA. Quantification of Artifacts and Image Distortions in 1.5 Tesla Magnetic Resonance Images of a Commercial Multi-Channel Vaginal Cylinder Brachytherapy Applicator Set. J Biomed Phys Eng 2023; 13:523-534. [PMID: 38148963 PMCID: PMC10749412 DOI: 10.31661/jbpe.v0i0.2309-1665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 10/08/2023] [Indexed: 12/28/2023]
Abstract
Background The BEBIG Portio multi-channel applicator provides better target dose coverage and sparing organs-at-risk compared to a single-channel cylinder. However, artifacts and distortions of Portio in magnetic resonance images (MRI) have not yet been reported. Objective We aimed to quantify the artifacts and distortions in its 1.5-Tesla MR images before clinical use. Material and Methods In this experimental study, we employed a gelatin-filled phantom to conduct our measurements. T2-weighted (T2W) images were examined for artifacts and distortions. Computed tomography (CT) images were used as a reference to assess image distortions. Artifact severity was measured by recording the full-width-at-half-maximum (FWHM) image pixel values at various positions along the length of the applicator/channels. CT and MRI-based applicator reconstruction accuracy were then compared, and signal-to-noise ratio (SNR) and contrast were also determined for the applicator images. Results The applicator distortion level for the Portio applicator was less than the image spatial resolution (0.5±0.5 pixels). The average FWHM for the tandem applicator images was 5.23±0.39 mm, while it was 3.21±0.37 mm for all channels (compared to their actual diameters of 5.0 mm and 3.0 mm, respectively). The average applicator reconstruction difference between CT and MR images was 0.75±0.30 mm overall source dwell positions. The image SNR and contrast were both acceptable. Conclusion These findings indicate that the Portio applicator has a satisfactory low level of artifacts and image distortions in 1.5-Tesla, T2W images. It may, therefore, be a promising option for MRI-guided multi-channel vaginal brachytherapy.
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Affiliation(s)
- Abolfazl Kanani
- Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Fatemi-Ardakani
- Department of Physics, Jackson State University (JSU), Jackson, Mississippi, USA
- SpinTecx, Jackson, Mississippi, USA
- Department of Radiation Oncology, Community Health Systems (CHS) Cancer Network, Jackson, Mississippi, USA
| | - Amir M Owrangi
- Department of Radiation Oncology, UT Southwestern Medical Center, 2280 Inwood Rd, EC2.242, Dallas, TX 75235, USA
| | - Mehran Yazdi
- Signal and Image Processing Lab (SIPL), School of Electrical and Computer Eng, Shiraz University, Shiraz, Iran
| | - Hadi Baghbani
- Department of Radiology, Namazi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Amin Mosleh-Shirazi
- Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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18
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Zhong J, Kobus M, Maitre P, Datta A, Eccles C, Dubec M, McHugh D, Buckley D, Scarsbrook A, Hoskin P, Henry A, Choudhury A. MRI-guided Pelvic Radiation Therapy: A Primer for Radiologists. Radiographics 2023; 43:e230052. [PMID: 37796729 DOI: 10.1148/rg.230052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Radiation therapy (RT) is a core pillar of oncologic treatment, and half of all patients with cancer receive this therapy as a curative or palliative treatment. The recent integration of MRI into the RT workflow has led to the advent of MRI-guided RT (MRIgRT). Using MRI rather than CT has clear advantages for guiding RT to pelvic tumors, including superior soft-tissue contrast, improved organ motion visualization, and the potential to image tumor phenotypic characteristics to identify the most aggressive or treatment-resistant areas, which can be targeted with a more focal higher radiation dose. Radiologists should be familiar with the potential uses of MRI in planning pelvic RT; the various RT techniques used, such as brachytherapy and external beam RT; and the impact of MRIgRT on treatment paradigms. Current clinical experience with and the evidence base for MRIgRT in the settings of prostate, cervical, and bladder cancer are discussed, and examples of treated cases are illustrated. In addition, the benefits of MRIgRT, such as real-time online adaptation of RT (during treatment) and interfraction and/or intrafraction adaptation to organ motion, as well as how MRIgRT can decrease toxic effects and improve oncologic outcomes, are highlighted. MRIgRT is particularly beneficial for treating mobile pelvic structures, and real-time adaptive RT for tumors can be achieved by using advanced MRI-guided linear accelerator systems to spare organs at risk. Future opportunities for development of biologically driven adapted RT with use of functional MRI sequences and radiogenomic approaches also are outlined. ©RSNA, 2023 Quiz questions for this article are available in the supplemental material.
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Affiliation(s)
- Jim Zhong
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Marta Kobus
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Priyamvada Maitre
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Anubhav Datta
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Cynthia Eccles
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Michael Dubec
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Damien McHugh
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - David Buckley
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Andrew Scarsbrook
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Peter Hoskin
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Ann Henry
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
| | - Ananya Choudhury
- From the Leeds Institute of Medical Research (J.Z., A.S., A.H.) and Department of Biomedical Imaging (D.B.), University of Leeds, 6 Clarendon Way, Woodhouse, Leeds LS2 9LH, England; Leeds Cancer Centre, St James's University Hospital, Leeds, England (J.Z., A.S., A.H.); Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany (M.K.); Radiation Therapy Research Group (M.K., P.M., A.D., C.E., M.D., P.H., A.C.) and Division of Cancer Sciences (D.M.), University of Manchester, Manchester, England; and The Christie NHS Foundation Trust, Manchester, England (P.M., C.E., M.D., D.M., P.H., A.C.)
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19
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Jacobsen MC, Rigaud B, Simiele SJ, Rauch GM, Ning MS, Vedam S, Klopp AH, Stafford RJ, Brock KK, Venkatesan AM. Feasibility of quantitative diffusion-weighted imaging during intra-procedural MRI-guided brachytherapy of locally advanced cervical and vaginal cancers. Brachytherapy 2023; 22:736-745. [PMID: 37612174 DOI: 10.1016/j.brachy.2023.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 05/30/2023] [Accepted: 06/15/2023] [Indexed: 08/25/2023]
Abstract
PURPOSE To determine the feasibility of quantitative apparent diffusion coefficient (ADC) acquisition during magnetic resonance imaging-guided brachytherapy (MRgBT) using reduced field-of-view (rFOV) diffusion-weighted imaging (DWI). METHODS AND MATERIALS T2-weighted (T2w) MR and full-FOV single-shot echo planar (ssEPI) DWI were acquired in 7 patients with cervical or vaginal malignancy at baseline and prior to brachytherapy, while rFOV-DWI was acquired during MRgBT following brachytherapy applicator placement. The gross target volume (GTV) was contoured on the T2w images and registered to the ADC map. Voxels at the GTV's maximum Maurer distance comprised a central sub-volume (GTVcenter). Contour ADC mean and standard deviation were compared between timepoints using repeated measures ANOVA. RESULTS ssEPI-DWI mean ADC increased between baseline and prebrachytherapy from 1.03 ± 0.18 10-3 mm2/s to 1.34 ± 0.28 10-3 mm2/s for the GTV (p = 0.06) and from 0.84 ± 0.13 10-3 mm2/s to 1.26 ± 0.25 10-3 mm2/s at the level of the GTVcenter (p = 0.03), consistent with early treatment response. rFOV-DWI during MRgBT demonstrated mean ADC values of 1.28 ± 0.14 10-3 mm2/s and 1.28 ± 0.19 10-3 mm2/s for the GTV and GTVcenter, respectively (p = 0.02 and p = 0.03 relative to baseline). No significant differences were observed between ssEPI-DWI and rFOV-DWI ADC measurements. CONCLUSIONS Quantitative ADC measurement in the setting of MRI guided brachytherapy implant placement for cervical and vaginal cancers is feasible using rFOV-DWI, with comparable mean ADC comparable to prebrachytherapy ssEPI-DWI, and may enable MRI-guided radiotherapy targeting of low ADC, radiation resistant sub-volumes of tumor.
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Affiliation(s)
- Megan C Jacobsen
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX.
| | - Bastien Rigaud
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Samantha J Simiele
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Gaiane M Rauch
- Department of Abdominal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Matthew S Ning
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Sastry Vedam
- University of Maryland, Department of Radiation Oncology, Baltimore, MD
| | - Ann H Klopp
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - R Jason Stafford
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Kristy K Brock
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Aradhana M Venkatesan
- Department of Abdominal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX.
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20
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Grover S, Lichter KE, Likhacheva A, Jang JW, Ning MS, Robin TP, Small W, Kudchadker RJ, Swamidas J, Chopra S, Rai B, Sharma SD, Sharma DN, Kuppusamy T, Yang R, Berger D, Mendez LC, Glaser S, Erickson DL, Chino J, Mourtada F, Abdel-Wahab M, Jhingran A, Simonds H, Mahantshetty U. The American Brachytherapy Society and Indian Brachytherapy Society consensus statement for the establishment of high-dose-rate brachytherapy programs for gynecological malignancies in low- and middle-income countries. Brachytherapy 2023; 22:716-727. [PMID: 37704540 DOI: 10.1016/j.brachy.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/17/2023] [Accepted: 07/03/2023] [Indexed: 09/15/2023]
Abstract
PURPOSE The global cervical cancer burden is disproportionately high in low- and middle-income countries (LMICs), and outcomes can be governed by the accessibility of appropriate screening and treatment. High-dose-rate (HDR) brachytherapy plays a central role in cervical cancer treatment, improving local control and overall survival. The American Brachytherapy Society (ABS) and Indian Brachytherapy Society (IBS) collaborated to provide this succinct consensus statement guiding the establishment of brachytherapy programs for gynecological malignancies in resource-limited settings. METHODS AND MATERIALS ABS and IBS members with expertise in brachytherapy formulated this consensus statement based on their collective clinical experience in LMICs with varying levels of resources. RESULTS The ABS and IBS strongly encourage the establishment of HDR brachytherapy programs for the treatment of gynecological malignancies. With the consideration of resource variability in LMICs, we present 15 minimum component requirements for the establishment of such programs. Guidance on these components, including discussion of what is considered to be essential and what is considered to be optimal, is provided. CONCLUSIONS This ABS/IBS consensus statement can guide the successful and safe establishment of HDR brachytherapy programs for gynecological malignancies in LMICs with varying levels of resources.
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Affiliation(s)
- Surbhi Grover
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA.
| | - Katie E Lichter
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
| | - Anna Likhacheva
- Department of Radiation Oncology, Sutter Health Sacramento, Sacramento, CA
| | - Joanne W Jang
- Department of Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Matthew S Ning
- Division of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX
| | - Tyler P Robin
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, CO
| | - William Small
- Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernadin Cancer Center, Loyola University Chicago, Maywood, IL
| | - Rajat J Kudchadker
- Division of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jamema Swamidas
- Department of Radiation Oncology, Tata Memorial Centre, Mumbai, Maharashtra, India
| | - Supriya Chopra
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Bhavana Rai
- Department of Radiation Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sunil Dutt Sharma
- Department of Radiation Oncology, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India
| | - Daya N Sharma
- Department of Radiation Oncology, Department of Radiation Oncology, National Cancer Institute, AIIMS, New Delhi, India
| | - Thayalan Kuppusamy
- Department of Radiation Oncology, Dr Kamakshi Memorial Hospital, Chennai, Tamil Nadu, India
| | - Ruijie Yang
- Department of Radiation Oncology, Cancer Center, Peking University Third Hospital, Beijing, China
| | - Daniel Berger
- Department of Nuclear Sciences and Division of Human Health, Section of Dosimetry and Medical Radiation Physics, International Atomic Energy Agency, Vienna, Austria
| | - Lisbeth Cordero Mendez
- Division of Human Health, Applied Radiation Biology and Radiotherapy Section, International Atomic Energy Agency, Vienna, Austria
| | - Scott Glaser
- Department of Radiation Oncology, City of Hope Comprehensive Cancer Center, Duarte, CA
| | - Delnora L Erickson
- Department of Radiation Oncology, Walter Reed National Military Center, Uniformed Services University of the Health Sciences, Bethesda, MD
| | - Junzo Chino
- Deptartment of Radiation Oncology, Duke Cancer Center, Durham, NC
| | - Firas Mourtada
- Department of Radiation Oncology, Helen F. Graham Cancer Center and Research Institute, Christiana Care Health System, Sidney Kimmel Cancer Center, Newark, DE
| | - May Abdel-Wahab
- Department of Nuclear Sciences and Division of Human Health, Section of Applied Radiation Biology and Radiotherapy, International Atomic Energy Agency, Vienna, Austria
| | - Anuja Jhingran
- Division of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX
| | - Hannah Simonds
- Department of Radiation Oncology, Stellenbosch University, Stellenbosch, South Africa
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21
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Small C, Prior P, Nasief H, Zeitlin R, Saeed H, Paulson E, Morrow N, Rownd J, Erickson B, Bedi M. A general framework to develop a radiomic fingerprint for progression-free survival in cervical cancer. Brachytherapy 2023; 22:728-735. [PMID: 37574352 DOI: 10.1016/j.brachy.2023.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/11/2023] [Accepted: 06/06/2023] [Indexed: 08/15/2023]
Abstract
PURPOSE Treatment of locally advanced cervical cancer patients includes chemoradiation followed by brachytherapy. Our aim is to develop a delta radiomics (DRF) model from MRI-based brachytherapy treatment and assess its association with progression free survival (PFS). MATERIALS AND METHODS A retrospective analysis of FIGO stage IB- IV cervical cancer patients between 2012 and 2018 who were treated with definitive chemoradiation followed by MRI-based intracavitary brachytherapy was performed. Clinical factors together with 18 radiomic features extracted from different radiomics matrices were analyzed. The delta radiomic features (DRFs) were extracted from MRI on the first and last brachytherapy fractions. Support Vector Machine (SVM) models were fitted to combinations of 2-3 DRFs found significant after Spearman correlation and Wilcoxon rank sum test statistics. Additional models were tested that included clinical factors together with DRFs. RESULTS A total of 39 patients were included in the analysis with a median patient age of 52 years. Progression occurred in 20% of patients (8/39). The significant DRFs using two DRF feature combinations was a model using auto correlation (AC) and sum variance (SV). The best performing three feature model combined mean, AC & SV. Additionally, the inclusion of FIGO stages with the 2- and 3 DRF combination model(s) improved performance compared to models with only DRFs. However, all the clinical factor + DRF models were not significantly different from one another (all AUCs were 0.77). CONCLUSIONS Our study shows promising evidence that radiomics metrics are associated with progression free survival in cervical cancer.
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Affiliation(s)
- Christina Small
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI.
| | - Phillip Prior
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI
| | - Haidy Nasief
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI
| | - Ross Zeitlin
- Department of Radiation Oncology, John H Stroger, Jr. Hospital of Cook County, Chicago, IL
| | - Hina Saeed
- Department of Radiation Oncology, Lynn Cancer Institute, Baptist Health South Florida, Boynton Beach, FL
| | - Eric Paulson
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI
| | - Natalya Morrow
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI
| | - Jason Rownd
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI
| | - Beth Erickson
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI
| | - Meena Bedi
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI
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22
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Augurio A, Macchia G, Caravatta L, Lucarelli M, Di Gugliemo F, Vinciguerra A, Seccia B, De Sanctis V, Autorino R, Delle Curti C, Meregalli S, Perrucci E, Raspanti D, Cerrotta A. Contouring of emerging organs-at-risk (OARS) of the female pelvis and interobserver variability: A study by the Italian association of radiotherapy and clinical oncology (AIRO). Clin Transl Radiat Oncol 2023; 43:100688. [PMID: 37854671 PMCID: PMC10579954 DOI: 10.1016/j.ctro.2023.100688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/30/2023] [Accepted: 10/05/2023] [Indexed: 10/20/2023] Open
Abstract
Purpose To provide straightforward instructions for daily practice in delineating emerging organs-at-risk (OARs) of the female pelvis and to discuss the interobserver variability in a two-step multicenter study. Methods and materials A contouring atlas with anatomical boundaries for each emerging OAR was realized by radiation oncologists and radiologists who are experts in pelvic imaging, as per their knowledge and clinical practice. These contours were identified as quality benchmarks for the analysis subsequently carried out. Radiation oncologists not involved in setting the custom-built contouring atlas and interested in the treatment of gynecological cancer were invited to participate in this 2-step trial. In the first step all participants were supplied with a selected clinical case of locally advanced cervical cancer and had to identify emerging OARs (Levator ani muscle; Puborectalis muscle; Internal anal sphincter; External anal sphincter; Bladder base and trigone; Bladder neck; Iliac Bone Marrow; Lower Pelvis Bone Marrow; Lumbosacral Bone Marrow) based on their own personal knowledge of pelvic anatomy and experience. The suggested OARs and the contouring process were then presented at a subsequent webinar meeting with a contouring laboratory. Finally, in the second step, after the webinar meeting, each participant who had joined the study but was not involved in setting the benchmark received the custom-built contouring atlas with anatomical boundaries and was requested to delineate again the OARs using the tool provided. The Dice Similarity Coefficient (DSC) and the Jaccard Similarity Coefficient (JSC) were used to evaluate the spatial overlap accuracy of the different volume delineations and compared with the benchmark; the Hausdorff distance (HD) and the mean distance to agreement (MDA) to explore the distance between contours. All the results were reported as sample mean and standard deviation (SD). Results Fifteen radiation oncologists from different Institutions joined the study. The participants had a high agreement degree for pelvic bones sub-structures delineation according to DICE (IBM: 0.9 ± 0.02; LPBM: 0.91 ± 0.01). A moderate degree according to DICE was showed for ovaries (Right: 0.61 ± 0.16, Left: 0.72 ± 0.05), vagina (0.575 ± 0.13), bladder sub-structures (0.515 ± 0.08) and EAS (0.605 ± 0.05), whereas a low degree for the other sub-structures of the anal-rectal sphincter complex (LAM: 0.345 ± 0.07, PRM: 0.41 ± 0.10, and IAS: 0.4 ± 0.07). Conclusion This study found a moderate to low level of agreement in the delineation of the female pelvis emerging OARs, with a high degree of variability among observers. The development of delineation tools should be encouraged to improve the routine contouring of these OARs and increase the quality and consistency of radiotherapy planning.
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Affiliation(s)
- A. Augurio
- Department of Radiation Oncology, SS. Annunziata Hospital, Via Dei Vestini, 66100 Chieti, Italy
| | - G. Macchia
- Radiation Oncology Unit, Gemelli Molise Hospital, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli, 1, 86100 Campobasso, Italy
| | - L. Caravatta
- Department of Radiation Oncology, SS. Annunziata Hospital, Via Dei Vestini, 66100 Chieti, Italy
| | - M. Lucarelli
- Department od Radiotion Oncology, SS Annunziata Hospital, "G. D'Annunzio" University, Via dei Vestini, 66100 Chieti, Italy
| | - F. Di Gugliemo
- Department od Radiotion Oncology, SS Annunziata Hospital, "G. D'Annunzio" University, Via dei Vestini, 66100 Chieti, Italy
| | - A. Vinciguerra
- Department of Radiation Oncology, SS. Annunziata Hospital, Via Dei Vestini, 66100 Chieti, Italy
| | - B. Seccia
- Department of Neuroscience, Imaging and Clinical Sciences, “G. D’Annunzio” University, Via Luigi Polacchi 11, 66100 Chieti, Italy
| | - V. De Sanctis
- Radiotherapy Oncology, Department of Medicine and Surgery and Translational Medicine, Sapienza University of Rome, S. Andrea Hospital, Via di Grottarossa 1035, 00189 Rome, Italy
| | - R. Autorino
- Oncological Radiotherapy Unit, Department of Diagnostic Imaging, Oncological Radiotherapy and Hematology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Via Giuseppe Moscati, 31, 00168 Rome, Italy
| | - C. Delle Curti
- Radioterapia Oncologica, Fondazione IRCS, Istituto Nazionale dei Tumori di Milano, Via Giacomo Venezian, 1, 20133 Milano, Italy
| | - S. Meregalli
- Radiotherapy Unit, Azienda Ospedaliera San Gerardo, Via G. B. Pergolesi, 33, 20900 Monza, Italy
| | - E. Perrucci
- Radiation Oncology Section, Perugia General Hospital, Piazzale Giorgio Menghini, 3, 06129 Perugia, Italy
| | - D. Raspanti
- Temasinergie S.p.A., Via Marcello Malpighi 120, Faenza, Italy
| | - A. Cerrotta
- Radioterapia Oncologica, Fondazione IRCS, Istituto Nazionale dei Tumori di Milano, Via Giacomo Venezian, 1, 20133 Milano, Italy
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23
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Azak C, Kavak G, Ertan F, Alioğlu F, Akkaş EA, Göksel F, Karakaya E. The effect of lower urinary tract substructure doses on side effects of cervical cancer image-guided adaptive brachytherapy. J Cancer Res Ther 2023; 19:1825-1830. [PMID: 38376285 DOI: 10.4103/jcrt.jcrt_2353_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 01/29/2022] [Indexed: 02/21/2024]
Abstract
OBJECTIVE Image-Guided Adaptive Brachytherapy (IGABT) provides a survival advantage in locally advanced cervical cancer (LACC). Although side effects are seen less with this technique, dose parameters that cause urinary side effects are still questionable. We aim to investigate whether the radiotherapy doses of the lower urinary tract substructures (LUSS) affect the urinary system side effects (USSE) of cervical cancer external beam radiotherapy (EBRT) and the IGABT. METHODS LUSS (bladder, trigone, bladder neck, and urethra) doses were calculated in 40 patients diagnosed with LACC and receiving primary EBRT, IGABT, and concomitant chemotherapy. D0.1cc, D2cc, and D50% values were examined by contouring the bladder, trigone, bladder neck, and urethra from the intracavitary BT planning computed tomography (CT) images taken every 4 BT fractions, retrospectively. Besides, late USSE (urgency, dysuria (recurrent), frequency, obstruction, incontinence, hematuria, fistula, cystitis) were queried and categorized according to Common Toxicity Criteria for Adverse Events version 5.0. STATISTICAL ANALYSIS USED The Chi-square and Fisher's exact tests, Mann-Whitney U-test. RESULTS For the whole study population, for both incontinence and dysuria, trigone (D50%), urethra (D50%, D0.1cc,), and bladder neck (D50%, D0.1cc, D2cc) volume and hot spot doses remained significant. For cystitis, urethra (D50%, D0.1cc,) and bladder neck doses (D0.1cc, D50%, D2cc) are worth investigating. CONCLUSIONS Although USSE is less common in the intensity-modulated radiation therapy and IGABT era, it may be meaningful to take the doses of LUSS into account when planning IGABT. In addition, delineation of LUSS using only CT seems feasible. More proof is needed to determine delineation technique and dose constraints for LUSS for IGABT.
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Affiliation(s)
- Can Azak
- Department of Radiation Oncology, Dr. Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital, Ankara, Turkey
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24
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Jayarathna S, Hoang M, Badkul R, Hoover A. Dosimetric impact of applicator displacement on three-dimensional image-guided high-dose-rate brachytherapy treatments for cervical cancer. J Contemp Brachytherapy 2023; 15:334-343. [PMID: 38026073 PMCID: PMC10669918 DOI: 10.5114/jcb.2023.132697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 10/15/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose To determine the dosimetric impact of brachytherapy applicator displacement during intracavitary (IC) and combined intracavitary/interstitial (IC/IS) high-dose-rate brachytherapy in the treatment of cervical cancer. Material and methods Data from 27 consecutively treated patients undergoing IC or IC/IS high-dose-rate brachytherapy with tandem and ovoid-based applicators at a single academic medical center were analyzed. Virtual applicator displacements (a single shift of whole applicator with tandem/ovoid/associated needles) of 0 (clinical position), 2, 5, 7, and 10 mm in the inferior direction were modeled on treatment planning CT or MRI scans, with maintaining the same dwell times. Radiation dose to target volumes (D90 of high-risk clinical target volume) and organs at risk (OARs) (D0.1cc, D1cc, and D2cc of bladder, rectum, and sigmoid) were calculated for each virtual applicator shift, and significance of displacements was assessed using general linear model and Kruskal-Wallis test. Results Mean dose to high-risk clinical target volume (HR-CTV) D90 was 95.7%, 88.9%, 84.6%, and 77.1% of the prescribed dose in clinical position with displacements of 2, 5, 7, and 10 mm, respectively. Rectal D2cc significantly increased by 28% and 44% at displacement of 7 mm and 10 mm, respectively. IC/IS cases showed relatively greater dosimetric differences than IC cases, with HR-CTV D90 doses of 94.4%, 85.8%, 80.4%, and 72.4% at virtual displacements of 2, 5, 7, and 10 mm, respectively. Conclusions Applicator displacements of 5 mm or greater result in statistically significant and clinically meaningful decreases in radiation dose to HR-CTV during 3-dimensional high-dose-rate brachytherapy treatment planning, with corresponding increase in radiation dose to the rectum. IC/IS applicator displacements lead to relatively greater differences than those of IC applicators.
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Affiliation(s)
- Sandun Jayarathna
- Department of Radiation Oncology, The University of Kansas Cancer Center, Kansas City, Kansas, United States
| | - Matthew Hoang
- Department of Radiation Oncology, The University of Kansas Cancer Center, Kansas City, Kansas, United States
| | - Rajeev Badkul
- Department of Radiation Oncology, The University of Kansas Cancer Center, Kansas City, Kansas, United States
| | - Andrew Hoover
- Department of Radiation Oncology, The University of Kansas Cancer Center, Kansas City, Kansas, United States
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25
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Lee VWY, Yip WWL, Tang SYK, Leung MPH, Kwan KKK, Liu ACH, Chan VNY, Wu JWS, Cheng JNS, Chiang CL, Ho-Fun Lee V. Efficacy and feasibility of 3D printed redesigned Venezia™ applicator for treating advanced cervix and recurrent endometrial cancer. Phys Med 2023; 114:103150. [PMID: 37757501 DOI: 10.1016/j.ejmp.2023.103150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 08/19/2023] [Accepted: 09/22/2023] [Indexed: 09/29/2023] Open
Abstract
PURPOSE Venezia™ is an interstitial brachytherapy applicator for treating advanced cervical and vaginal vault recurrent cancer. However, there are limitations that lead to suboptimal target coverage. 3D printing introduction allows the redesign of Venezia™ for bulky and irregular-shaped tumors. METHODS This study first describes three new designs included: 1) add-on needles template allowed for an extra layer of straight and oblique needles, 2) redesigned vaginal cap so straight and oblique needles can be used together and 3) redesigned central tube allowed vaginal vault interstitial needle insertion. Drawbacks to original Venezia™ and rationale for using these new designs were discussed. Dosimetric analysis by comparing the original Venezia™ with new design for 10 cases in Oncentra treatment planning system v4.5 (Elekta, Stockholm, Sweden) to observe the dose differences in gross tumor volume (GTV), high risk clinical target volume (HRCTV), intermediate clinical target volume (IRCTV) and organs at risk. RESULTS For the dosimetric comparison, there were statistically significantly increased median minimal dose to 98% (D98%) of GTV, 90% (D90%) of HRCTV, and IRCTV for the new design with p-value of 0.008, 0.005 and 0.0018, respectively. Comparing the physical dose of D98% of GTV, D90% of HRCTV, and IRCTV when using the new design, it averagely increased by 11.7%, 8.0%, 19.4%, respectively per fraction. CONCLUSIONS Dosimetric comparison revealed the new designs increased the dose to GTV, HRCTV and IRCTV and fulfilled the dose constraints of bladder, rectum and sigmoid. The 3D printed new design is biocompatible, inexpensive and can be patient specific.
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Affiliation(s)
- Venus W Y Lee
- Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong, China.
| | - Winnie W L Yip
- Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong, China
| | - Steven Y K Tang
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China
| | - Mike P H Leung
- Department of Prosthetic and Orthotic, Tuen Mun Hospital, Hong Kong, China
| | - Keith K K Kwan
- Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong, China
| | - Alex C H Liu
- Department of Radiation Therapy, Cancer and Blood Service, Auckland City Hospital, Te Whatu Ora - Health New Zealand, New Zealand
| | | | - Jenna W S Wu
- Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong, China
| | - Jean N S Cheng
- Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong, China
| | - Chi-Leung Chiang
- Department of Clinical Oncology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Clinical Oncology Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Victor Ho-Fun Lee
- Department of Clinical Oncology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Clinical Oncology Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.
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26
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Ecker S, Kirisits C, Schmid M, Knoth J, Heilemann G, De Leeuw A, Sturdza A, Kirchheiner K, Jensen N, Nout R, Jürgenliemk-Schulz I, Pötter R, Spampinato S, Tanderup K, Eder-Nesvacil N. EviGUIDE - a tool for evidence-based decision making in image-guided adaptive brachytherapy for cervical cancer. Radiother Oncol 2023; 186:109748. [PMID: 37330055 DOI: 10.1016/j.radonc.2023.109748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/06/2023] [Accepted: 06/08/2023] [Indexed: 06/19/2023]
Abstract
PURPOSE To develop a novel decision-support system for radiation oncology that incorporates clinical, treatment and outcome data, as well as outcome models from a large clinical trial on magnetic resonance image-guided adaptive brachytherapy (MR-IGABT) for locally advanced cervical cancer (LACC). METHODS A system, called EviGUIDE, was developed that combines dosimetric information from the treatment planning system, patient and treatment characteristics, and established tumor control probability (TCP), and normal tissue complication probability (NTCP) models, to predict clinical outcome of radiotherapy treatment of LACC. Six Cox Proportional Hazards models based on data from 1341 patients of the EMBRACE-I study have been integrated. One TCP model for local tumor control, and five NTCP models for OAR morbidities. RESULTS EviGUIDE incorporates TCP-NTCP graphs to help users visualize the clinical impact of different treatment plans and provides feedback on achievable doses based on a large reference population. It enables holistic assessment of the interplay between multiple clinical endpoints and tumour and treatment variables. Retrospective analysis of 45 patients treated with MR-IGABT showed that there exists a sub-cohort of patients (20%) with increased risk factors, that could greatly benefit from the quantitative and visual feedback. CONCLUSION A novel digital concept was developed that can enhance clinical decision- making and facilitate personalized treatment. It serves as a proof of concept for a new generation of decision support systems in radiation oncology, which incorporate outcome models and high-quality reference data, and aids the dissemination of evidence-based knowledge about optimal treatment and serve as a blueprint for other sites in radiation oncology.
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Affiliation(s)
- Stefan Ecker
- Medical University of Vienna, Department of Radiation Oncology, Vienna, Austria.
| | - Christian Kirisits
- Medical University of Vienna, Department of Radiation Oncology, Vienna, Austria
| | - Maximilian Schmid
- Medical University of Vienna, Department of Radiation Oncology, Vienna, Austria
| | - Johannes Knoth
- Medical University of Vienna, Department of Radiation Oncology, Vienna, Austria
| | - Gerd Heilemann
- Medical University of Vienna, Department of Radiation Oncology, Vienna, Austria
| | - Astrid De Leeuw
- University Medical Centre Utrecht, Department of Radiation Oncology, Utrecht, the Netherlands
| | - Alina Sturdza
- Medical University of Vienna, Department of Radiation Oncology, Vienna, Austria
| | - Kathrin Kirchheiner
- Medical University of Vienna, Department of Radiation Oncology, Vienna, Austria
| | - Nina Jensen
- Aarhus University Hospital, Department of Oncology, Aarhus, Denmark
| | - Remi Nout
- Erasmus MC Cancer Institute, University Medical Center Rotterdam, Department of Radiotherapy, Rotterdam, the Netherlands
| | - Ina Jürgenliemk-Schulz
- University Medical Centre Utrecht, Department of Radiation Oncology, Utrecht, the Netherlands
| | - Richard Pötter
- Medical University of Vienna, Department of Radiation Oncology, Vienna, Austria
| | - Sofia Spampinato
- Aarhus University Hospital, Department of Oncology, Aarhus, Denmark
| | - Kari Tanderup
- Aarhus University Hospital, Department of Oncology, Aarhus, Denmark
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27
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Fischer AM, Hague T, Hoskin PJ. CBCT-based deformable dose accumulation of external beam radiotherapy in cervical cancer. Acta Oncol 2023; 62:923-931. [PMID: 37488951 DOI: 10.1080/0284186x.2023.2238543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 06/22/2023] [Indexed: 07/26/2023]
Abstract
Background: Delivered radiotherapy doses do not exactly match those planned for a course of treatment, largely due to inter-fraction changes in anatomy. In this study, accumulated delivered dose was calculated for a sample of cervical cancer patients, by deformably registering daily cone beam computed tomography (CBCT) images to the planning computed tomography (CT) scan. Planned and accumulated doses were compared for the clinical target volume (CTV), bladder, and rectum.Material and Methods: For 10 patients receiving 45 Gy in 25 fractions of external beam radiotherapy, daily dose distributions were calculated on CBCT. These images were deformed onto the planning CT and the dose was accumulated using Velocity 4.1 (Varian Medical Systems, Palo Alto, USA). The quality of deformable image registration was evaluated visually and by calculating Dice similarity coefficients and mean distance to agreement.Results: V95%>99% was achieved for the primary CTV in 9/10 patients for the planned dose distribution and 7/10 patients for the accumulated dose distribution. Primary CTV coverage by 95% of the prescription dose was reduced in one patient, due to an increase in anterior-posterior separation. Comparison of planned and accumulated dose volume histograms (DVHs) for the bladder and rectum found agreement within 5% at low and intermediate doses, but differences exceeded 20% at higher doses. Direct addition of CBCT DVHs was seen to be a poor estimate for the accumulated DVH at higher doses.Conclusion: Computation of delivered radiotherapy dose that accounts for inter-fraction anatomical changes is important for establishing dose-effect relationships. Updating delivered dose distributions after each fraction would support informed clinical decision making on any potential treatment interventions.
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Affiliation(s)
| | | | - Peter J Hoskin
- Mount Vernon Cancer Centre, Northwood, UK
- Division of Cancer Sciences, Faculty of Biology Medicine and Health, University of Manchester, Manchester, UK
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28
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Sommat K, Yap SP, Yeo RMC, Tan HSK, Soong YL, Tuan JKL, Sin IH. Oncologic outcomes after MRI-assisted image-guided brachytherapy with hybrid interstitial and intra-cavitary applicators under moderate sedation for locally advanced cervix cancer. J Contemp Brachytherapy 2023; 15:245-252. [PMID: 37799121 PMCID: PMC10548430 DOI: 10.5114/jcb.2023.130976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/04/2023] [Indexed: 10/07/2023] Open
Abstract
Purpose To report outcomes of using image-guided hybrid intra-cavitary/interstitial applicators under moderate sedation for locally advanced cervical cancer patients in our institution. Material and methods A total of 69 fractions of brachytherapy with hybrid applicators were performed in 33 patients from January 2017 to April 2021. All patients underwent MRI pelvis 1 week pre-brachytherapy to determine suitability for interstitial brachytherapy and pre-plan needle placement. All insertion of applicators were performed under moderate sedation with midazolam and/or fentanyl. Fifty-eight (84.1%) fractions were planned with CT alone. Clinical outcomes, dose volume parameters, and toxicities were analyzed. Results The median follow-up was 28 months. A total of 320 needles (median, 5 needles per fraction) were implanted, with a median insertion depth of 3 cm (range, 1.5-4 cm). The median high-risk clinical target volume (HR-CTV) during initial brachytherapy was 34.5 cc (range, 17.8-74.7 cc). The median total EQD2 D2cc of the rectum, bladder, sigmoid, and small intestine colon was 71.8 Gy, 81.5 Gy, 69 Gy, and 58.3 Gy, respectively. The 2-year local control and overall survival were 80.7% and 77.7%, respectively. Larger volume HR-CTV was significantly associated with worse local control (HR = 1.08, p = 0.005) and overall survival (HR = 1.04, p = 0.015). None of the patients required in-patient admission or blood transfusion post-procedure. Late grade 3 gastrointestinal and genitourinary toxicities were observed in 4 patients (12.2%). Conclusions Hybrid applicators inserted under moderate sedation are feasible and safe. Image-guided interstitial brachytherapy with CT planning aided by MRI performed 1 week pre-brachytherapy is associated with favorable outcomes and modest toxicities.
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Affiliation(s)
- Kiattisa Sommat
- Division of Radiation Oncology, National Cancer Centre Singapore, Singapore
| | - Swee Peng Yap
- Division of Radiation Oncology, National Cancer Centre Singapore, Singapore
| | | | - Hoon Seng Khoo Tan
- Division of Radiation Oncology, National Cancer Centre Singapore, Singapore
| | - Yoke Lim Soong
- Division of Radiation Oncology, National Cancer Centre Singapore, Singapore
| | | | - Iris Huili Sin
- Division of Radiation Oncology, National Cancer Centre Singapore, Singapore
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Sawada M, Shiraishi Y, Toyama H, Tanaka T, Kota R, Shigematsu N. Dosimetric comparison of rectal dose-reductive techniques in intra-cavitary brachytherapy for cervical cancer: A retrospective analysis. J Contemp Brachytherapy 2023; 15:269-274. [PMID: 37799123 PMCID: PMC10548429 DOI: 10.5114/jcb.2023.130842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 07/25/2023] [Indexed: 10/07/2023] Open
Abstract
Purpose Rectal complications in radiotherapy for cervical cancer can highly affect quality of life and correlate with rectal dose. Vaginal gauze packing (VP) and rectal retraction (RR) are widely used for rectal dose reduction in high-dose-rate brachytherapy. We aimed to perform a dosimetric comparison of these two methods for three-dimensional image-guided adaptive brachytherapy. Material and methods We retrospectively examined 50 patients with cervical cancer treated with definitive radiotherapy, including intra-cavitary brachytherapy, performed with VP and RR. We extracted two fractions for each patient: one fraction with VP and the next fraction with RR, and then compared dose-volume parameters. In total, 50 fractions each were analyzed in VP and RR groups. Dose to 90% (D90) of high-risk clinical target volume (HR-CTV), and minimum dose to most exposed 2.0 cm3 of other organs at risk (D2cm3) for the rectum and bladder were determined from planning computed tomography. Results There were no significant differences between VP and RR in D90 of HR-CTV (mean: 7.479 Gy and 7.652 Gy, respectively, p = 0.172). The D2cm3 values for the rectum (mean: 4.234 Gy vs. 4.627 Gy, p = 0.008) and bladder (mean: 5.959 Gy vs. 6.690 Gy, p < 0.001) were significantly lower with VP compared with RR. Conclusions VP reduced the dose to the rectum and bladder when compared with RR without impairing the dose to CTV.
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Affiliation(s)
- Masafumi Sawada
- Address for correspondence: Masafumi Sawada, Department of Radiology, Keio University School of Medicine, 35, Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan, phone: +81-3-5363-3835, fax: +81-3-3359-7425, ⌧ e-mail:
| | - Yutaka Shiraishi
- Department of Radiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
- Department and institution address where the research was conducted: Department of Radiology, Keio University School of Medicine, 35, Shinano-machi, Shinjuku-ku, Tokyo, Japan
| | - Hirofumi Toyama
- Department of Radiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
- Department and institution address where the research was conducted: Department of Radiology, Keio University School of Medicine, 35, Shinano-machi, Shinjuku-ku, Tokyo, Japan
| | - Tomoki Tanaka
- Department of Radiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
- Department and institution address where the research was conducted: Department of Radiology, Keio University School of Medicine, 35, Shinano-machi, Shinjuku-ku, Tokyo, Japan
| | - Ryuichi Kota
- Department of Radiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
- Department and institution address where the research was conducted: Department of Radiology, Keio University School of Medicine, 35, Shinano-machi, Shinjuku-ku, Tokyo, Japan
| | - Naoyuki Shigematsu
- Department of Radiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
- Department and institution address where the research was conducted: Department of Radiology, Keio University School of Medicine, 35, Shinano-machi, Shinjuku-ku, Tokyo, Japan
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30
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Jacobsen MC, Maheshwari E, Klopp AH, Venkatesan AM. Image-Guided Radiotherapy for Gynecologic Malignancies: What the Radiologist Needs to Know. Radiol Clin North Am 2023; 61:725-747. [PMID: 37169434 DOI: 10.1016/j.rcl.2023.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Pelvic imaging is integral to contemporary radiotherapy (RT) management of gynecologic malignancies. For cervical, endometrial, vulvar, and vaginal cancers, three-dimensional imaging modalities aid in tumor staging and RT candidate selection and inform treatment strategy, including RT planning, execution, and posttherapy surveillance. State-of-the-art care routinely incorporates magnetic resonance (MR) imaging, 18F-fluorodeoxyglucose-PET/computed tomography (CT), and CT to guide external beam RT and brachytherapy, allowing the customization of RT plans to maximize patient outcomes and reduce treatment-related toxicities. Follow-up imaging identifies radiation-resistant and recurrent disease as well as short-term and long-term toxicities from RT.
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Affiliation(s)
- Megan C Jacobsen
- Division of Diagnostic Imaging, Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1400 Pressler Street, Unit 1472, Houston, TX 77030, USA. https://twitter.com/megjacobsen
| | - Ekta Maheshwari
- Division of Abdominal Imaging, Department of Radiology, University of Pittsburgh Medical Center, PUH Suite E204, 200 Lothrop St, Pittsburgh, PA 15213, USA. https://twitter.com/dr_ektam
| | - Ann H Klopp
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, 1400 Pressler Street, Houston, TX 77030, USA. https://twitter.com/AnnKloppMD
| | - Aradhana M Venkatesan
- Division of Diagnostic Imaging, Department of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, 1400 Pressler Street, Unit 1473, Houston, TX 77030, USA.
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Zhang Z, Zhang N, Cheng G. Application of three-dimensional multi-imaging combination in brachytherapy of cervical cancer. LA RADIOLOGIA MEDICA 2023; 128:588-600. [PMID: 37138200 DOI: 10.1007/s11547-023-01632-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/12/2023] [Indexed: 05/05/2023]
Abstract
BACKGROUND Three-dimensional (3D) imaging has an important role in brachytherapy and the treatment of cervical cancer. The main imaging methods used in the cervical cancer brachytherapy include magnetic resonance imaging (MRI), computer tomography (CT), ultrasound (US), and positron emission tomography (PET). However, single-imaging methods have certain limitations compared to multi-imaging. The application of multi-imaging can make up for the shortcomings and provide a more suitable imaging selection for brachytherapy. PURPOSE This review details the situation and scope of existing multi-imaging combination methods in cervical cancer brachytherapy and provides a reference for medical institutions. MATERIALS AND METHODS Searched the literature related to application of three-dimensional multi-imaging combination in brachytherapy of cervical cancer in PubMed/Medline and Web of Science electronic databases. Summarized the existing combined imaging methods and the application of each method in cervical cancer brachytherapy. CONCLUSION The current imaging combination methods mainly include MRI/CT, US/CT, MRI/US, and MRI/PET. The combination of two imaging tools can be used for applicator implantation guidance, applicator reconstruction, target and organs at risk (OAR) contouring, dose optimization, prognosis evaluation, etc., which provides a more suitable imaging choice for brachytherapy.
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Affiliation(s)
- Zhaoming Zhang
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, No.126 Xiantai Street, Changchun, China
| | - Ning Zhang
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, No.126 Xiantai Street, Changchun, China
| | - Guanghui Cheng
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, No.126 Xiantai Street, Changchun, China.
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Gutiérrez Miguélez C, Rodríguez Villalba S, Villafranca Iturre E, Fuentemilla Urio N, Richart Sancho J, Córdoba Lago S, Pino Sorroche F, Gracia Lucio R, Herreros Martínez A, Najjari-Jamal D. Recommendations of the Spanish brachytherapy group of the Spanish Society of Radiation Oncology and the Spanish Society of Medical Physics for interstitial high-dose-rate brachytherapy for gynaecologic malignancies. Clin Transl Oncol 2023; 25:912-932. [PMID: 36445642 PMCID: PMC10025210 DOI: 10.1007/s12094-022-03016-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 11/12/2022] [Indexed: 12/02/2022]
Abstract
The present document includes consensus-based recommendations from the Brachytherapy Group (GEB) of the Spanish Society of Radiation Oncology (SEOR) and the Spanish Society of Medical Physics (SEFM) for interstitial high-dose-rate (HDR) brachytherapy (BT) for gynaecologic malignancies. A nine-item survey-which included questions on experience with interstitial BT; indications and technique; applicator type; magnetic resonance imaging (MRI)-based planning; dose; fractionation schedule; and treatment planning-was sent to all radiation oncology departments (n = 174) in Spain in 2021. Responses were received from 36 centres (50% of all centres [n = 72] with a BT unit). The consensus-based recommendations presented here are based on a review of the available literature, professional experience among the group of experts, and in-person discussions held during the annual meeting of these two societies. We describe the results of the survey and the following: indications; contraindications; patient selection; description of applicators; role of imaging in planning; contouring; dose prescription; dosimetric reconstruction; optimisation; and dose indications for cancers of the cervix, vagina, and vulva. The various clinical scenarios in which interstitial BT is used in the treatment of gynaecological tumours are described in detail, including cervix intracavitary/interstitial hybrid HDR-BT; cervix perineal templates/freehand implants; primary vaginal malignancies/vaginal recurrences; and vulvar interstitial implants.
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Affiliation(s)
- Cristina Gutiérrez Miguélez
- Radiation Oncology Department, Institut Català d'Oncologia, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona (UB) Catalonia, Hospitalet de Llobregat, Spain.
| | | | | | | | - Jose Richart Sancho
- Radiation Oncology Department, Hospital Clínica Benidorm, Benidorm, Spain
- Radiation Oncology Department, Hospital Universitario San Juan, Alicante, Spain
| | - Sofía Córdoba Lago
- Radiation Oncology Department, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Francisco Pino Sorroche
- Radiophysics Department, Institut Català d'Oncologia, Hospitalet de Llobregat, Catalonia, Spain
| | - Ruth Gracia Lucio
- Radiophysics Department, Institut Català d'Oncologia, Hospitalet de Llobregat, Catalonia, Spain
| | | | - Dina Najjari-Jamal
- Radiation Oncology Department, Institut Català d'Oncologia, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona (UB) Catalonia, Hospitalet de Llobregat, Spain
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Stevens MJ, Ko F, Martland J, Brown R, Bell L, Atyeo J, Yim J. Safety and efficacy of single insertion accelerated MR-image guided brachytherapy following chemo-radiation in locally advanced cervix cancer: modifying our EMBRACE during the COVID pandemic. Radiat Oncol 2023; 18:54. [PMID: 36941643 PMCID: PMC10026240 DOI: 10.1186/s13014-023-02240-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 03/06/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND Utero-vaginal brachytherapy (BT) is an irreplaceable care component for the curative treatment of locally advanced cervix cancer (LACC). Magnetic Resonance Imaging (MRI)-image guided adaptive BT (IGABT) using the GYN-GEC-ESTRO EMBRACE guidelines is the international care standard. Usually following chemo-radiation therapy (CRT), IGABT has high proven utility in LACC but requires significant health system resources. Timely access was disrupted by the COVID-19 pandemic which challenged us to re-design our established IGABT care pathway. METHODS From April 2020 consecutive patients with LACC were enrolled after CRT in a single arm exploratory non-inferiority study of a modified IGABT (mIGABT) protocol. This delivered an iso-effective IGABT dose (39.3 Gy: EQD2: α/β10Gy concept) over a 24-h period during a single overnight hospitalisation. RESULTS Fourteen LACC patients received mIGABT from April 2020 to March 2022. Median age was 62.5 years (37-82 years). LACC histology was primary squamous (9/14) or adeno-carcinoma (5/14). International Federation of Gynaecology and Obstetrics (FIGO) 2018 stages ranged from IB1/2 (N = 3), IIA1/IIB (5), IIIB (2), IIIC1/2 (4) with mean ± standard deviation (SD) gross tumour volume-at-diagnosis (GTV_D) of 37.7 cc ± 71.6 cc. All patients achieved complete metabolic, clinical, and cytologic cancer response with CRT and IGABT. High-risk HPV was cleared by 6-months. Complete MRI-defined cancer response before mIGABT (GTV_Fx1) was seen in 77% of cases (10/13). Only two women developed metastatic disease and one died at 12-months; 13 patients were alive without cancer at mean 20.3 ± 7.2 months follow-up. Actuarial 2-year overall survival was 93%. Compared with our pre-COVID IGABT program, overall mIGABT cost-saving in this cohort was USD 22,866. Prescribed dose covered at least 90% (D90) of the entire cervix and any residual cancer at time of BT (HRCTV_D90: high-risk clinical target volume) with 3-fractions of 8.5 Gy delivered over 24-h (22.8 ± 1.7 h). Total treatment time including CRT was 38 days. The mIGABT schedule was well tolerated and the entire cohort met EMBRACE recommended (EQD2: α/β10Gy) combined HRCTV_D90 coverage of 87.5 ± 3.7 Gy. Similarly, organ-at-risk (OAR) median: interquartile range D2cc constraints (EQD2: α/β3Gy) were EMBRACE compliant: bladder (65.9 Gy: 58.4-72.5 Gy), rectum (59.1 Gy: 55.7-61.8 Gy), and sigmoid colon (54.6 Gy: 50.3-58.9 Gy). ICRU recto-vaginal point dose was significantly higher (75.7 Gy) in our only case of severe (G4) pelvic toxicity. CONCLUSIONS This study demonstrated the utility of mIGABT and VMAT CRT in a small cohort with LACC. Loco-regional control was achieved in all cases with minimal emergent toxicity. Single insertion mIGABT was logistically efficient, cost-saving, and patient-centric during the COVID-19 pandemic.
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Affiliation(s)
- Mark J Stevens
- Department of Radiation Oncology, Northern Sydney Cancer Centre, Royal North Shore Hospital, Level 1 ASB Building, St Leonards, NSW, 2065, Australia.
- Northern Clinical School, University of Sydney, St Leonards, NSW, Australia.
| | - Florence Ko
- Department of Radiation Oncology, Northern Sydney Cancer Centre, Royal North Shore Hospital, Level 1 ASB Building, St Leonards, NSW, 2065, Australia
| | - Judith Martland
- Department of Radiation Oncology, Northern Sydney Cancer Centre, Royal North Shore Hospital, Level 1 ASB Building, St Leonards, NSW, 2065, Australia
| | - Ryan Brown
- Department of Radiation Oncology, Northern Sydney Cancer Centre, Royal North Shore Hospital, Level 1 ASB Building, St Leonards, NSW, 2065, Australia
| | - Linda Bell
- Department of Radiation Oncology, Northern Sydney Cancer Centre, Royal North Shore Hospital, Level 1 ASB Building, St Leonards, NSW, 2065, Australia
| | - John Atyeo
- Department of Radiation Oncology, Northern Sydney Cancer Centre, Royal North Shore Hospital, Level 1 ASB Building, St Leonards, NSW, 2065, Australia
| | - Jackie Yim
- Department of Radiation Oncology, Northern Sydney Cancer Centre, Royal North Shore Hospital, Level 1 ASB Building, St Leonards, NSW, 2065, Australia
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Comparing dosimetry of locally advanced cervical cancer patients treated with 3 versus 4 fractions of MRI-guided brachytherapy. Brachytherapy 2023; 22:146-156. [PMID: 36528475 DOI: 10.1016/j.brachy.2022.11.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/07/2022] [Accepted: 11/11/2022] [Indexed: 12/23/2022]
Abstract
PURPOSE To demonstrate the feasibility of treating cervical cancer patients with MRI-guided brachytherapy (MRgBT) using 24 Gy in 3 fractions (F) versus a standard, more resource-intensive regimen of 28 Gy in 4F, and its ability to meet EMBRACE II planning aims. METHODS AND MATERIALS A retrospective review of 224 patients with FIGO Stage IB-IVA cervical cancer treated with 28 Gy/4F (n = 91) and 24 Gy/3F (n = 133) MRgBT between 2016-2021 was conducted. Multivariable linear regression models were fitted to compare dosimetric parameters between the two groups, adjusting for CTVHR and T stage. RESULTS Most patients had squamous cell carcinoma, T2b disease, and were treated with intracavitary applicator plus interstitial needles (96%). The 28 Gy/4F group had higher CTVHR (median 28 vs. 26 cm3, p = 0.04), CTVIR D98% (mean 65.5 vs. 64.5 Gy, p = 0.03), rectum D2cm3 (mean 61.7 vs. 59.2 Gy, p = 0.04) and bladder D2cm3 (81.3 vs. 77.9 Gy, p = 0.03). There were no significant differences in the proportion of patients meeting the EMBRACE II OAR dose constraints and planning aims, except fewer patients treated with 28 Gy/4F met rectum D2cm3 < 65 Gy (73 vs. 85%, p = 0.027) and ICRU rectovaginal point < 65 Gy (65 vs. 84%, p = 0.005). CONCLUSIONS Cervical cancer patients treated with 24 Gy/3F MRgBT had comparable target doses and lower OAR doses compared to those treated with 28 Gy/4F. A less-resource intense fractionation schedule of 24 Gy/3F is an alternative to 28 Gy/4F in cervix MRgBT.
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Wang J, Chen Y, Tu Y, Xie H, Chen Y, Luo L, Zhou P, Tang Q. Evaluation of auto-segmentation for brachytherapy of postoperative cervical cancer using deep learning-based workflow. Phys Med Biol 2023; 68. [PMID: 36753762 DOI: 10.1088/1361-6560/acba76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 02/08/2023] [Indexed: 02/10/2023]
Abstract
Objective. The purpose of this study was to evaluate the accuracy of brachytherapy (BT) planning structures derived from Deep learning (DL) based auto-segmentation compared with standard manual delineation for postoperative cervical cancer.Approach. We introduced a convolutional neural networks (CNN) which was developed and presented for auto-segmentation in cervical cancer radiotherapy. The dataset of 60 patients received BT of postoperative cervical cancer was used to train and test this model for delineation of high-risk clinical target volume (HRCTV) and organs at risk (OARs). Dice similarity coefficient (DSC), 95% Hausdorff distance (95%HD), Jaccard coefficient (JC) and dose-volume index (DVI) were used to evaluate the accuracy. The correlation between geometric metrics and dosimetric difference was performed by Spearman's correlation analysis. The radiation oncologists scored the auto-segmented contours by rating the lever of satisfaction (no edits, minor edits, major edits).Main results. The mean DSC values of DL based model were 0.87, 0.94, 0.86, 0.79 and 0.92 for HRCTV, bladder, rectum, sigmoid and small intestine, respectively. The Bland-Altman test obtained dose agreement for HRCTV_D90%, HRCTV_Dmean, bladder_D2cc, sigmoid_D2ccand small intestine_D2cc. Wilcoxon's signed-rank test indicated significant dosimetric differences in bladder_D0.1cc, rectum_D0.1ccand rectum_D2cc(P< 0.05). A strong correlation between HRCTV_D90%with its DSC (R= -0.842,P= 0.002) and JC (R= -0.818,P= 0.004) were found in Spearman's correlation analysis. From the physician review, 80% of HRCTVs and 72.5% of OARs in the test dataset were shown satisfaction (no edits).Significance. The proposed DL based model achieved a satisfied agreement between the auto-segmented and manually defined contours of HRCTV and OARs, although the clinical acceptance of small volume dose of OARs around the target was a concern. DL based auto-segmentation was an essential component in cervical cancer workflow which would generate the accurate contouring.
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Affiliation(s)
- Jiahao Wang
- Department of Radiation Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, People's Republic of China
| | - Yuanyuan Chen
- Department of Radiation Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, People's Republic of China
| | - Yeqiang Tu
- Department of Radiation Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, People's Republic of China
| | - Hongling Xie
- Department of Radiation Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, People's Republic of China
| | - Yukai Chen
- Department of Radiation Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, People's Republic of China
| | - Lumeng Luo
- Department of Radiation Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, People's Republic of China
| | - Pengfei Zhou
- Department of Radiation Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, People's Republic of China
| | - Qiu Tang
- Department of Radiation Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, People's Republic of China
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Dizendorf E, Sturdza A, Tagliaferri L, Russo L, Nesvacil N, Kirisits C. Implementation of online workshops on image-guided adaptive brachytherapy (interventional radiotherapy) in locally advanced cervical cancer: Experience of BrachyAcademy. Brachytherapy 2023; 22:343-351. [PMID: 36828765 DOI: 10.1016/j.brachy.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 01/17/2023] [Accepted: 01/21/2023] [Indexed: 02/25/2023]
Abstract
PURPOSE To provide educational support to brachytherapy users during the COVID-19 pandemic, online workshops were developed and implemented by BrachyAcademy, non-profit peer-to-peer educational initiative in Elekta. METHODS AND MATERIALS In 2021-2022 two online workshops were organized. Participating teams had to send a clinical case of locally advanced cervical cancer (LACC) including brachytherapy Digital Imaging and Communications in Medicine (DICOM) files and questions to the faculty. During the workshop, feedback was given to each clinical case by five faculty members (two Radiation Oncologists, one Radiologist, two Medical Physicists). Participants competed a post-workshop questionnaire which included combination of qualitative and quantitative questions via yes/no responses, Likert scale, and 1 to 10 scale. RESULTS Twenty-one teams from eight countries (Europe, Asia, Latin America) participated in two online workshops. The total number of participants was 49. The clinical cases represented LACC with The International Federation of Gynecology and Obstetrics (FIGO) stages from IB3 to IVA. During both, Workshop1 (W1) and Workshop 2 (W2) the following areas of improvement were identified: familiarity with the GEC ESTRO and The International Commission on Radiation Units & Measurements, Report 89 (ICRU 89) recommendations for contouring and planning based on clinical drawings and MRI sequencing choice; appropriate applicator selection; experience with interstitial needles; appropriate applicator reconstruction; dose optimization. The participants rated both workshops with overall scores 8,3 for W1, and 8,5 for W2. In 82% participants the training course fully met expectations for W1, and in 76% in W2. CONCLUSIONS We successfully implemented the online workshops on image-guided adaptive brachytherapy (IGABT) in LACC. Main performance issues and areas for improvement were identified based on multidisciplinary discussion of participant's clinical cases through all steps of the brachytherapy procedure. We encourage teams to consider online workshops in addition to hands-on training.
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Affiliation(s)
- Elena Dizendorf
- Nucletron Operations B.V. (Elekta), Veenendaal, The Netherlands
| | - Alina Sturdza
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.
| | - Luca Tagliaferri
- UOC Radioterapia Oncologica, Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Luca Russo
- UOC Radioterapia Oncologica, Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Nicole Nesvacil
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Christian Kirisits
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
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Tools for large-scale data analytics of an international multi-center study in radiation oncology for cervical cancer. Radiother Oncol 2023; 182:109524. [PMID: 36764459 DOI: 10.1016/j.radonc.2023.109524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023]
Abstract
PURPOSE To develop and implement a software that enables centers, treating patients with state-of-the-art radiation oncology, to compare their patient, treatment, and outcome data to a reference cohort, and to assess the quality of their treatment approach. MATERIALS AND METHODS A comprehensive data dashboard was designed, which al- lowed holistic assessment of institutional treatment approaches. The software was tested in the ongoing EMBRACE-II study for locally advanced cervical cancer. The tool created individualized dashboards and automatic analysis scripts, verified pro- tocol compliance and checked data for inconsistencies. Identified quality assurance (QA) events were analysed. A survey among users was conducted to assess usability. RESULTS The survey indicated favourable feedback to the prototype and highlighted its value for internal monitoring. Overall, 2302 QA events were identified (0.4% of all collected data). 54% were due to missing or incomplete data, and 46% originated from other causes. At least one QA event was found in 519/1001 (52%) of patients. QA events related to primary study endpoints were found in 16% of patients. Sta- tistical methods demonstrated good performance in detecting anomalies, with precisions ranging from 71% to 100%. Most frequent QA event categories were Treatment Technique (27%), Patient Characteristics (22%), Dose Reporting (17%), Outcome 156 (15%), Outliers (12%), and RT Structures (8%). CONCLUSION A software tool was developed and tested within a clinical trial in radia- tion oncology. It enabled the quantitative and qualitative comparison of institutional patient and treatment parameters with a large multi-center reference cohort. We demonstrated the value of using statistical methods to automatically detect implau- sible data points and highlighted common pitfalls and uncertainties in radiotherapy for cervical cancer.
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Offersen BV, Aznar MC, Bacchus C, Coppes RP, Deutsch E, Georg D, Haustermans K, Hoskin P, Krause M, Lartigau EF, Lee AWM, Löck S, Thwaites DI, van der Kogel AJ, van der Heide U, Valentini V, Overgaard J, Baumann M. The role of ESTRO guidelines in achieving consistency and quality in clinical radiation oncology practice. Radiother Oncol 2023; 179:109446. [PMID: 36566990 DOI: 10.1016/j.radonc.2022.109446] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022]
Affiliation(s)
- Birgitte Vrou Offersen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark; Department of Oncology, Aarhus University Hospital, Denmark; Danish Center for Particle Therapy, Aarhus University Hospital, Denmark.
| | - Marianne C Aznar
- Division of Cancer Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, The Christie NHS Foundation Trust, United Kingdom
| | - Carol Bacchus
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Rob P Coppes
- Department of Biomedical Sciences of Cells & Systems, Section Molecular Cell Biology, Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Eric Deutsch
- Department of Radiation Oncology, Institut d'Oncologie Thoracique (IOT), Gustave Roussy, France
| | - Dieter Georg
- Division Medical Radiation Physics, Department of Radiation Oncology, Medical University of Vienna, Austria
| | - Karin Haustermans
- Department of Radiation Oncology, University Hospitals Leuven, Belgium
| | - Peter Hoskin
- Mount Vernon Cancer Centre and University of Manchester, United Kingdom
| | - Mechthild Krause
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Germany
| | - Eric F Lartigau
- Academic Department of Radiotherapy, Oscar Lambret Comprehensive Cancer Center, Lille, France
| | - Anne W M Lee
- Department of Clinical Oncology, Shenzhen Key Laboratory for Cancer Metastasis and Personalized Therapy, University of Hong Kong - Shenzhen Hospital, China
| | - Steffen Löck
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Germany
| | - David I Thwaites
- Institute of Medical Physics, School of Physics, University of Sydney, Australia; Radiotherapy Research Group, St James's Hospital and University of Leeds, United Kingdom
| | - Albert J van der Kogel
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, USA
| | - Uulke van der Heide
- Department of Radiation Oncology, the Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Vincenzo Valentini
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, UOC Radioterapia Oncologica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
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Poder J, Rivard MJ, Howie A, Carlsson Tedgren Å, Haworth A. Risk and Quality in Brachytherapy From a Technical Perspective. Clin Oncol (R Coll Radiol) 2023:S0936-6555(23)00002-X. [PMID: 36682968 DOI: 10.1016/j.clon.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/23/2022] [Accepted: 01/04/2023] [Indexed: 01/15/2023]
Abstract
AIMS To provide an overview of the history of incidents in brachytherapy and to describe the pillars in place to ensure that medical physicists deliver high-quality brachytherapy. MATERIALS AND METHODS A review of the literature was carried out to identify reported incidents in brachytherapy, together with an evaluation of the structures and processes in place to ensure that medical physicists deliver high-quality brachytherapy. In particular, the role of education and training, the use of process and technical quality assurance and the role of international guidelines are discussed. RESULTS There are many human factors in brachytherapy procedures that introduce additional risks into the process. Most of the reported incidents in the literature are related to human factors. Brachytherapy-related education and training initiatives are in place at the societal and departmental level for medical physicists. Additionally, medical physicists have developed process and technical quality assurance procedures, together with international guidelines and protocols. Education and training initiatives, together with quality assurance procedures and international guidelines may reduce the risk of human factors in brachytherapy. CONCLUSION Through application of the three pillars (education and training; process control and technical quality assurance; international guidelines), medical physicists will continue to minimise risk and deliver high-quality brachytherapy treatments.
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Affiliation(s)
- J Poder
- Department of Radiation Oncology, St George Cancer Care Centre, Kogarah, New South Wales, Australia; School of Physics, University of Sydney, Camperdown, New South Wales, Australia; Centre for Medical Radiation Physics, University of Wollongong, Wollongong, New South Wales, Australia.
| | - M J Rivard
- Department of Radiation Oncology, Alpert Medical School of Brown University, Providence, RI, USA
| | - A Howie
- Department of Radiation Oncology, St George Cancer Care Centre, Kogarah, New South Wales, Australia
| | - Å Carlsson Tedgren
- Department of Health, Medicine and Caring Sciences (HMV), Radiation Physics, Linköping University, Linköping, Sweden; Medical Radiation Physics and Nuclear Medicine, The Karolinska University Hospital, Stockholm, Sweden; Department of Oncology Pathology, The Karolinska Institute, Stockholm, Sweden
| | - A Haworth
- School of Physics, University of Sydney, Camperdown, New South Wales, Australia
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Investigation of in vivo source tracking error thresholds for interstitial and intra-cavitary high-dose-rate cervical brachytherapy. J Contemp Brachytherapy 2022; 14:568-581. [PMID: 36819472 PMCID: PMC9924149 DOI: 10.5114/jcb.2022.123977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/21/2022] [Indexed: 01/18/2023] Open
Abstract
Purpose The purpose of this study was to determine a comprehensive in vivo source tracking error thresholds in high-dose-rate (HDR) brachytherapy for cervical cancer. Achieving this enables the definition of an action level for imminent in vivo source tracking technologies and treatment monitoring devices, preventing clinically relevant changes to the applied dose. Material and methods Retrospective HDR interstitial (n = 10) and intra-cavitary (n = 20) cervical brachytherapy patients were randomly selected to determine the feasibility of implementing in vivo source tracking error thresholds. A script was developed to displace all dwell positions in each treatment plan, along all major axes from their original position. Dose-volume histogram (DVH) indices were calculated without re-optimization of modified plans to determine the appropriate in vivo source tracking error thresholds in each direction. Results In vivo source tracking error thresholds were directionally dependent; the smallest were found to be 2 mm in the anterior and posterior directions for both interstitial and intra-cavitary treatments. High-risk clinical treatment volume (HR-CTV) coverage was significantly impacted by displacements of 4 to 5 mm along each axis. Critically, there was a large variation in DVH metrics with displacement due to change in dwell weightings and patient anatomy. Conclusions Determining the dosimetric impact of dwell position displacement provides a clinical benchmark for the development of pre-treatment verification devices and an action level for real-time treatment monitoring. It was established that an in vivo source tracking error threshold needs to be patient-specific. In vivo source tracking error thresholds should be determined for each patient, and can be conducted with extension of the method established in this work.
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A Novel Workflow with a Customizable 3D Printed Vaginal Template and a Direction Modulated Brachytherapy (DMBT) Tandem Applicator for Adaptive Interstitial Brachytherapy of the Cervix. J Clin Med 2022; 11:jcm11236989. [PMID: 36498563 PMCID: PMC9738087 DOI: 10.3390/jcm11236989] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/21/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
A novel clinical workflow utilizing a direction modulated brachytherapy (DMBT) tandem applicator in combination with a patient-specific, 3D printed vaginal needle-track template for an advanced image-guided adaptive interstitial brachytherapy of the cervix. The proposed workflow has three main steps: (1) pre-treatment MRI, (2) an initial optimization of the needle positions based on the DMBT tandem positioning and patient anatomy, and a subsequent inverse optimization using the combined DMBT tandem and needles, and (3) rapid 3D printing. We retrospectively re-planned five patient cases for two scenarios; one plan with the DMBT tandem (T) and ovoids (O) with the original needle (ND) positions (DMBT + O + ND) and another with the DMBT T&O and spatially reoptimized needles (OptN) positions (DMBT + O + OptN). All retrospectively reoptimized plans have been compared to the original plan (OP) as well. The accuracy of 3D printing was verified through the image registration between the planning CT and the CT of the 3D-printed template. The average difference in D2cc for the bladder, rectum, and sigmoid between the OPs and DMBT + O + OptNs were -8.03 ± 4.04%, -18.67 ± 5.07%, and -26.53 ± 4.85%, respectively. In addition, these average differences between the DMBT + O + ND and DMBT + O + OptNs were -2.55 ± 1.87%, -10.70 ± 3.45%, and -22.03 ± 6.01%, respectively. The benefits could be significant for the patients in terms of target coverage and normal tissue sparing and increase the optimality over free-hand needle positioning.
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Abdalvand N, Sadeghi M, Mahdavi SR, Abdollahi H, Qasempour Y, Mohammadian F, Birgani MJT, Hosseini K. Brachytherapy outcome modeling in cervical cancer patients: A predictive machine learning study on patient-specific clinical, physical and dosimetric parameters. Brachytherapy 2022; 21:769-782. [PMID: 35933272 DOI: 10.1016/j.brachy.2022.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 06/09/2022] [Accepted: 06/26/2022] [Indexed: 12/14/2022]
Abstract
PURPOSE To predict clinical response in locally advanced cervical cancer (LACC) patients by a combination of measures, including clinical and brachytherapy parameters and several machine learning (ML) approaches. METHODS Brachytherapy features such as insertion approaches, source metrics, dosimetric, and clinical measures were used for modeling. Four different ML approaches, including LASSO, Ridge, support vector machine (SVM), and Random Forest (RF), were applied to extracted measures for model development alone or in combination. Model performance was evaluated using the area under the curve (AUC) of receiver operating characteristics curve, sensitivity, specificity, and accuracy. Our results were compared with a reference model developed by simple logistic regression applied to three distinct clinical features identified by previous papers. RESULTS One hundred eleven LACC patients were included. Nine data sets were obtained based on the features, and 36 predictive models were built. In terms of AUC, the model developed using RF applied to dosimetric, physical, and total BT sessions features were found as the most predictive [AUC; 0.82 (0.95 confidence interval (CI); 0.79 -0.93), sensitivity; 0.79, specificity; 0.76, and accuracy; 0.77]. The AUC (0.95 CI), sensitivity, specificity, and accuracy for the reference model were found as 0.56 (0.52 ...0.68), 0.51, 0.51, and 0.48, respectively. Most RF models had significantly better performance than the reference model (Bonferroni corrected p-value < 0.0014). CONCLUSION Brachytherapy response can be predicted using dosimetric and physical parameters extracted from treatment parameters. Machine learning algorithms, including Random Forest, could play a critical role in such predictive modeling.
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Affiliation(s)
- Neda Abdalvand
- Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Sadeghi
- Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Seied Rabi Mahdavi
- Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran; Radiation Biology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Hamid Abdollahi
- Department of Radiologic Technology, Faculty of Allied Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Younes Qasempour
- Student Research Committee, Faculty of Allied Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Fatemeh Mohammadian
- Department of Radiation Oncology, Golestan Hospital, Ahvaz Jundishapour University of Medical Sciences, Ahvaz, Iran
| | | | - Khadijeh Hosseini
- Department of Radiation Oncology, Golestan Hospital, Ahvaz Jundishapour University of Medical Sciences, Ahvaz, Iran
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Whiteside L, McDaid L, Hales RB, Rodgers J, Dubec M, Huddart RA, Choudhury A, Eccles CL. To see or not to see: Evaluation of magnetic resonance imaging sequences for use in MR Linac-based radiotherapy treatment. J Med Imaging Radiat Sci 2022; 53:362-373. [PMID: 35850925 DOI: 10.1016/j.jmir.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 06/01/2022] [Accepted: 06/20/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND/PURPOSE This work evaluated the suitability of MR derived sequences for use in online adaptive RT workflows on a 1.5 Tesla (T) MR-Linear Accelerator (MR Linac). MATERIALS/METHODS Non-patient volunteers were recruited to an ethics approved MR Linac imaging study. Participants attended 1-3 imaging sessions in which a combination of DIXON, 2D and 3D volumetric T1 and T2 weighted images were acquired axially, with volunteers positioned using immobilisation devices typical for radiotherapy to the anatomical region being scanned. Images from each session were appraised by three independent reviewers to determine optimal sequences over six anatomical regions: head and neck, female and male pelvis, thorax (lung), thorax (breast/chest wall) and abdomen. Site specific anatomical structures were graded by the perceived ability to accurately contour a typical organ at risk. Each structure was independently graded on a 4-point Likert scale as 'Very Clear', 'Clear', 'Unclear' or 'Not visible' by observers, consisting of radiographers (therapeutic and diagnostic) and clinicians. RESULTS From July 2019 to September 2019, 18 non-patient volunteers underwent 24 imaging sessions in the following anatomical regions: head and neck (n=3), male pelvis (n=4), female pelvis (n=5), lung/oesophagus (n=5) abdomen (n=4) and chest wall/breast (n=3). T2 sequences were the most preferred for perceived ability to contour anatomy in both male and female pelvis. For all other sites T1 weighted DIXON sequences were most favourable. CONCLUSION This study has determined the preferential sequence selection for organ visualisation, as a pre-requisite to our institution adopting MR-guided radiotherapy for a more diverse range of disease sites.
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Affiliation(s)
- Lee Whiteside
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom.
| | - Lisa McDaid
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom
| | - Rosie B Hales
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom
| | - John Rodgers
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom
| | - Michael Dubec
- Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom; Christie Medical Physics and Engineering, The Christie NHS Foundation Trust, United Kingdom
| | - Robert A Huddart
- The Institute of Cancer Research, London UK; The Royal Marsden, London, United Kingdom
| | - Ananya Choudhury
- Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom; Department of Clinical Oncology, The Christie NHS Foundation Trust, United Kingdom
| | - Cynthia L Eccles
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom; Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
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Chan WL, Cheng MHF, Wu JTK, Choi CW, Tse RPY, Ho PPY, Cheung EE, Cheung A, Test KY, Chan KKL, Ngan HYS, Siu SWK, Ngan RKC, Lee AWM. Treatment Outcomes of Computer Tomography-Guided Brachytherapy in Cervical Cancer in Hong Kong: A Retrospective Review. Cancers (Basel) 2022; 14:cancers14163934. [PMID: 36010927 PMCID: PMC9406104 DOI: 10.3390/cancers14163934] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 08/11/2022] [Indexed: 11/29/2022] Open
Abstract
Simple Summary This retrospective study reviews 135 patients with locally advanced cervical cancer treated with chemo-radiotherapy with image-guided adaptive brachytherapy with CT guidance. The study has a long follow-up period of 53.6 months. The outcome was excellent with a five-year local control, pelvic control, distant metastasis-free survival and overall survival rates being 90.7%, 84.2%, 80.0% and 87.2%, respectively. Adenocarcinoma was significantly associated with worse local control, pelvic control, distant metastasis-free survival and overall survival rates. Abstract (1) Background: To report the long-term clinical outcomes of computer-tomography (CT)-guided brachytherapy (BT) for locally advanced cervical cancer. (2) Methods: A total of 135 patients with FIGO stage IB-IVA cervical cancer treated with definitive radiotherapy +/− chemotherapy with an IGABT boost at Queen Mary Hospital, Hong Kong, between November 2013 and December 2019 were included. Treatment included pelvic radiotherapy 40 Gy/20 Fr/4 weeks +/− chemotherapy then CT-guided BT (7 Gy × 4 Fr) and a sequential parametrial boost. The primary outcome was local control. Secondary outcomes were pelvic control, distant metastasis-free survival, overall survival (OS) and late toxicities. (3) Results: The median follow-up was 53.6 months (3.0–99.6 months). The five-year local control, pelvic control, distant metastasis-free survival and OS rates were 90.7%, 84.3%, 80.0% and 87.2%, respectively. The incidence of G3/4 long-term toxicities was 6.7%, including proctitis (2.2%), radiation cystitis (1.5%), bowel perforation (0.7%), ureteric stricture (0.7%) and vaginal stenosis and fistula (0.7%). Patients with adenocarcinomas had worse local control (HR 5.82, 95% CI 1.84–18.34, p = 0.003), pelvic control (HR 4.41, 95% CI 1.83–10.60, p = 0.001), distant metastasis-free survival (HR 2.83, 95% CI 1.17–6.84, p = 0.021) and OS (HR 4.38, 95% CI: 1.52–12.67, p = 0.003) rates. Distant metastasis-free survival was associated with HR-CTV volume ≥ 30 cm3 (HR 3.44, 95% CI 1.18–9.42, p = 0.025) and the presence of pelvic lymph node (HR 3.44, 95% CI 1.18–9.42, p = 0.025). OS was better in patients with concurrent chemotherapy (HR 4.33, 95% CI: 1.40–13.33, p = 0.011). (4) Conclusions: CT-guided BT for cervical cancer achieved excellent long-term local control and OS. Adenocarcinoma was associated with worse clinical outcomes. (4) Conclusion: CT-guided BT for cervical cancer achieved excellent long-term local control and OS. Adenocarcinoma was associated with worse clinical outcomes.
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Affiliation(s)
- Wing-Lok Chan
- Department of Clinical Oncology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- Correspondence:
| | | | - Jacky Tsun-Kit Wu
- LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Cheuk-Wai Choi
- School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Rosa Piu-Ying Tse
- Department of Clinical Oncology, Queen Mary Hospital, Hong Kong, China
| | - Patty Piu-Ying Ho
- Department of Clinical Oncology, Queen Mary Hospital, Hong Kong, China
| | - Emina Edith Cheung
- Department of Clinical Oncology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Andy Cheung
- Department of Clinical Oncology, Queen Mary Hospital, Hong Kong, China
| | - Ka-Yu Test
- Department of Obstetrics and Gynecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Karen Kar-Loen Chan
- Department of Obstetrics and Gynecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Hexane Yuen-Sheung Ngan
- Department of Obstetrics and Gynecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | | | - Roger Kai-Cheong Ngan
- Department of Clinical Oncology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- Department of Clinical Oncology, Gleneagles Hospital, Hong Kong, China
| | - Anne Wing-Mui Lee
- Department of Clinical Oncology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- Department of Clinical Oncology, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518009, China
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Shen Z, Qu A, Jiang P, Jiang Y, Sun H, Wang J. Re-Irradiation for Recurrent Cervical Cancer: A State-of-the-Art Review. Curr Oncol 2022; 29:5262-5277. [PMID: 35892987 PMCID: PMC9331513 DOI: 10.3390/curroncol29080418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 11/16/2022] Open
Abstract
The recurrence rate of cervical cancer after primary treatment can reach 60%, and a poor prognosis is reported in most cases. Treatment options for the recurrence of cervical cancer mainly depend on the prior treatment regimen and the location of recurrent lesions. Re-irradiation is still considered as a clinical challenge, owing to a high incidence of toxicity, especially in in-field recurrence within a short period of time. Recent advances in radiotherapy have preliminarily revealed encouraging outcomes of re-irradiation. Several centers have concentrasted on stereotactic body radiation therapy (SBRT) for the treatment of well-selected cases. Meanwhile, as the image-guiding techniques become more precise, a better dose profile can also be achieved in brachytherapy, including high-dose-rate interstitial brachytherapy (HDR-ISBT) and permanent radioactive seed implantation (PRSI). These treatment modalities have shown promising efficacy with a tolerable toxicity, providing further treatment options for recurrent cervical cancer. However, it is highly unlikely to draw a definite conclusion from all of those studies due to the large heterogeneity among them and the lack of large-scale prospective studies. This study mainly reviews and summarizes the progress of re-irradiation for recurrent cervical cancer in recent years, in order to provide potential treatment regimens for the management of re-irradiation.
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Otal A, Celada F, Chimeno J, Vijande J, Pellejero S, Perez-Calatayud MJ, Villafranca E, Fuentemilla N, Blazquez F, Rodriguez S, Perez-Calatayud J. Review on Treatment Planning Systems for Cervix Brachytherapy (Interventional Radiotherapy): Some Desirable and Convenient Practical Aspects to Be Implemented from Radiation Oncologist and Medical Physics Perspectives. Cancers (Basel) 2022; 14:cancers14143467. [PMID: 35884528 PMCID: PMC9318845 DOI: 10.3390/cancers14143467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/10/2022] [Accepted: 07/14/2022] [Indexed: 11/16/2022] Open
Abstract
Intracavitary brachytherapy (BT, Interventional Radiotherapy, IRT), plays an essential role in the curative intent of locally advanced cervical cancer, for which the conventional approach involves external beam radiotherapy with concurrent chemotherapy followed by BT. This work aims to review the different methodologies used by commercially available treatment planning systems (TPSs) in exclusive magnetic resonance imaging-based (MRI) cervix BT with interstitial component treatments. Practical aspects and improvements to be implemented into the TPSs are discussed. This review is based on the clinical expertise of a group of radiation oncologists and medical physicists and on interactive demos provided by the software manufacturers. The TPS versions considered include all the new tools currently in development for future commercial releases. The specialists from the supplier companies were asked to propose solutions to some of the challenges often encountered in a clinical environment through a questionnaire. The results include not only such answers but also comments by the authors that, in their opinion, could help solve the challenges covered in these questions. This study summarizes the possibilities offered nowadays by commercial TPSs, highlighting the absence of some useful tools that would notably improve the planning of MR-based interstitial component cervix brachytherapy.
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Affiliation(s)
- Antonio Otal
- Medical Physics Department, Hospital Universitari Arnau de Vilanova, 25198 Lleida, Spain
- Unidad Mixta de Investigación en Radiofísica e Instrumentación Nuclear en Medicina (IRIMED), Instituto de Investigación Sanitaria La Fe (IIS-La Fe), Universitat de Valencia (UV), 46010 Valencia, Spain; (J.V.); (J.P.-C.)
- Correspondence: ; Tel.: +34-973248100
| | - Francisco Celada
- Radiotherapy Department, La Fe Hospital, 46026 Valencia, Spain; (F.C.); (M.-J.P.-C.)
| | - Jose Chimeno
- Medical Physics Department, Hospital San Juan, 03550 Alicante, Spain;
| | - Javier Vijande
- Unidad Mixta de Investigación en Radiofísica e Instrumentación Nuclear en Medicina (IRIMED), Instituto de Investigación Sanitaria La Fe (IIS-La Fe), Universitat de Valencia (UV), 46010 Valencia, Spain; (J.V.); (J.P.-C.)
- Department of Atomic, Molecular and Nuclear Physics, University of Valencia, 46010 Valencia, Spain
- Instituto de Física Corpuscular, IFIC (UV-CSIC), 46010 Valencia, Spain
| | - Santiago Pellejero
- Radiation Oncology Department, Hospital Universitario de Navarra, 31008 Navarre, Spain; (S.P.); (E.V.); (N.F.)
| | | | - Elena Villafranca
- Radiation Oncology Department, Hospital Universitario de Navarra, 31008 Navarre, Spain; (S.P.); (E.V.); (N.F.)
| | - Naiara Fuentemilla
- Radiation Oncology Department, Hospital Universitario de Navarra, 31008 Navarre, Spain; (S.P.); (E.V.); (N.F.)
| | - Francisco Blazquez
- Radiotherapy Department, Hospital Clínica Benidorm, 03501 Alicante, Spain; (F.B.); (S.R.)
| | - Silvia Rodriguez
- Radiotherapy Department, Hospital Clínica Benidorm, 03501 Alicante, Spain; (F.B.); (S.R.)
| | - Jose Perez-Calatayud
- Unidad Mixta de Investigación en Radiofísica e Instrumentación Nuclear en Medicina (IRIMED), Instituto de Investigación Sanitaria La Fe (IIS-La Fe), Universitat de Valencia (UV), 46010 Valencia, Spain; (J.V.); (J.P.-C.)
- Radiotherapy Department, La Fe Hospital, 46026 Valencia, Spain; (F.C.); (M.-J.P.-C.)
- Radiotherapy Department, Hospital Clínica Benidorm, 03501 Alicante, Spain; (F.B.); (S.R.)
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Dankulchai P, Harn-Utairasmee P, Prasartseree T, Nakkasae P, Trikhirhisthit K, Sithiwong W, Thephamongkhol K, Petsuksiri J, Apiwarodom N, Iampongpaiboon P, Chansilpa Y. Vaginal 11-point and volumetric dose related to late vaginal complications in patients with cervical cancer treated with external beam radiotherapy and image-guided adaptive brachytherapy. Radiother Oncol 2022; 174:77-86. [PMID: 35839936 DOI: 10.1016/j.radonc.2022.07.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To investigate the vaginal 11-point and volumetric dose-toxicity relationships in definitive cervical cancer radiotherapy. METHODS A retrospective cohort study of patients with cervical cancer with a complete response of at least 12 months was performed. Additional per vaginal examinations and patient-scoring questionnaires on the date of patient enrolment were assessed for vaginal strictures. Retrospective dosimetric analysis of vaginal 11-point and volumetric doses was performed with descriptive and probit analyses to investigate dose-toxicity relationships. RESULTS Ninety-seven patients were included in the study, with a 20-month median follow-up. The incidence rate of grade 3 vaginal strictures was 22.7%. A comparison between patients with grade 1-3 vaginal strictures revealed significant differences in age, stage, initial tumour size, and vaginal involvement. PIBS + 2, PIBS, PIBS-2, D + 5, and D2cc were all significantly different among grade 1-3 vaginal strictures and showed significant probit coefficients. The lateral dose points were significantly higher in grade 2 strictures, but negative probit coefficients failed to establish causal inferences. Post-estimation analyses yielded effective doses (ED) for 15% and 20% probability of grade 3 vaginal strictures (ED15 and ED20) for PIBS + 2 at 57.4 and 111 Gy3, respectively. PIBS-2 yielded an ED20 of 7 Gy3. D + 5 yielded positive ED10, ED15, and ED20 values of 52.2, 66.6, and 78 Gy3, respectively. CONCLUSIONS This study showed a significant relationship between age, tumour size, and lower-third vaginal involvement with the incidence of vaginal toxicity. The goal of a cumulative radiotherapy dose of ≤ 55 Gy3 to PIBS + 2, ≤5 Gy3 to PIBS-2, and ≤ 65 Gy3 to D + 5 points may reduce the risk of grade 3 vaginal stenosis to less than 15-20%.
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Affiliation(s)
- Pittaya Dankulchai
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand.
| | | | - Tissana Prasartseree
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
| | - Pitchayut Nakkasae
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
| | - Kyrhatii Trikhirhisthit
- Division of Radiation Oncology, Department of Radiology, Sawanpracharak Hospital, Nakhon Sawan, Thailand
| | - Wiwatchai Sithiwong
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
| | - Kullathorn Thephamongkhol
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
| | - Janjira Petsuksiri
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
| | - Nantakan Apiwarodom
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
| | - Porntip Iampongpaiboon
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
| | - Yaowalak Chansilpa
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
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Rogowski P, Rottler M, Walter F, Saicic S, Niyazi M, Well J, Nierer L, Trillsch F, Burges A, Mahner S, Belka C, Corradini S. Clinical outcome of combined intracavitary / interstitial brachytherapy using a hybrid applicator in locally advanced cervical cancer. Gynecol Oncol 2022; 166:576-581. [PMID: 35764443 DOI: 10.1016/j.ygyno.2022.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/14/2022] [Accepted: 06/20/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the clinical outcome in locally advanced cervical cancer (LACC) after image-guided adaptive brachytherapy (IGABT) with combined intracavitary and interstitial (IC/IS) techniques using the hybrid Venezia applicator (Elekta AB, Sweden). METHODS LACC patients (UICC Stage IIB - IVB) treated with radiochemotherapy followed by IGABT with the hybrid IC/IS Venezia applicator at a single institution were retrospectively analyzed. Treatment comprised EBRT of the pelvis with 45 Gy and concomitant weekly cisplatin chemotherapy (40 mg/m2) followed by MRI-based IGABT. Dosimetry, oncological outcome and toxicity were investigated. RESULTS Forty-six patients underwent a total of 184 fractions of IGABT between 2017 and 2020. Median follow-up was 24 months. Combined IC/IS techniques were used in 40 patients (87%). The median HRCTV volume was 31.2 cm3 and the median HRCTV D90% was 92.3 Gy (EQD210). The median D2cm3 was 74.8 Gy for bladder, 57.9 Gy for rectum, 60.0 Gy for sigmoid and 52.2 Gy for bowel (EQD23). The 3-yr actuarial rates were 97.6% for local control, 97.6% for pelvic control, 59.9% for distant metastasis-free survival and 81.6% for overall survival. The crude rate for G2 and G3 late toxicity was 21.7% and 4.3%. CONCLUSIONS IGABT with the hybrid Venezia applicator and a pronounced use of a combined IC/IS technique achieved high target doses, while maintaining low doses to organs at risk, leading to excellent local control and overall survival rates with acceptable toxicity.
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Affiliation(s)
- Paul Rogowski
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany.
| | - Maya Rottler
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
| | - Franziska Walter
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
| | - Stefan Saicic
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
| | - Maximilian Niyazi
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
| | - Justus Well
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
| | - Lukas Nierer
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
| | - Fabian Trillsch
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Germany
| | - Alexander Burges
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Germany
| | - Sven Mahner
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Germany
| | - Claus Belka
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany; German Cancer Consortium (DKTK), Munich, Germany
| | - Stefanie Corradini
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
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Jacobsen MC, Beriwal S, Dyer BA, Klopp AH, Lee SI, McGinnis GJ, Robbins JB, Rauch GM, Sadowski EA, Simiele SJ, Stafford RJ, Taunk NK, Yashar CM, Venkatesan AM. Contemporary image-guided cervical cancer brachytherapy: Consensus imaging recommendations from the Society of Abdominal Radiology and the American Brachytherapy Society. Brachytherapy 2022; 21:369-388. [PMID: 35725550 DOI: 10.1016/j.brachy.2022.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/15/2022] [Accepted: 04/24/2022] [Indexed: 11/02/2022]
Abstract
PURPOSE To present recommendations for the use of imaging for evaluation and procedural guidance of brachytherapy for cervical cancer patients. METHODS An expert panel comprised of members of the Society of Abdominal Radiology Uterine and Ovarian Cancer Disease Focused Panel and the American Brachytherapy Society jointly assessed the existing literature and provide data-driven guidance on imaging protocol development, interpretation, and reporting. RESULTS Image-guidance during applicator implantation reduces rates of uterine perforation by the tandem. Postimplant images may be acquired with radiography, computed tomography (CT), or magnetic resonance imaging (MRI), and CT or MRI are preferred due to a decrease in severe complications. Pre-brachytherapy T2-weighted MRI may be used as a reference for contouring the high-risk clinical target volume (HR-CTV) when CT is used for treatment planning. Reference CT and MRI protocols are provided for reference. CONCLUSIONS Image-guided brachytherapy in locally advanced cervical cancer is essential for optimal patient management. Various imaging modalities, including orthogonal radiographs, ultrasound, computed tomography, and magnetic resonance imaging, remain integral to the successful execution of image-guided brachytherapy.
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Affiliation(s)
- Megan C Jacobsen
- The University of Texas MD Anderson Cancer Center, Department of Imaging Physics, Houston, TX
| | - Sushil Beriwal
- Allegheny Health Network, Department of Radiation Oncology, Pittsburgh, PA; Varian Medical Systems, Palo Alto, CA
| | - Brandon A Dyer
- Legacy Health, Department of Radiation Oncology, Portland, OR
| | - Ann H Klopp
- The University of Texas MD Anderson Cancer Center, Department of Radiation Oncology, Houston, TX
| | - Susanna I Lee
- Massachusetts General Hospital, Department of Radiology, Boston, MA
| | - Gwendolyn J McGinnis
- The University of Texas MD Anderson Cancer Center, Department of Radiation Oncology, Houston, TX
| | | | - Gaiane M Rauch
- The University of Texas MD Anderson Cancer Center, Department of Abdominal Imaging, Houston, TX
| | | | - Samantha J Simiele
- The University of Texas MD Anderson Cancer Center, Department of Radiation Physics, Houston, TX
| | - R Jason Stafford
- The University of Texas MD Anderson Cancer Center, Department of Imaging Physics, Houston, TX
| | - Neil K Taunk
- University of Pennsylvania, Department of Radiation Oncology, Philadelphia, PA
| | - Catheryn M Yashar
- University of California San Diego, Department of Radiation Oncology, San Diego, CA
| | - Aradhana M Venkatesan
- The University of Texas MD Anderson Cancer Center, Department of Abdominal Imaging, Houston, TX.
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50
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Tang S, Rai R, Vinod SK, Elwadia D, Forstner D, Moretti D, Tran T, Do V, King O, Lim K, Liney G, Goozee G, Holloway L. Rates of MRI simulator utilisation in a tertiary cancer therapy centre. J Med Imaging Radiat Oncol 2022; 66:717-723. [PMID: 35687525 DOI: 10.1111/1754-9485.13422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 04/27/2022] [Indexed: 11/28/2022]
Abstract
Magnetic resonance imaging (MRI) is increasingly being integrated into the radiation oncology workflow, due to its improved soft tissue contrast without additional exposure to ionising radiation. A review of MRI utilisation according to evidence based departmental guidelines was performed. Guideline utilisation rates were calculated to be 50% (true utilisation rate was 46%) of all new cancer patients treated with adjuvant or curative intent, excluding simple skin and breast cancer patients. Guideline utilisation rates were highest in the lower gastrointestinal and gynaecological subsites, with the lowest being in the upper gastrointestinal and thorax subsites. Head and neck (38% vs 45%) and CNS (46% vs 67%) cancers had the largest discrepancy between true and guideline utilisation rates due to unnamed reasons and non-contemporaneous diagnostic imaging respectively. This report outlines approximate MRI utilisation rates in a tertiary radiation oncology service and may help guide planning for future departments contemplating installation of an MRI simulator.
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Affiliation(s)
- Simon Tang
- Central West Cancer, Gosford, New South Wales, Australia.,Ingham Institute of Applied Medical Research, Liverpool, New South Wales, Australia
| | - Robba Rai
- Ingham Institute of Applied Medical Research, Liverpool, New South Wales, Australia.,Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Shalini K Vinod
- Ingham Institute of Applied Medical Research, Liverpool, New South Wales, Australia.,Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Doaa Elwadia
- Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia
| | - Dion Forstner
- Genesis Care, St Vincent's Clinic, Darlinghust, New South Wales, Australia
| | - Daniel Moretti
- Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia
| | - Thomas Tran
- Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia
| | - Viet Do
- Ingham Institute of Applied Medical Research, Liverpool, New South Wales, Australia.,Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Odette King
- Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia
| | - Karen Lim
- Ingham Institute of Applied Medical Research, Liverpool, New South Wales, Australia.,Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Gary Liney
- Ingham Institute of Applied Medical Research, Liverpool, New South Wales, Australia.,Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Gary Goozee
- Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia
| | - Lois Holloway
- Ingham Institute of Applied Medical Research, Liverpool, New South Wales, Australia.,Liverpool and Macarthur Cancer Therapy Centres, Liverpool, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia.,University of Sydney, Sydney, New South Wales, Australia.,University of Wollongong, Wollongong, New South Wales, Australia
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