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Bilski M, Konat-Bąska K, Zerella MA, Corradini S, Hetnał M, Leonardi MC, Gruba M, Grzywacz A, Hatala P, Jereczek-Fossa BA, Fijuth J, Kuncman Ł. Advances in breast cancer treatment: a systematic review of preoperative stereotactic body radiotherapy (SBRT) for breast cancer. Radiat Oncol 2024; 19:103. [PMID: 39095859 PMCID: PMC11295558 DOI: 10.1186/s13014-024-02497-4] [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: 06/23/2024] [Accepted: 07/26/2024] [Indexed: 08/04/2024] Open
Abstract
Breast conserving treatment typically involves surgical excision of tumor and adjuvant radiotherapy targeting the breast area or tumor bed. Accurately defining the tumor bed is challenging and lead to irradiation of greater volume of healthy tissues. Preoperative stereotactic body radiotherapy (SBRT) which target tumor may solves that issues. We conducted a systematic literature review to evaluates the early toxicity and cosmetic outcomes of this promising treatment approach. Secondary we reviewed pathological complete response (pCR) rates, late toxicity, patient selection criteria and radiotherapy protocols. We retrieved literature from PubMed, Scopus, Web of Science, Cochrane, ScienceDirect, and ClinicalTrials.gov. The study adhered to the PRISMA 2020 guidelines. Ten prospective clinical trials (7 phase II, 3 phase I), encompassing 188 patients (aged 18-75 years, cT1-T3 cN0-N3 cM0, primarily with ER/PgR-positive, HER2-negative status,), were analyzed. Median follow-up was 15 months (range 3-30). Treatment involved single-fraction SBRT (15-21Gy) in five studies and fractionated (19.5-31.5Gy in 3 fractions) in the rest. Time interval from SBRT to surgery was 9.5 weeks (range 1-28). Acute and late G2 toxicity occurred in 0-17% and 0-19% of patients, respectively, G3 toxicity was rarely observed. The cosmetic outcome was excellent in 85-100%, fair in 0-10% and poor in only 1 patient. pCR varied, showing higher rates (up to 42%) with longer intervals between SBRT and surgery and when combined with neoadjuvant systemic therapy (up to 90%). Preoperative SBRT significantly reduce overall treatment time, enabling to minimalize volumes. Early results indicate excellent cosmetic effects and low toxicity.
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Affiliation(s)
- Mateusz Bilski
- Department of Radiotherapy, Medical University of Lublin, Lublin, Poland
- Department of Brachytherapy, Lublin Cancer Center, Lublin, Poland
- Department of Radiotherapy, Lublin Cancer Center, Lublin, Poland
| | - Katarzyna Konat-Bąska
- Department of Brachytherapy, Lower Silesian Oncology Pulmonology and Hematology Center, Wrocław, Poland
| | - Maria Alessia Zerella
- Department of Radiation Oncology, European Institute of Oncology IRCCS, 20141, Milan, Italy
| | - Stefanie Corradini
- Department of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany
| | - Marcin Hetnał
- Department of Oncology, Faculty of Medicine, Andrzej Frycz Modrzewski Krakow University, Kraków, Poland
- Amethyst Radiotherapy Centre, Ludwik Rydygier Memorial Hospital, Kraków, Poland
| | | | - Martyna Gruba
- Department of Radiotherapy, Medical University of Lublin, Lublin, Poland
| | | | - Patrycja Hatala
- Department of Radiotherapy, Medical University of Lublin, Lublin, Poland
| | - Barbara Alicja Jereczek-Fossa
- Department of Radiation Oncology, European Institute of Oncology IRCCS, 20141, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
| | - Jacek Fijuth
- Department of Radiotherapy, Medical University of Lodz, Lodz, Poland
- Department of External Beam Radiotherapy, Copernicus Memorial Hospital in Lodz Comprehensive Cancer Center and Traumatology, Pabianicka 62, 93-513, Lodz, Poland
| | - Łukasz Kuncman
- Department of Radiotherapy, Medical University of Lodz, Lodz, Poland.
- Department of External Beam Radiotherapy, Copernicus Memorial Hospital in Lodz Comprehensive Cancer Center and Traumatology, Pabianicka 62, 93-513, Lodz, Poland.
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Talapatra K, Chitkara G, Murali-Nanavati S, Gupte A, Bardeskar NS, Behal S, Shaikh M, Atluri P. Practice of Tumor Bed Boost in Patients after Oncoplastic Breast-Conserving Surgery. Indian J Surg Oncol 2024; 15:63-70. [PMID: 38511033 PMCID: PMC10948658 DOI: 10.1007/s13193-023-01824-7] [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: 07/17/2023] [Accepted: 09/26/2023] [Indexed: 03/22/2024] Open
Abstract
The practice of boost to the tumor bed after treatment with oncoplastic breast-conserving surgery (BCS) remains variable. Using a survey, the present study evaluated the current practice of tumor bed boost administered in women after oncoplastic BCS. Actively practicing radiation oncologists across India were sent a questionnaire on the practice of adjuvant whole-breast radiotherapy and tumor bed boost after oncoplastic BCS via email and encouraged to participate. Of the 54 radiation oncologists who participated, most (98.1%) used a linear accelerator for radiotherapy. Hypofractionation was preferred by 59.26%, standard fractionation by 7.41%, and the remaining selected the fractionation strategy based on various patient factors. In addition, 83.33% participants reported that they always planned tumor boost, 51.85% preferred photons for the boost, and 75.93% administered sequential boost. The most common dose for the boost was 12.5 Gy in five fractions (40.74%). Most participants (77.78%) revealed that they used a combination of methods for identifying the tumor bed. With respect to clip placement, most surgeons (96%) at the participants' centers placed ≥ 4 clips at the tumor site, with both the base and margins being preferred by surgeons (81.48%) for placement. Finally, 12.96% participants revealed that the surgeons always involved them during surgical planning, whereas 7.4% participants reported that they always included the surgeons during radiotherapy planning, suggesting that radiation oncologists and oncoplastic surgeons do not involve each other during surgical and radiotherapy planning, possibly leading to suboptimal treatment. This may be attributed to the absence of guidelines regarding boost practices after oncoplastic BCS.
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Affiliation(s)
- Kaustav Talapatra
- Nanavati Max Institute of Cancer Care, Nanavati Max Super Speciality Hospital, Mumbai, 400056 India
| | - Garvit Chitkara
- Nanavati Max Institute of Cancer Care, Nanavati Max Super Speciality Hospital, Mumbai, 400056 India
| | - Sridevi Murali-Nanavati
- Nanavati Max Institute of Cancer Care, Nanavati Max Super Speciality Hospital, Mumbai, 400056 India
| | - Ajinkya Gupte
- Nanavati Max Institute of Cancer Care, Nanavati Max Super Speciality Hospital, Mumbai, 400056 India
| | - Nikhil S. Bardeskar
- Nanavati Max Institute of Cancer Care, Nanavati Max Super Speciality Hospital, Mumbai, 400056 India
| | - Shruti Behal
- Nanavati Max Institute of Cancer Care, Nanavati Max Super Speciality Hospital, Mumbai, 400056 India
| | - Muzammil Shaikh
- Nanavati Max Institute of Cancer Care, Nanavati Max Super Speciality Hospital, Mumbai, 400056 India
| | - Pooja Atluri
- Nanavati Max Institute of Cancer Care, Nanavati Max Super Speciality Hospital, Mumbai, 400056 India
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Chang JS, Khan AJ. Accelerated Partial Breast Irradiation: Technological Advances and Current Challenges. Am J Clin Oncol 2023; 46:7-9. [PMID: 36562690 DOI: 10.1097/coc.0000000000000971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Accelerated partial breast irradiation is a mature, standard-of-care treatment option for many women with early-stage breast cancer. In this paper, we discuss technological challenges and advances in the delivery of accurate and reproducible accelerated partial breast irradiation.
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Affiliation(s)
- Jee Suk Chang
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Atif J Khan
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
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Li G. Advances and potential of optical surface imaging in radiotherapy. Phys Med Biol 2022; 67:10.1088/1361-6560/ac838f. [PMID: 35868290 PMCID: PMC10958463 DOI: 10.1088/1361-6560/ac838f] [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: 12/08/2021] [Accepted: 07/22/2022] [Indexed: 11/12/2022]
Abstract
This article reviews the recent advancements and future potential of optical surface imaging (OSI) in clinical applications as a four-dimensional (4D) imaging modality for surface-guided radiotherapy (SGRT), including OSI systems, clinical SGRT applications, and OSI-based clinical research. The OSI is a non-ionizing radiation imaging modality, offering real-time 3D surface imaging with a large field of view (FOV), suitable for in-room interactive patient setup, and real-time motion monitoring at any couch rotation during radiotherapy. So far, most clinical SGRT applications have focused on treating superficial breast cancer or deep-seated brain cancer in rigid anatomy, because the skin surface can serve as tumor surrogates in these two clinical scenarios, and the procedures for breast treatments in free-breathing (FB) or at deep-inspiration breath-hold (DIBH), and for cranial stereotactic radiosurgery (SRS) and radiotherapy (SRT) are well developed. When using the skin surface as a body-position surrogate, SGRT promises to replace the traditional tattoo/laser-based setup. However, this requires new SGRT procedures for all anatomical sites and new workflows from treatment simulation to delivery. SGRT studies in other anatomical sites have shown slightly higher accuracy and better performance than a tattoo/laser-based setup. In addition, radiographical image-guided radiotherapy (IGRT) is still necessary, especially for stereotactic body radiotherapy (SBRT). To go beyond the external body surface and infer an internal tumor motion, recent studies have shown the clinical potential of OSI-based spirometry to measure dynamic tidal volume as a tumor motion surrogate, and Cherenkov surface imaging to guide and assess treatment delivery. As OSI provides complete datasets of body position, deformation, and motion, it offers an opportunity to replace fiducial-based optical tracking systems. After all, SGRT has great potential for further clinical applications. In this review, OSI technology, applications, and potential are discussed since its first introduction to radiotherapy in 2005, including technical characterization, different commercial systems, and major clinical applications, including conventional SGRT on top of tattoo/laser-based alignment and new SGRT techniques attempting to replace tattoo/laser-based setup. The clinical research for OSI-based tumor tracking is reviewed, including OSI-based spirometry and OSI-guided tumor tracking models. Ongoing clinical research has created more SGRT opportunities for clinical applications beyond the current scope.
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Affiliation(s)
- Guang Li
- Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, United States of America
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Li G, Lu W, O'Grady K, Yan I, Yorke E, Arriba LIC, Powell S, Hong L. A uniform and versatile surface‐guided radiotherapy procedure and workflow for high‐quality breast deep‐inspiration breath‐hold treatment in a multi‐center institution. J Appl Clin Med Phys 2022; 23:e13511. [PMID: 35049108 PMCID: PMC8906224 DOI: 10.1002/acm2.13511] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 01/21/2021] [Accepted: 12/03/2021] [Indexed: 12/27/2022] Open
Abstract
Purpose We share our experiences on uniformly implementing an effective and efficient SGRT procedure with a new clinical workflow for treating breast patients in deep‐inspiration breath‐hold (DIBH) among 9 clinical centers using 26 optical surface imaging (OSI) systems. Methods Our procedures have five major components: (1) acquiring both free‐breathing (FB) and DIBH computed tomography (CT) at simulation to quantify the rise of the anterior surface, (2) defining uniformly a large region of interest (ROI) to accommodate large variations in patient anatomy and treatment techniques, (3) performing two‐step setup in FB by first aligning the arm and chin to minimize breast deformation and reproduce local lymphnode positions and then aligning the ROI, (4) aligning the vertical shift precisely from FB to DIBH, and (5) capturing a new on‐site reference image at DIBH to separate residual setup errors from the DIBH motion monitoring uncertainties. Moreover, a new clinical workflow was developed for patient data preparation using 4 OSI offline workstations without interruption of SGRT treatment at 22 OSI online workstations. This procedure/workflow is suitable for all photon planning techniques, including 2‐field, 3‐field, 4‐field, partial breast irradiation (PBI), and volumetric‐modulated arc therapy (VMAT) with or without bolus. Results Since 2019, we have developed and applied the uniform breast SGRT DIBH procedure with optimized clinical workflow and ensured treatment accuracy among the nine clinics within our institution. About 150 breast DIBH patients are treated daily and two major upgrades are achieved smoothly throughout our institution, owing to the uniform and versatile procedure, adequate staff training, and efficient workflow with effective clinical supports and backup strategies. Conclusion The uniform and versatile breast SGRT DIBH procedure and workflow have been developed to ensure smooth and optimal clinical operations, simplify clinical staff training and clinical troubleshooting, and allow high‐quality SGRT delivery in a busy multi‐center institution.
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Affiliation(s)
- Guang Li
- Department of Medical Physics Memorial Sloan Kettering Cancer Center New York New York USA
| | - Wei Lu
- Department of Medical Physics Memorial Sloan Kettering Cancer Center New York New York USA
| | - Kyle O'Grady
- Department of Medical Physics Memorial Sloan Kettering Cancer Center New York New York USA
| | - Iris Yan
- Department of Medical Physics Memorial Sloan Kettering Cancer Center New York New York USA
| | - Ellen Yorke
- Department of Medical Physics Memorial Sloan Kettering Cancer Center New York New York USA
| | - Laura I Cervino Arriba
- Department of Medical Physics Memorial Sloan Kettering Cancer Center New York New York USA
| | - Simon Powell
- Department of Radiation Oncology Memorial Sloan Kettering Cancer Center New York New York USA
| | - Linda Hong
- Department of Medical Physics Memorial Sloan Kettering Cancer Center New York New York USA
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Acree P, Kapadia A, Mahatme R, Zhang L, Patel D, Almoney C, Park G, Kofsky M, Matin S, Habibi M. Review of Current Accepted Practices in Identification of the Breast Lumpectomy Tumor Bed. Adv Radiat Oncol 2022; 7:100848. [PMID: 36148372 PMCID: PMC9486415 DOI: 10.1016/j.adro.2021.100848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 11/01/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose Of the 260,000 women diagnosed with breast cancer annually in the United States, more than 60% are treated with breast-conserving surgery or lumpectomy, followed by radiation to decrease the chance of local recurrence. More than 70% of breast cancer recurrences are localized to the original tumor cavity. Hence, targeted radiation therapy after lumpectomy is critical for recurrence prevention. With 30,000 patients annually opting for oncoplastic reconstruction of the breast after lumpectomy to improve cosmesis, the resulting tissue rearrangement increases the difficulty for radiation oncologists to accurately delineate the cavity when planning radiation therapy. Owing to the absence of a standardized protocol, it is important to assess the efficacy of various methods used to mark the tumor cavity for improved delineation. Methods and Materials A keyword search and analysis was used to compile relevant articles on PubMed (National Center for Biotechnology Information). Results Currently, a common practice for tumor cavity localization is applying titanium surgical clips to the borders of lumpectomy cavity. Tissue movement and seroma formation both impact the positioning of surgical clips within the tumor cavity and lead to significant interobserver variability. Furthermore, the main application of surgical clips is to control the small vessels during surgery, and that can create confusion when the same clips are used for tumor bed localization. All alternative solutions present more precise tumor bed delineation but possess individual concerns with workflow integration, patient comfort, and accuracy. Though liquid-based fiducials were found to be the most effective for delineating tumor cavities, there are still drawbacks for clinical use. Conclusions These findings should encourage medical innovators to develop novel techniques for tumor cavity marking to increase delineation accuracy and effectively target at-risk tissue. Future solutions in this space should consider the properties of liquid-based fiducial markers to improve radiation oncologists' ability to precisely delineate the tumor cavity.
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Sato K, Shimo T, Kato M, Natsume N, Fuchikami H, Takeda N, Okawa T. Computed tomography-guided partial-breast brachytherapy using implanted catheters as fiducial markers versus co-registered magnetic resonance imaging. Brachytherapy 2021; 20:1219-1225. [PMID: 34602344 DOI: 10.1016/j.brachy.2021.08.007] [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: 06/25/2021] [Revised: 08/15/2021] [Accepted: 08/16/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE Partial-breast irradiation (PBI) needs accurate cavity delineation with computed tomography (CT). In perioperative PBI using multicatheter-interstitial brachytherapy (MIB), catheters implanted during surgery were enabled as fiducial markers. Magnetic resonance imaging (MRI) can also assist delineation with CT. METHODS Patients receiving MIB-PBI were analyzed. Cavity visualization scores (CVSs) were categorized with CT. With catheter-based delineation (CBD), the relationship between cavity boundaries and catheters were used to contour the tumor bed. Co-registered MRI delineation (CMD) was also performed. The correlation between cavity volume and the excised tissue weight was compared for the two techniques. RESULTS The association between CVS and preoperative characteristics in 159 patients showed mammographic breast density (MBD) remained correlated to CVS on multiple regression analyses; CVS = 5.2-0.61 x MBD (p < 0.0001). In 43 patients, the cavity volumes determined with CBD vs CMD were 12.8 ± 6.4 cm3 vs 16.1 ± 12.4 cm3 (p < 0.0001), and their plots with excised weights showed the best fitting lines were 0.29 vs 0.48 (p < 0.0001), respectively. The correlation coefficients for CBD vs CMD were 0.65 vs 0.55 (p = 0.20) in low (CVS 1-3, n = 27) and 0.72 vs 0.58 (p = 0.36) in high visualized cavities (CVS 4-5, n = 16), respectively. CONCLUSIONS The use of implanted catheters as fiducial markers was associated with smaller cavities and greater correlations with the excised tissue weights than co-registration with MRI. This might be a useful technique, especially for patients with dense breasts on mammography.
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Affiliation(s)
- Kazuhiko Sato
- Department of Breast Oncology, Tokyo-West Tokushukai Hospital, Akishima, Tokyo, Japan.
| | - Takahiro Shimo
- Department of Radiation Oncology, Tokyo-West Tokushukai Hospital, Akishima, Tokyo, Japan
| | - Masahiro Kato
- Department of Radiation Oncology, Tokyo-West Tokushukai Hospital, Akishima, Tokyo, Japan
| | - Nana Natsume
- Department of Radiation Oncology, Tokyo-West Tokushukai Hospital, Akishima, Tokyo, Japan
| | - Hiromi Fuchikami
- Department of Breast Oncology, Tokyo-West Tokushukai Hospital, Akishima, Tokyo, Japan
| | - Naoko Takeda
- Department of Breast Oncology, Tokyo-West Tokushukai Hospital, Akishima, Tokyo, Japan
| | - Tomohiko Okawa
- Preventive Medical Center, Sano City Hospital, Sano, Tochigi, Japan
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Bourgier C, Cowen D, Castan F, Lemanski C, Gourgou S, Rivera S, Labib A, Peignaux K, Blanc-Onfroy ML, Benyoucef A, Mege A, Douadi-Gaci Z, Racadot S, Latorzeff I, Schick U, Jacquot S, Massabeau C, Guilbert P, Geffrelot J, Ellis S, Lecouillard I, Breton-Callu C, Richard-Tallet A, Boulbair F, Cretin J, Belkacémi Y, Bons F, Azria D, Fenoglietto P. Quality assurance program and early toxicities in the phase III BONBIS randomized trial evaluating the role of a localized radiation boost in ductal carcinoma in situ. Radiother Oncol 2021; 164:57-65. [PMID: 34571090 DOI: 10.1016/j.radonc.2021.09.014] [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: 02/08/2021] [Revised: 09/15/2021] [Accepted: 09/19/2021] [Indexed: 11/26/2022]
Abstract
PURPOSE To describe the quality assurance (QA) program and early toxicities in the phase III randomized trial BONBIS (NCT00907868) on the role of a localized radiation boost in ductal carcinoma in situ (DCIS). MATERIALS AND METHODS From November 2008 to July 2014, 2004 patients were randomized in arm A (only whole breast radiotherapy, WBRT) and arm B (WBRT + boost). The QA program involved 44 participant centers that performed the dummy run (DR). Compliance and uniformity of clinical target volume (CTV) delineations, and dose prescription and delivery according to the BONBIS trial radiotherapy guidelines were analyzed. Acute toxicities (during and up to 3 months after radiotherapy completion, NCI-CTCAE v3.0 classification) were evaluated in 1929 patients. RESULTS The differences in whole breast CTV (CTV1) and planning target volume (PTV1) were ≤10%, and the differences in boost CTV (CTV2) and PTV (PTV2) were ≥20% compared with the reference DR values; 95% of the prescribed dose encompassed 98.7% and 100% of the median CTV1 and CTV2. Grade ≥2 breast erythema (38.3% vs. 22.4% of grade 2 and 5.4% vs. 2.1% of grade 3, p < 0.001), grade ≥2 dermatitis (2.8% vs. 0.7%, p < 0.001), and grade 2 hyperpigmentation (6.9% vs. 3.6%, p = 0.005) were more frequent in arm B than arm A. No acute lung or cardiac toxicity was observed. Smoking history, large breast size, and large breast CTV were strong predictive factors of grade ≥2 acute skin toxicities. CONCLUSIONS The QA program showed deviations in breast and tumor bed delineation. The boost significantly increased acute skin toxicities.
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Affiliation(s)
- Celine Bourgier
- Univ Montpellier, Montpellier, France; Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, Montpellier, France; Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Didier Cowen
- Aix Marseille Univ, APHM, Hôpital Timone-Hôpital Nord, Département de Radiothérapie, Marseille, France
| | - Florence Castan
- Unité de Biométrie, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Claire Lemanski
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, Montpellier, France; Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Sophie Gourgou
- Unité de Biométrie, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Sofia Rivera
- Gustave Roussy, Département d'oncologie radiothérapie, Villejuif, France; Université Paris-Saclay, Inserm, U1030, Villejuif, France
| | | | - Karine Peignaux
- Département d'Oncologie Radiothérapie Centre Georges-François LECLERC, Dijon, France
| | | | - Ahmed Benyoucef
- Département de Radiothérapie et de Physique médicale, Centre Henri Becquerel, Rouen, France
| | - Alice Mege
- Sainte Catherine, Institut du Cancer Avignon-Provence, Avignon, France
| | | | | | - Igor Latorzeff
- Département de radiothérapie-oncologie, Clinique Pasteur, Toulouse, France
| | - Ulrike Schick
- Department of Radiation Oncology, University Hospital of Brest, UBO, LaTIM UMR 1101, Brest, France
| | - Stephane Jacquot
- Centre de Cancerologie du Grand Montpellier, Montpellier, France
| | - Carole Massabeau
- Département de Radiotherapie, Institut Claudius Regaud IUCT-O, Toulouse, France
| | | | - Julien Geffrelot
- Service de Radiothérapie, Centre François Baclesse, Caen, France
| | - Stephen Ellis
- Service de Radiothérapie, Centre Catalan d'Oncologie, Perpignan, France
| | | | | | - Agnès Richard-Tallet
- Institut Paoli-Calmettes, département d'Oncologie Radiothérapie, Marseille, France; Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM UMR 1068, Marseille, France
| | | | | | - Yazid Belkacémi
- Department of Radiation Oncology and Henri Mondor Breast Center, AP HP - Henri Mondor University Hospital, University of Paris-Est (UPEC), INSERM Unit 955, Team 21-IMRB, Creteil, France
| | - Françoise Bons
- Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France; Service de Radiothérapie, CHU Nîmes, France
| | - David Azria
- Univ Montpellier, Montpellier, France; Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, Montpellier, France; Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Pascal Fenoglietto
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, Montpellier, France; Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France
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Kazemimoghadam M, Chi W, Rahimi A, Kim N, Alluri P, Nwachukwu C, Lu W, Gu X. Saliency-guided deep learning network for automatic tumor bed volume delineation in post-operative breast irradiation. Phys Med Biol 2021; 66:10.1088/1361-6560/ac176d. [PMID: 34298539 PMCID: PMC8639319 DOI: 10.1088/1361-6560/ac176d] [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: 04/22/2021] [Accepted: 07/23/2021] [Indexed: 11/12/2022]
Abstract
Efficient, reliable and reproducible target volume delineation is a key step in the effective planning of breast radiotherapy. However, post-operative breast target delineation is challenging as the contrast between the tumor bed volume (TBV) and normal breast tissue is relatively low in CT images. In this study, we propose to mimic the marker-guidance procedure in manual target delineation. We developed a saliency-based deep learning segmentation (SDL-Seg) algorithm for accurate TBV segmentation in post-operative breast irradiation. The SDL-Seg algorithm incorporates saliency information in the form of markers' location cues into a U-Net model. The design forces the model to encode the location-related features, which underscores regions with high saliency levels and suppresses low saliency regions. The saliency maps were generated by identifying markers on CT images. Markers' location were then converted to probability maps using a distance transformation coupled with a Gaussian filter. Subsequently, the CT images and the corresponding saliency maps formed a multi-channel input for the SDL-Seg network. Our in-house dataset was comprised of 145 prone CT images from 29 post-operative breast cancer patients, who received 5-fraction partial breast irradiation (PBI) regimen on GammaPod. The 29 patients were randomly split into training (19), validation (5) and test (5) sets. The performance of the proposed method was compared against basic U-Net. Our model achieved mean (standard deviation) of 76.4(±2.7) %, 6.76(±1.83) mm, and 1.9(±0.66) mm for Dice similarity coefficient, 95 percentile Hausdorff distance, and average symmetric surface distance respectively on the test set with computation time of below 11 seconds per one CT volume. SDL-Seg showed superior performance relative to basic U-Net for all the evaluation metrics while preserving low computation cost. The findings demonstrate that SDL-Seg is a promising approach for improving the efficiency and accuracy of the on-line treatment planning procedure of PBI, such as GammaPod based PBI.
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Affiliation(s)
- Mahdieh Kazemimoghadam
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Weicheng Chi
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
- School of Software Engineering, South China University of Technology, Guangzhou, Guangdong 510006, People's Republic of China
| | - Asal Rahimi
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Nathan Kim
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Prasanna Alluri
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Chika Nwachukwu
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | | | - Xuejun Gu
- Stanford University, Palo Alto, CA, United States of America
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10
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Meattini I, Becherini C, Bernini M, Bonzano E, Criscitiello C, De Rose F, De Santis MC, Fontana A, Franco P, Gentilini OD, Livi L, Meduri B, Parisi S, Pasinetti N, Prisco A, Rocco N. Breast reconstruction and radiation therapy: An Italian expert Delphi consensus statements and critical review. Cancer Treat Rev 2021; 99:102236. [PMID: 34126314 DOI: 10.1016/j.ctrv.2021.102236] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/21/2021] [Accepted: 05/24/2021] [Indexed: 02/06/2023]
Abstract
Breast conserving surgery (BCS) plus radiation therapy (RT) or mastectomy have shown comparable oncological outcomes in early-stage breast cancer and are considered standard of care treatments. Postmastectomy radiation therapy (PMRT) targeted to both the chest wall and regional lymph nodes is recommended in high-risk patients. Oncoplastic breast conserving surgery (OBCS) represents a significant recent improvement in breast surgery. Nevertheless, it represents a challenge for radiation oncologists as it triggers different decision-making strategies related to treatment volume definition and target delineation. Hence, the choice of the best combination and timing when offering RT to breast cancer patients who underwent or are planned to undergo reconstruction procedures should be carefully evaluated and based on individual considerations. We present an Italian expert Delphi Consensus statements and critical review, led by a core group of all the professional profiles involved in the management of breast cancer patients undergoing reconstructive procedures and RT. The report was structured as to consider the main recommendations on breast reconstruction and RT and analyse the current open issues deserving investigation and consensus. We used a three key-phases and a Delphi process. The final expert panel of 40 colleagues selected key topics as identified by the core group of the project. A final consensus on 26 key statements on RT and breast reconstruction after three rounds of the Delphi voting process and harmonisation was reached. An accompanying critical review of available literature was summarized. A clear communication and cooperation between surgeon and radiation oncologist is of paramount relevance both in the setting of breast reconstruction following mastectomy when PMRT is planned and when extensive glandular rearrangements as OBCS is performed. A shared-decision making, relying on outcome-based and patient-centred considerations, is essential, while waiting for higher level-of-evidence data.
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Affiliation(s)
- Icro Meattini
- Department of Experimental and Clinical Biomedical Sciences "M. Serio", University of Florence, Florence, Italy; Radiation Oncology Unit - Oncology Department, Azienda Ospedaliero Universitaria Careggi, Florence, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy; Clinical Oncology Breast Cancer Group (COBCG), Italy.
| | - Carlotta Becherini
- Department of Experimental and Clinical Biomedical Sciences "M. Serio", University of Florence, Florence, Italy; Radiation Oncology Unit - Oncology Department, Azienda Ospedaliero Universitaria Careggi, Florence, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy
| | - Marco Bernini
- Breast Surgery Unit - Oncology Department, Azienda Ospedaliero Universitaria Careggi, Florence, Italy
| | - Elisabetta Bonzano
- Department of Radiation Oncology, IRCCS San Matteo Polyclinic Foundation & PhD School in Experimental Medicine, University of Pavia, Pavia, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy; Clinical Oncology Breast Cancer Group (COBCG), Italy
| | - Carmen Criscitiello
- Department of Oncology and Haematology (DIPO), University of Milan & Division of Early Drug Development for Innovative Therapy, European Institute of Oncology, IRCCS, Milan, Italy
| | - Fiorenza De Rose
- Division of Radiation Oncology, Santa Chiara Hospital, Trento, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy; Clinical Oncology Breast Cancer Group (COBCG), Italy
| | - Maria Carmen De Santis
- Radiation Oncology Unit 1, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy; Clinical Oncology Breast Cancer Group (COBCG), Italy
| | - Antonella Fontana
- Radiation Oncology Unit, Ospedale Santa Maria Goretti, Latina, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy
| | - Pierfrancesco Franco
- Department of Translational Medicine, University of Eastern Piedmont & Radiation Oncology Unit, AOU "Maggiore della Carità", Novara, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy; Clinical Oncology Breast Cancer Group (COBCG), Italy
| | | | - Lorenzo Livi
- Department of Experimental and Clinical Biomedical Sciences "M. Serio", University of Florence, Florence, Italy; Radiation Oncology Unit - Oncology Department, Azienda Ospedaliero Universitaria Careggi, Florence, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy
| | - Bruno Meduri
- Radiation Oncology Unit, University Hospital of Modena, Modena, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy; Clinical Oncology Breast Cancer Group (COBCG), Italy
| | - Silvana Parisi
- Radiation Oncology Unit, Department of Biomedical, Dental Science and Morphological and Functional Images, University of Messina, Messina, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy
| | - Nadia Pasinetti
- Radiation Oncology Service, ASST Valcamonica, Esine, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy; Clinical Oncology Breast Cancer Group (COBCG), Italy
| | - Agnese Prisco
- Department of Radiation Oncology, University Hospital of Udine, ASUFC, Udine, Italy; Italian Association of Radiotherapy and Clinical Oncology (AIRO) Breast Cancer Group, Italy
| | - Nicola Rocco
- Group for Reconstructive and Therapeutic Advancements (G.RE.T.A.), Milan, Naples, Catania, Italy
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11
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Zhao C, Li J, Wang W, Gong G, Xu L, Zhang Y, Li F, Shao Q, Wang J, Liu X, Xu M. DE-MR simulation imaging for prone radiotherapy after breast-conserving surgery: assessing its application in lumpectomy cavity delineation based on deformable image registration. Radiat Oncol 2021; 16:91. [PMID: 34001182 PMCID: PMC8130288 DOI: 10.1186/s13014-021-01817-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/05/2021] [Indexed: 11/10/2022] Open
Abstract
Background The application of delayed-enhancement magnetic resonance (DE-MR) simulation imaging in lumpectomy cavity (LC) delineation for prone radiotherapy in patients with an invisible seroma or a low seroma clarity score (SCS) after breast-conserving surgery (BCS) based on deformable image registration (DIR) was assessed. Methods Twenty-six patients who were suitable for radiotherapy in prone positions after BCS were enrolled, and both computed tomography (CT) and DE-MR simulation scans were acquired. The LC delineated based on titanium surgical clips on CT images was denoted as LCCT. The LC delineated based on the signal of cavity boundaries on fat-suppressed T2-weighted imaging (T2WI) and multiphase delayed-enhancement T1-weighted imaging (DE-T1WI), which was performed at 2 min, 5 min and 10 min postinjection, were denoted as LCT2, LC2T1, LC5T1 and LC10T1, respectively. Afterwards, DIR was performed to compare the volumes and locations of the LCs with MIM software. The generalized conformity index (CIgen) of inter (intra) observer (Inter-CIgen and Intra-CIgen) was also used to explore the inter(intra) observer variation for LC delineation on each image modality. Results LCCT–LC10T1 provided the best conformal index (CI) and degree of inclusion (DI), increasing by 2.08% and 4.48% compared to LCCT–LCT2, 11.36% and 2.94% for LCCT–LC2T1, and 8.89% and 7.69% for LC5T1–LCCT, respectively. The center of mass (COM) of LCCT–LC10T1 decreased by 17.86%, 6.12% and 13.21% compared with that of LCCT–LCT2, LCCT–LC2T1 and LCCT–LC5T1, respectively. The agreement of LC delineation was strongest for 10th min DE-TIWI (coefficient of variation, COV = 2.30%, Inter-CIgen = 87.06%, Intra-CIgen = 92.64%). Conclusion For patients with a low SCS (SCS ≤ 2) after BCS, it is feasible to contour the LC based on prone DE-MR simulation images. Furthermore, the LC derived from prone DE-T1WI at 10 min was found to be most similar to that derived from prone CT simulation scans using titanium surgical clips regardless of the volume and location of the LC. Inter (intra) variability was minimal for the delineation of the LC based on 10th min DE-TIWI.
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Affiliation(s)
- Changhui Zhao
- School of Medicine, Shandong University, Jinan, 250012, Shandong Province, China
| | - Jianbin Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China.
| | - Wei Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China.
| | - Guanzhong Gong
- Department of Medical Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, Shandong Province, China
| | - Liang Xu
- Department of Medical Imagings, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, China
| | - Yingjie Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Fengxiang Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Qian Shao
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Jinzhi Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Xijun Liu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Min Xu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
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12
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Lee G, Tsui H, Koch CA, Fyles A. Are we missing the post-operative cavity in whole breast radiotherapy? J Med Imaging Radiat Sci 2021; 52:207-213. [PMID: 33926849 DOI: 10.1016/j.jmir.2021.03.003] [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: 02/05/2021] [Revised: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND/PURPOSE Whole breast radiotherapy (RT) following breast-conserving surgery is a standard treatment option in early-stage breast cancer patients. The whole breast RT technique targets the entire breast, traditionally identified based on breast palpation and the lumpectomy scar. The aim of this study is to evaluate dosimetry of the tumour bed (cavity) and location of recurrence in women treated with breast radiotherapy without explicit cavity delineation. MATERIALS/METHODS 50 consecutive women previously treated with whole breast RT were retrospectively contoured to define the post-operative cavity with a 1.0 cm expansion for planning target volume (cPTV). The cavity and cPTV dosimetric coverage [volume receiving 92%(V92%) and 95%(V95%) prescription] were calculated. Cavity and cPTV location were classified as inside, at edge or outside of previous treatment fields and recurrence rates were collected. RESULTS Forty-five (90%) women had cavities located inside the previous treatment fields (CAVin) and 5 women (10%) had cavities located outside(4) or at edge(1) of previous fields (CAVout/edge). CAVout/edge were located in extreme aspects of the breast: lateral(3); medial(1); or superior(1). Mean cavity_V92% was 91.6% vs 98.5% for CAVout/edge vs CAVin (p = 0.042). Mean cPTV_V92% was 78.7% vs 97.2% for cPTVout/edge vs cPTVin (p<0.001). At 5-year follow-up, 20% (1/5) of the CAVout/edge had 1 in-breast recurrence near the cavity (at previous field edge). Within the CAVin cohort, 11 patients were lost to follow-up and 6% (2/34) patients had in-breast recurrence. CONCLUSIONS In patients treated with whole breast RT without cavity delineation, 10% did not have ideal dosimetric coverage of the cavity. Cavity delineation in treatment planning provides optimal tumour bed coverage for patients undergoing whole breast RT, and is of particular importance for the coverage of cavities located in the extreme margins of the breast.
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Affiliation(s)
- Grace Lee
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada.
| | - Hugh Tsui
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada
| | - C Anne Koch
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Anthony Fyles
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
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13
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Steybe D, Russe MF, Ludwig U, Sprave T, Vach K, Semper-Hogg W, Schmelzeisen R, Voss PJ, Poxleitner P. Intraoperative marking of the tumour resection surface for improved radiation therapy planning in head and neck cancer: preclinical evaluation of a novel liquid fiducial marker. Dentomaxillofac Radiol 2021; 50:20200290. [PMID: 32915672 DOI: 10.1259/dmfr.20200290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE To evaluate a novel liquid fiducial marker for intraoperative marking of the tumour resection surface in oral cancer patients to facilitate precise postoperative delineation of the interface between the tumour resection border and reconstructed tissue for intensity-modulated radiation therapy. METHODS A total of 200 markers were created by injecting the volumes of 10 µl, 20 µl, 30 µl, 40 µl and 50 µl of a liquid marker composed of sucrose acetoisobutyrate (SAIB) and iodinated sucrose acetoisobutyrate (x-SAIB) into the soft tissue of porcine mandible segments. Visibility of the resulting markers was quantified by threshold-based segmentation of the marker volume in CT- and CBCT imaging and by a comparison of signal intensities in MRI. RESULTS Even the lowest volume of SAIB-/x-SAIB investigated (10 µl) resulted in a higher visibility (CTSoft tissue: 88.18 ± 13.23 µl; CTBone: 49.55 ± 7.62 µl; CBCT: 54.65 ± 12.58 µl) than observed with the incorporation of titanium ligature clips (CTSoft tissue: 50.15 ± 7.50 mm3; CTBone: 23.90 ± 3.39 mm3; CBCT: 33.80 ± 9.20 mm3). Markers created by the injection of 10 µl and 20 µl could reliably be delineated from markers created by the injection of higher volumes. CONCLUSION SAIB/x-SAIB, which has recently become available as a Conformité Européenne (CE)-marked fiducial marker, provides an option for fast and reliable production of markers with excellent visibility in imaging modalities used in oral cancer radiation therapy (RT) planning routine.
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Affiliation(s)
- David Steybe
- Department of Oral and Maxillofacial Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Maximilian Frederik Russe
- Department of Diagnostic and Interventional Radiology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ute Ludwig
- Medical Physics, Department of Radiology, Faculty of Medicine, Medical Center - University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Tanja Sprave
- Department of Radiation Oncology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Kirstin Vach
- Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center - University of Freiburg, Freiburg, Germany
| | - Wiebke Semper-Hogg
- Department of Oral and Maxillofacial Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Rainer Schmelzeisen
- Department of Oral and Maxillofacial Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Pit Jacob Voss
- Department of Oral and Maxillofacial Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Philipp Poxleitner
- Department of Oral and Maxillofacial Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Berta-Ottenstein-Programme for Clinician Scientists, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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14
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Stereotactic body radiotherapy in Cyberknife® for partial breast irradiation: a review. JOURNAL OF RADIOTHERAPY IN PRACTICE 2021. [DOI: 10.1017/s146039692000120x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Abstract
Introduction:
Partial breast irradiation (PBI) can reduce the volume of treatment and number of treatment sessions in low-risk breast cancer patients. Stereotactic body radiotherapy (SBRT) allows the administration of high doses per fraction thereby reducing the number of fractions and reducing the dose to the surrounding tissues. The objective of this study is to review the literature on the use of SBRT in PBI using the Cyberknife® (CK) unit.
Material and methods:
In this review, we analysed the literature in PubMed and MEDLINE with articles published in the last 10 years. All citations were evaluated for relevant content and validity.
Results:
We include articles in the English language with information about PBI, SBRT in PBI, the use of the CK unit in PBI and other applications of SBRT in breast carcinoma. A total of 68 articles were found and 28 articles were selected for inclusion in this review.
Conclusions:
The treatment of PBI using the CK unit has clear advantages in reducing the treatment volume, and therefore theoretically reducing side effects and good cosmetic results with adequate tumour control. However, the placement of fiducial markers is necessary, requiring an adequate learning curve for the placement of the markers and longer treatment times.
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15
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Vasmel JE, Groot Koerkamp ML, Kirby AM, Russell NS, Shaitelman SF, Vesprini D, Anandadas CN, Currey A, Keller BM, Braunstein LZ, Han K, Kotte ANTJ, de Waard SN, Philippens MEP, Houweling AC, Verkooijen HM, van den Bongard HJGD. Consensus on Contouring Primary Breast Tumors on MRI in the Setting of Neoadjuvant Partial Breast Irradiation in Trials. Pract Radiat Oncol 2020; 10:e466-e474. [PMID: 32315784 DOI: 10.1016/j.prro.2020.03.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/11/2020] [Accepted: 03/16/2020] [Indexed: 11/17/2022]
Abstract
PURPOSE Our purpose was to present and evaluate expert consensus on contouring primary breast tumors on magnetic resonance imaging (MRI) in the setting of neoadjuvant partial breast irradiation in trials. METHODS AND MATERIALS Expert consensus on contouring guidelines for target definition of primary breast tumors on contrast-enhanced MRI in trials was developed by an international team of experienced breast radiation oncologists and a dedicated breast radiologist during 3 meetings. At the first meeting, draft guidelines were developed through discussing and contouring 2 cases. At the second meeting 6 breast radiation oncologists delineated gross tumor volume (GTV) in 10 patients with early-stage breast cancer (cT1N0) according to draft guidelines. GTV was expanded isotropically (20 mm) to generate clinical target volume (CTV), excluding skin and chest wall. Delineations were reviewed for disagreement and guidelines were clarified accordingly. At the third meeting 5 radiation oncologists redelineated 6 cases using consensus-based guidelines. Interobserver variation of GTV and CTV was assessed using generalized conformity index (CI). CI was calculated as the sum of volumes each pair of observers agreed upon, divided by the sum of encompassing volumes for each pair of observers. RESULTS For the 2 delineation sessions combined, mean GTV ranged between 0.19 and 2.44 cm3, CI for GTV ranged between 0.28 and 0.77, and CI for CTV between 0.77 and 0.94. The largest interobserver variation in GTV delineations was observed in cases with extended tumor spiculae, blood vessels near or markers within the tumor, or with increased enhancement of glandular breast tissue. Consensus-based guidelines stated to delineate all visible tumors on contrast enhanced-MRI scan 1 to 2 minutes after contrast injection and if a marker was inserted in the tumor to include this. CONCLUSIONS Expert-based consensus on contouring primary breast tumors on MRI in trials has been reached. This resulted in low interobserver variation for CTV in the context of a uniform 20 mm GTV to CTV expansion margin.
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Affiliation(s)
- Jeanine E Vasmel
- Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, the Netherlands.
| | | | - Anna M Kirby
- Royal Marsden NHS Foundation Trust/The Institute of Cancer Research, Sutton, England, United Kingdom
| | - Nicola S Russell
- Department of Radiation Oncology, AVL/NKI, Amsterdam, the Netherlands
| | - Simona F Shaitelman
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Danny Vesprini
- Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | | | - Adam Currey
- Department of Radiation Oncology, Medical College of Wisconsin, Wauwatosa, Wisconsin
| | - Brian M Keller
- Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | | | - Kathy Han
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Alexis N T J Kotte
- Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Stephanie N de Waard
- Department of Radiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Marielle E P Philippens
- Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Antonetta C Houweling
- Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Helena M Verkooijen
- Imaging Division, University Medical Center Utrecht, Utrecht, the Netherlands; Utrecht University, Utrecht, The Netherlands
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16
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Kumar A, Wadasadawala T, Joshi K, Pathak R, Scaria L, Upreti RR, Bhajbhuje R, Shet T, Parmar V, Gupta S, Mokal S, Sarin R. What is the dosimetric impact of isotropic vs anisotropic safety margins for delineation of the clinical target volume in breast brachytherapy? Brachytherapy 2020; 20:155-162. [PMID: 32888852 DOI: 10.1016/j.brachy.2020.06.019] [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: 05/19/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE The purpose of the study was to report dosimetric differences for breast brachytherapy plans optimized for clinical target volume (CTV) generated using conventional isotropic expansion of tumor bed volume (TBV) and Groupe Européen de Curiethérapie-European Society for Radiotherapy and Oncology (GEC-ESTRO) recommendations to expand the TBV anisotropically to achieve a total safety margin of 2 cm (resection margin size + added safety margin). METHODS Institutional records of 100 patients who underwent accelerated partial breast irradiation using multicatheter interstitial brachytherapy from May 2015 to March 2020 were reviewed retrospectively. Two sets of CT-based plans were made, one with 1-cm isotropic margins around the tumor bed (CTV_ISO) and the other with anisotropic margins (CTV_GEC). Plans were evaluated and compared using the American Brachytherapy Society and GEC-ESTRO guidelines. RESULTS The median TBV was 36.97 cc. The median margin widths were as follows: anterior 1.2, posterior 1.0, superior 1.0, inferior 0.9, medial 1.2, and lateral 1.2 cm. The mean tumor bed coverage index was 0.94; 0.93 [p.066], the CTV coverage index 0.86; 0.84 [p 0.001], the dose homogeneity index (DHI) 0.77; 0.75 [p < 0.001] and the conformity index 0.66; 0.64 [p < 0.001] in CTV_ISO and CTV_GEC plans, respectively. In smaller volume implants (TBV< 35 cc), the DHI was 0.76; 0.75 [p 0.008] and the conformity index was 0.66; 0.62 [p < 0.001], whereas in larger volumes >35 cc, the CTV coverage index was 0.86; 0.84 [p 0.003] and the DHI 0.78; 0.76 [p 0.001] in CTV_ISO and CTV_GEC plans, respectively. CONCLUSIONS In this cohort of patients who underwent accelerated partial breast irradiation, plans with anisotropic margins had lower conformity, the impact of which was predominantly seen in smaller implants. Rest of the dosimetric constraints were achieved in both the plans as per the American Brachytherapy Society and GEC-ESTRO guidelines.
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Affiliation(s)
- Anuj Kumar
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Tabassum Wadasadawala
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India.
| | - Kishore Joshi
- Department of Medical Physics, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Rima Pathak
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Libin Scaria
- Department of Medical Physics, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Ritu Raj Upreti
- Department of Medical Physics, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Rajesh Bhajbhuje
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Tanuja Shet
- Department of Pathology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Vani Parmar
- Department of Surgical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Sudeep Gupta
- Department of Medical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Smruti Mokal
- Department of Biostatistics, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Navi Mumbai, India
| | - Rajiv Sarin
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
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17
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Mitchell S, Lee H, DuPree BB, Beyer DC, Ulissey M, Grobmyer SR, Gass J, Boolbol S, Storm-Dickerson T. A novel, adaptable, radiographically opaque, multi-plane continuous filament marker for optimizing tissue identification, radiation planning, and radiographic follow-up. Gland Surg 2020; 8:609-617. [PMID: 32042667 DOI: 10.21037/gs.2019.10.03] [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: 11/06/2022]
Abstract
Background In breast cancer treatment, marking the tumor bed is an important aspect of the surgical component of therapy. Clear delineation of the tumor bed allows radiation oncologists a defined target for planning and delivering postoperative radiation therapy (XRT). Tumor bed marking also allows radiographic follow-up of the tumor bed on subsequent breast imaging. The aim of this assessment is to evaluate the ease and feasibility of utilizing a tumor bed filament marker (VeraFormÒ, Videra Surgical inc., USA) as a marker in post-operative benign surgical sites and malignant breast surgical tumor beds in breast cancer surgery. Methods The filament marker is a novel radiopaque surgical filament that in lieu of clips and other markers is implanted in the surgical tumor bed during breast surgery. Following development of the filament marker, the researchers used breast phantoms and radiographic images to develop a series of geometric patterns of placement options that optimize comprehensive multi-plane radiographic interpretation of the exact tumor bed or surgical margin. Three breast surgeons at 3 separate institutions then used this filament as a continuous multi-plane marker in 20 patients during breast conservation surgery. In these patients, the filament marker was thus used to mark the tumor bed (breast cancer surgery) or surgical site (benign breast disease) instead of the more traditional devices such as clips or other metallic open framework devices. We then assessed 2 important factors related to this device; (I) the ease, feasibility, and accuracy of in vivo placement with oncoplastic and non-oncoplastic breast conservation surgery techniques; (II) the radiographic footprint this device left on standard imaging protocols of post-operative mammogram (MMG), computed tomography (CT) scan, breast magnetic resonance imaging (MRI) examinations, and ultrasounds (USs) for both routine follow-up imaging and for standard radiation planning. Results There were no adverse events reported with the use of this device. The cases were then reviewed by a multidisciplinary team that included the original surgeon, a breast radiologist, and radiation oncologist. Their unanimous evaluation was that the filament marker clearly delineated all sides and planes of the tumor bed (cancer surgery) or surgical site (benign disease). Regardless of surgical technique utilized, this information provided precise 3D guidance for radiation planning and delivery as well as radiographic follow-up. The surgeons involved reported that delineating the bed with the filament marker was a quick and easy procedure and did not interfere with performing the planned surgical technique. Radiologists, surgeons, and radiation oncologists found that the filament marker was not only radiographically opaque on CT and MMG, but also caused no significant artifact on CT, MRI, US, or MMG. Conclusions The continuous multi-plane filament marker is a new device that fulfills the heretofore unmet need for safe and improved tumor bed and tissue site marking. It is an easy to place, non-palpable continuous multi-plane radiographic opaque tissue marker that seems to better delineate the tumor bed, regardless of type of breast surgery performed, while providing a more accurate 3D image for radiation planning and radiographic follow-up on MMG MRI, CT and US.
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Affiliation(s)
- Sunny Mitchell
- Department of Surgery, Montefiore Nyack Hospital, Nyack, NY, USA
| | - Henry Lee
- Department of Radiation Oncology; New York Presbyterian-Lawrence Hospital, Columbia University College of Physicians & Surgeons, Bronxville, NY, USA
| | - Beth Baughman DuPree
- Sedona Breast care, Department of Surgery, Cancer Centers of Northern Arizona Healthcare, Sedona, AZ, USA
| | - David C Beyer
- Department of Radiation Oncology, Cancer Centers of Northern Arizona Healthcare, Sedona, AZ, USA
| | - Michael Ulissey
- Department of Radiology, The University of Texas Health Sciences Center, San Antonio, TX, USA
| | - Stephen R Grobmyer
- Oncology Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Jennifer Gass
- Department of Surgery, Women & Infants Hospital, Brown University, Providence, RI, USA
| | - Susan Boolbol
- Department of Surgery, Mount Sinai Beth Israel, Icahn School of Medicine, New York, NY, USA
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Frederick A, Roumeliotis M, Grendarova P, Craighead P, Abedin T, Watt E, Olivotto IA, Meyer T, Quirk S. A Framework for Clinical Validation of Automatic Contour Propagation: Standardizing Geometric and Dosimetric Evaluation. Pract Radiat Oncol 2019; 9:448-455. [DOI: 10.1016/j.prro.2019.06.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 06/11/2019] [Accepted: 06/25/2019] [Indexed: 10/26/2022]
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Catheter-based delineation of lumpectomy cavity for accurate target definition in partial-breast irradiation with multicatheter interstitial brachytherapy. J Contemp Brachytherapy 2019; 11:108-115. [PMID: 31139218 PMCID: PMC6536147 DOI: 10.5114/jcb.2019.84504] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 03/03/2019] [Indexed: 11/17/2022] Open
Abstract
Purpose In partial-breast irradiation (PBI), accurate lumpectomy cavity (LC) delineation is critical. Seroma-based delineation (SBD) using computed tomography (CT) with clips remains uncertain, causing an expansion of the LC and planning target volume (PTV). In catheter-based delineation (CBD), the implanted catheters were used as reference markers for LC delineation in multicatheter interstitial brachytherapy (MIB). Material and methods Between October 2008 and October 2018, 513 patients who underwent MIB-PBI were examined. In CBD, anatomical relations of LC to catheters were recorded. In randomly selected 22 CBD cases, the LC volume and PTV were retrospectively recontoured on SBD, and the relationship between the contribution of CBD and cavity visuality was evaluated. The LC volume and PTV before and after the introduction of CBD were compared. Results The mean LC volumes based on SBD and CBD were 19.1 cm3 and 14.1 cm3, respectively (p < 0.001). The mean PTVs based on SBD and CBD were 47.9 cm3 and 35.7 cm3, respectively (p < 0.0001). More reductions in the LC volume (5.1 cm3) (p < 0.05) and PTV (7.7 cm3) (p = 0.13) were observed in the poorly visible LC than in the visible LC. The LC volume and PTV before the introduction of CBD (n = 411) were compared with those after introduction (n = 102). Significant reductions were observed in the LC volume (5.9 cm3) (p < 0.0001) after the introduction of CBD; moreover, PTV tended to be reduced (3.9 cm3) (p = 0.17). Conclusions CBD may help to establish the standardized procedure for MIB-PBI and prevent unnecessary radiation exposure to the normal breast tissue.
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Mouawad M, Biernaski H, Brackstone M, Lock M, Yaremko B, Sexton T, Yu E, Dinniwell RE, Lynn K, Hajdok G, Prato FS, Thompson RT, Gelman N, Gaede S. Reducing the dose of gadolinium-based contrast agents for DCE-MRI guided SBRT: The effects on inter and intra observer variability for preoperative target volume delineation in early stage breast cancer patients. Radiother Oncol 2019; 131:60-65. [PMID: 30773188 DOI: 10.1016/j.radonc.2018.11.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 10/26/2018] [Accepted: 11/29/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND PURPOSE This study aimed to determine the effects of reducing the dose of contrast agent (CA) in a DCE-MRI scan on inter- and intra-observer variability in the context of MRI-guided target volume delineation for stereotactic body radiation therapy of early stage breast cancer patients. This is in hopes of reducing risks to patients due to findings of residual CA in brain and bone. MATERIALS AND METHODS Twenty-three patients receiving neoadjuvant radiation therapy were enrolled. Five observers delineated the gross target volume (GTV) using DCE-MRI for guidance. 14/23 patients received the full clinical dose of CA and 9/23 received half. Clinical target volumes (CTV) were created through a 0.5 cm uniform expansion. Several metrics were used to quantify the inter and intra-observer reliability including differences in delineation volume and the reliability coefficient. RESULTS There were no significant differences in the volume, though half contrast patients had a lower median for both the GTV and CTV (difference of 0.26 cm3 and 1.27 cm3, respectively). All indicated a high degree of agreement between and within observers for both dose groups. However, the full dose group had a greater inter-observer variability, most likely due to the full CA causing more pronounced enhancement in the periphery. CONCLUSIONS Reducing the dose of contrast agent did not significantly alter inter- or intra-observer variability. These results have prompted our centre to reduce the dose of gadolinium in all patients enrolled in the SIGNAL trial.
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Affiliation(s)
| | | | - Muriel Brackstone
- Medical Biophysics, Western University, London, Canada; Lawson Health Research Institute, London, Canada; London Health Sciences Centre, London, Canada; Department of Oncology, Western University, London, Canada.
| | - Michael Lock
- London Health Sciences Centre, London, Canada; Department of Oncology, Western University, London, Canada.
| | - Brian Yaremko
- London Health Sciences Centre, London, Canada; Department of Oncology, Western University, London, Canada.
| | - Tracy Sexton
- London Health Sciences Centre, London, Canada; Department of Oncology, Western University, London, Canada.
| | - Edward Yu
- London Health Sciences Centre, London, Canada; Department of Oncology, Western University, London, Canada.
| | - Robert E Dinniwell
- London Health Sciences Centre, London, Canada; Department of Oncology, Western University, London, Canada.
| | - Kalan Lynn
- London Health Sciences Centre, London, Canada.
| | | | - Frank S Prato
- Medical Biophysics, Western University, London, Canada; Lawson Health Research Institute, London, Canada.
| | - Robert Terry Thompson
- Medical Biophysics, Western University, London, Canada; Lawson Health Research Institute, London, Canada.
| | - Neil Gelman
- Medical Biophysics, Western University, London, Canada; Lawson Health Research Institute, London, Canada.
| | - Stewart Gaede
- Medical Biophysics, Western University, London, Canada; Lawson Health Research Institute, London, Canada; London Health Sciences Centre, London, Canada.
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Struik GM, Hoekstra N, Klem TM, Ghandi A, Verduijn GM, Swaak-Kragten AT, Schoonbeek A, de Vries KC, Sattler MA, Verhoef K, Birnie E, Pignol JP. Injection of radiopaque hydrogel at time of lumpectomy improves the target definition for adjuvant radiotherapy. Radiother Oncol 2018; 131:8-13. [PMID: 30773191 DOI: 10.1016/j.radonc.2018.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 10/14/2018] [Accepted: 11/04/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND PURPOSE During oncoplastic breast-conserving surgery (BCS), the surgical cavity is closed to reduce seroma formation. This makes the radiotherapy target definition using clips challenging, leading to poor inter-observer agreement and potentially geographical misses. We hypothesize that injecting a radiopaque hydrogel in the lumpectomy cavity before closure improves radiotherapy target definition and agreement between observers. MATERIALS AND METHODS Women undergoing BCS in a single university hospital were prospectively accrued in the study. Three to 9 ml of iodined PolyEthylene Glycol (PEG) hydrogel and clips were inserted in the lumpectomy cavity. A CT-scan was performed at 4 to 6 weeks. CT images of BCS patients with standard clips only were used as control group, matched on age, specimen weight, and distance between clips. Six radiation oncologists delineated the tumor bed volumes and rated the cavity visualization scores (CVS). The primary endpoint was the agreement between observers measured using a Conformity Index (Cx). RESULTS Forty-two patients were included, 21 hydrogel procedures and 21 controls, resulting in 315 observer pairs. The feasibility of the intervention was 100%. The median Cx was higher in the intervention group (Cx = 0.70, IQR [0.54-0.79]) than in the control group (Cx = 0.54, IQR [0.42-0.66]), p < 0.00, as were the CVS (3.5 [2.5-4.5] versus 2.5 [2-3.5], p < 0.001). The rate of surgical site infections was similar to literature. CONCLUSIONS The use of radiopaque PEG enables to identify the lumpectomy cavity, resulting in a high inter-observer agreement for radiotherapy target definition. This intervention is easy to perform and blend well into current practice.
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Affiliation(s)
- Gerson M Struik
- Franciscus Gasthuis and Vlietland, Department of Surgery, Rotterdam, the Netherlands; Erasmus MC, Department of Radiation Oncology, Rotterdam, the Netherlands
| | - Nienke Hoekstra
- Erasmus MC, Department of Radiation Oncology, Rotterdam, the Netherlands
| | - Taco M Klem
- Franciscus Gasthuis and Vlietland, Department of Surgery, Rotterdam, the Netherlands
| | - Ali Ghandi
- Franciscus Gasthuis and Vlietland, Department of Radiology, Rotterdam, the Netherlands
| | - Gerda M Verduijn
- Erasmus MC, Department of Radiation Oncology, Rotterdam, the Netherlands
| | | | - Alja Schoonbeek
- Erasmus MC, Department of Radiation Oncology, Rotterdam, the Netherlands
| | - Kim C de Vries
- Erasmus MC, Department of Radiation Oncology, Rotterdam, the Netherlands
| | - Margriet A Sattler
- Erasmus MC, Department of Radiation Oncology, Rotterdam, the Netherlands
| | - Kees Verhoef
- Erasmus MC, Department of Surgery, Rotterdam, the Netherlands
| | - Erwin Birnie
- Franciscus Gasthuis and Vlietland, Department of Statistics and Education, Rotterdam, the Netherlands
| | - Jean-Philippe Pignol
- Erasmus MC, Department of Radiation Oncology, Rotterdam, the Netherlands; Dalhousie University, Department of Radiation Oncology, Halifax, Canada.
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Lightowlers SV, Boersma LJ, Fourquet A, Kirova YM, Offersen BV, Poortmans P, Scholten AN, Somaiah N, Coles CE. Preoperative breast radiation therapy: Indications and perspectives. Eur J Cancer 2017; 82:184-192. [PMID: 28692950 DOI: 10.1016/j.ejca.2017.06.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 05/25/2017] [Accepted: 06/11/2017] [Indexed: 10/19/2022]
Abstract
Preoperative breast radiation therapy (RT) is not a new concept, but older studies failed to change practice. More recently, there has been interest in revisiting preoperative RT using modern techniques. This current perspective discusses the indications, summarises the published literature and then highlights current clinical trials, with particular attention to combining with novel drugs and optimising associated translational research.
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Affiliation(s)
- S V Lightowlers
- Oncology Centre, Cambridge University Hospitals NHS Foundation Trust, United Kingdom.
| | - L J Boersma
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - A Fourquet
- Department of Radiation Oncology, Institut Curie, Paris, France
| | - Y M Kirova
- Department of Radiation Oncology, Institut Curie, Paris, France
| | - B V Offersen
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - P Poortmans
- Department of Radiation Oncology, Institut Curie, Paris, France
| | - A N Scholten
- Department of Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - N Somaiah
- The Institute of Cancer Research, London, United Kingdom
| | - C E Coles
- Oncology Centre, University of Cambridge, United Kingdom
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Kawamura M, Maeda Y, Yamamoto K, Takamatsu S, Sato Y, Minami H, Saga Y, Kume K, Tameshige Y, Sasaki M, Tamamura H, Ohta K, Itoh Y, Naganawa S. Development of the breast immobilization system in prone setup: The effect of bra in prone position to improve the breast setup error. J Appl Clin Med Phys 2017; 18:155-160. [PMID: 28594079 PMCID: PMC5875815 DOI: 10.1002/acm2.12116] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 03/24/2017] [Accepted: 04/17/2017] [Indexed: 11/10/2022] Open
Abstract
Purpose/objective(s) Accurate and reproducible positioning of the breast is difficult due to its deformability and softness; thus, targeting a breast tumor or tumor bed with fractionated radiotherapy using external beam radiation is difficult. The aim of this study was to develop a novel bra to aid in breast immobilization in the prone position. Materials & methods To assess the accuracy of prone position fixation of breast tumors, 33 breast cancer patients with 34 lesions were recruited. The bra used in this verification was customized from a commercially available bra. Duplicate MRI were acquired in the prone position, alternating with and without the bra, and for each series, patients were asked to step off the MRI table and re‐set up in the prone position. Patients were also asked to remove and re‐fit the bra for the second MRI. Each pair of images were superimposed to match the shape of the skin surface, and the maximum difference in tumor geometric center in three axes was measured. The required set up margin was calculated as: required margin = mean difference in geometric center + 2.5 standard deviation. The volumetric overlap of the tumor, as well as contouring uncertainties, was evaluated using contour analysis software. Results The median breast size was 498 cc. The required margins for the lateral, vertical, and longitudinal directions were estimated to be 4.1, 4.1, and 5.0 mm, respectively, with the bra, and 5.1, 6.9, and 6.7 mm, respectively, without the bra. These margins covered the dislocation of more than 33 lesions in total. With the bra, 33 lesions had achieved an objective overlap of 95% and 99% with 2 and 4 mm margins, respectively, whereas 4 and 8 mm, respectively, were needed without the bra. Conclusion The use of an immobilizing bra reduced the setup margin for prone position fixation of breast tumors.
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Affiliation(s)
- Mariko Kawamura
- Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yoshikazu Maeda
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | | | - Shigeyuki Takamatsu
- Department of Radiotherapy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Yoshitaka Sato
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Hiroki Minami
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Yusuke Saga
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Kyo Kume
- Research and Development Division, The Wakasa Wan Energy Research Center, Fukui, Japan
| | - Yuji Tameshige
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Makoto Sasaki
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | | | - Kouji Ohta
- Department of Surgery, Fukui Prefectural Hospital, Fukui, Japan
| | - Yoshiyuki Itoh
- Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Shinji Naganawa
- Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Al-Hammadi N, Caparrotti P, Divakar S, Riyas M, Chandramouli SH, Hammoud R, Hayes J, Mc Garry M, Paloor SP, Petric P. MRI Reduces Variation of Contouring for Boost Clinical Target Volume in Breast Cancer Patients Without Surgical Clips in the Tumour Bed. Radiol Oncol 2017; 51:160-168. [PMID: 28740451 PMCID: PMC5514656 DOI: 10.1515/raon-2017-0014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 02/19/2017] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Omitting the placement of clips inside tumour bed during breast cancer surgery poses a challenge for delineation of lumpectomy cavity clinical target volume (CTVLC). We aimed to quantify inter-observer variation and accuracy for CT- and MRI-based segmentation of CTVLC in patients without clips. PATIENTS AND METHODS CT- and MRI-simulator images of 12 breast cancer patients, treated by breast conserving surgery and radiotherapy, were included in this study. Five radiation oncologists recorded the cavity visualization score (CVS) and delineated CTVLC on both modalities. Expert-consensus (EC) contours were delineated by a senior radiation oncologist, respecting opinions of all observers. Inter-observer volumetric variation and generalized conformity index (CIgen) were calculated. Deviations from EC contour were quantified by the accuracy index (AI) and inter-delineation distances (IDD). RESULTS Mean CVS was 3.88 +/- 0.99 and 3.05 +/- 1.07 for MRI and CT, respectively (p = 0.001). Mean volumes of CTVLC were similar: 154 +/- 26 cm3 on CT and 152 +/- 19 cm3 on MRI. Mean CIgen and AI were superior for MRI when compared with CT (CIgen: 0.74 +/- 0.07 vs. 0.67 +/- 0.12, p = 0.007; AI: 0.81 +/- 0.04 vs. 0.76 +/- 0.07; p = 0.004). CIgen and AI increased with increasing CVS. Mean IDD was 3 mm +/- 1.5 mm and 3.6 mm +/- 2.3 mm for MRI and CT, respectively (p = 0.017). CONCLUSIONS When compared with CT, MRI improved visualization of post-lumpectomy changes, reduced interobserver variation and improved the accuracy of CTVLC contouring in patients without clips in the tumour bed. Further studies with bigger sample sizes are needed to confirm our findings.
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Affiliation(s)
- Noora Al-Hammadi
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Palmira Caparrotti
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Saju Divakar
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Mohamed Riyas
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Suparna Halsnad Chandramouli
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Rabih Hammoud
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Jillian Hayes
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Maeve Mc Garry
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Satheesh Prasad Paloor
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Primoz Petric
- Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
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Interobserver variations of target volume delineation and its impact on irradiated volume in accelerated partial breast irradiation with intraoperative interstitial breast implant. J Contemp Brachytherapy 2017; 9:139-145. [PMID: 28533802 PMCID: PMC5437076 DOI: 10.5114/jcb.2017.66027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 01/09/2017] [Indexed: 11/23/2022] Open
Abstract
Purpose To investigate the interobserver variations in delineation of lumpectomy cavity (LC) and clinical target volume (CTV), and its impact on irradiated volume in accelerated partial breast irradiation using intraoperative multicatheter brachytherapy. Material and methods Delineation of LC and CTV was done by five radiation oncologists on planning computed tomography (CT) scans of 20 patients with intraoperative interstitial breast implant. Cavity visualization index (CVI), four-point index ranging from (0 = poor) to (3 = excellent) was created and assigned by observers for each patient. In total, 200 contours for all observers and 100 treatment plans were evaluated. Spatial concordance (conformity index, CIcommon, and CIgen), average shift in the center of mass (COM), and ratio of maximum and minimum volumes (Vmax/Vmin) of LC and CTV were quantified among all observers and statistically analyzed. Variation in active dwell positions (0.5 cm step) for each catheter, total reference air kerma (TRAK), volume enclosed by prescription isodose (V100%) among observers and its spatial concordance were analyzed. Results The mean ± SD CIcommon of LC and CTV was 0.54 ± 0.09, and 0.58 ± 0.08, respectively. Conformity index tends to increase, shift in COM and Vmax/Vmin decrease significantly (p < 0.05), as CVI increased. Out of total 309 catheters, 29.8% catheters had no change, 29.8% and 17.5% catheters had variations of 1 and 2 dwell positions (0.5 cm and 1 cm), respectively. 9.3% catheters shown variations ≥ 10 dwell positions (5 cm). The mean ± SD CIcommon of V100% was 0.75 ± 0.11. The mean observed Vmax/Vmin of prescription isodose and TRAK was 1.18 (range, 1.03 to 1.56) and 1.11 (range, 1.03 to 1.35), respectively. Conclusions Interobserver variability in delineation of target volume was found to be significantly related to CVI. Smaller variability was observed with excellent visualization of LC. Interobserver variations showed dosimetric impact on irradiation of breast tissue volume with prescription dose.
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Zhang A, Li J, Wang W, Wang Y, Mu D, Chen Z, Shao Q, Li F. A comparison study between gross tumor volumes defined by preoperative magnetic resonance imaging, postoperative specimens, and tumor bed for radiotherapy after breast-conserving surgery. Medicine (Baltimore) 2017; 96:e5839. [PMID: 28079816 PMCID: PMC5266178 DOI: 10.1097/md.0000000000005839] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND The identification and contouring of target volume is important for breast-conserving therapy. The aim of the study was to compare preoperative magnetic resonance imaging (MRI), postoperative pathology, excised specimens' (ES) size, and tumor bed (TB) delineation as methods for determining the gross tumor volume (GTV) for radiotherapy after breast-conserving surgery (BCS). METHODS Thirty-three patients with breast cancer who underwent preoperative MRI and radiotherapy after BCS were enrolled. The GTVs determined by MRI, pathology, and the ES were defined as GTVMRI, GTVPAT, and GTVES, respectively. GTVMRI+1 was defined as a 1.0-cm margin around the GTVMRI. The radiation oncologist delineated GTV of the TB (GTVTB) using planning computed tomography according to ≥5 surgical clips placed in the lumpectomy cavity (LC). RESULTS The median GTVMRI, GTVMRI+1, GTVPAT, GTVES, and GTVTB were 0.97 cm (range, 0.01-6.88), 12.58 cm (range, 3.90-34.13), 0.97 cm (range, 0.01-6.36), 15.46 cm (range, 1.15-70.69), and 19.24 cm (range, 4.72-54.33), respectively. There were no significant differences between GTVMRI and GTVPAT, GTVMRI+1 and GTVES, GTVES and GTVTB (P = 0.188, 0.070, and 0.264, respectively). GTVMRI is positively related with GTVPAT. However, neither GTVES nor GTVTB correlated with GTVMRI (P = 0.071 and 0.378, respectively). Furthermore, neither GTVES nor GTVTB correlated with GTVMRI+1 (P = 0.068 and 0.375, respectively). CONCLUSION When ≥5 surgical clips were placed in the LC for BCS, the volume of TB was consistent with the volume of ES. Neither the volume of TB nor the volume of ES correlated significantly with the volume of tumor defined by preoperative MRI.
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Affiliation(s)
- Aiping Zhang
- Medicine and Life Sciences College of Shandong Academy of Medical Sciences, Jinan University
- Department of Radiation Oncology
| | | | - Wei Wang
- Department of Radiation Oncology
| | | | | | - Zhaoqiu Chen
- Department of Radiology, Shandong Cancer Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
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Accelerated partial breast irradiation with external beam radiotherapy. Strahlenther Onkol 2016; 193:55-61. [DOI: 10.1007/s00066-016-1066-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 10/06/2016] [Indexed: 10/20/2022]
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Chand-Fouché ME, Lam Cham Kee D, Gautier M, Hannoun-Levi JM. Technique d’irradiation partielle du sein : radiothérapie externe et curiethérapie. Cancer Radiother 2016; 20:587-94. [DOI: 10.1016/j.canrad.2016.07.087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 07/12/2016] [Accepted: 07/19/2016] [Indexed: 10/21/2022]
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Ultrasound-Guided Placement of Gold Fiducial Markers for Stereotactic Partial-Breast Irradiation. AJR Am J Roentgenol 2016; 207:685-8. [DOI: 10.2214/ajr.15.14771] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Major T, Gutiérrez C, Guix B, van Limbergen E, Strnad V, Polgár C. Recommendations from GEC ESTRO Breast Cancer Working Group (II): Target definition and target delineation for accelerated or boost partial breast irradiation using multicatheter interstitial brachytherapy after breast conserving open cavity surgery. Radiother Oncol 2016; 118:199-204. [PMID: 26776444 DOI: 10.1016/j.radonc.2015.12.006] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 12/18/2015] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To prepare guidelines for target definition and delineations after open cavity breast conserving surgery in accelerated partial breast irradiations or boost treatments using multicatheter interstitial brachytherapy based on the consensus of the Breast Working Group of GEC-ESTRO. METHOD Following a study on interobserver variations of target volume delineation in multicatheter breast brachytherapy after open cavity surgery and a number of discussions in consensus meetings these guidelines were worked out by experts on the field. PROPOSED RECOMMENDATIONS (1) Consistent windowing has to be used for proper cavity visualization. (2) The cavity visualization score has to be at least 3 in order to minimize the interobserver variations of target definition. (3) At delineation of surgical cavity only the homogeneous part of the postoperative seroma has to be included in the contours and protrusions or sharp irregularities have to be excluded. When surgical clips are present, they have to be surrounded by the contour with close contact. (4) CTV is created from the outlined surgical cavity with a nonisotropic geometrical extension. In each direction the safety margin is calculated by taking into account the size of the free resection margin. The total size of safety margin is always 20mm which is the sum of the surgical and added safety margins. CTV is limited to chest wall/pectoral muscles and 5mm below the skin surface. CONCLUSION Following these guidelines the target volume definition in breast brachytherapy after open cavity surgery is expected to be accomplished in more consistent way with low interobserver variations.
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Affiliation(s)
- Tibor Major
- Radiotherapy Centre, National Institute of Oncology, Budapest, Hungary
| | - Cristina Gutiérrez
- Department of Radiation Oncology, Catalan Institute of Oncology, Barcelona, Spain
| | - Benjamin Guix
- Radiation Oncology, Institute IMOR, Barcelona, Spain
| | - Erik van Limbergen
- Department of Radiotherapy, University Hospital Gasthuisberg, Leuven, Belgium
| | - Vratislav Strnad
- Department of Radiation Oncology, University Hospital Erlangen, Germany
| | - Csaba Polgár
- Radiotherapy Centre, National Institute of Oncology, Budapest, Hungary
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Bittermann G, Ermer M, Voss P, Duttenhoefer F, Zimmerer R, Schmelzeisen R, Metzger MC. Comparison of virtual and titanium clip marking of tumour resection margins for improved radiation planning in head and neck cancer surgery. Int J Oral Maxillofac Surg 2015; 44:1468-73. [PMID: 26265065 DOI: 10.1016/j.ijom.2015.07.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 06/09/2015] [Accepted: 07/16/2015] [Indexed: 11/30/2022]
Affiliation(s)
- G Bittermann
- Department of Oral and Maxillofacial Surgery, University Medical Centre Freiburg, Freiburg, Germany.
| | - M Ermer
- Department of Oral and Maxillofacial Surgery, University Medical Centre Freiburg, Freiburg, Germany
| | - P Voss
- Department of Oral and Maxillofacial Surgery, University Medical Centre Freiburg, Freiburg, Germany
| | - F Duttenhoefer
- Department of Oral and Maxillofacial Surgery, University Medical Centre Freiburg, Freiburg, Germany
| | - R Zimmerer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - R Schmelzeisen
- Department of Oral and Maxillofacial Surgery, University Medical Centre Freiburg, Freiburg, Germany
| | - M C Metzger
- Department of Oral and Maxillofacial Surgery, University Medical Centre Freiburg, Freiburg, Germany
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Abstract
The use of magnetic resonance imaging (MRI) in radiotherapy (RT) planning is rapidly expanding. We review the wide range of image contrast mechanisms available to MRI and the way they are exploited for RT planning. However a number of challenges are also considered: the requirements that MR images are acquired in the RT treatment position, that they are geometrically accurate, that effects of patient motion during the scan are minimized, that tissue markers are clearly demonstrated, that an estimate of electron density can be obtained. These issues are discussed in detail, prior to the consideration of a number of specific clinical applications. This is followed by a brief discussion on the development of real-time MRI-guided RT.
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Affiliation(s)
- Maria A Schmidt
- Cancer Research UK Cancer Imaging Centre, Royal Marsden Hospital and the Institute of Cancer Research, Downs Road, Sutton, Surrey, SM2 5PT, UK
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Interobserver variations of target volume delineation in multicatheter partial breast brachytherapy after open cavity surgery. Brachytherapy 2015. [DOI: 10.1016/j.brachy.2015.06.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Trajectory Modulated Arc Therapy: A Fully Dynamic Delivery With Synchronized Couch and Gantry Motion Significantly Improves Dosimetric Indices Correlated With Poor Cosmesis in Accelerated Partial Breast Irradiation. Int J Radiat Oncol Biol Phys 2015; 92:1148-1156. [DOI: 10.1016/j.ijrobp.2015.04.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 04/14/2015] [Accepted: 04/21/2015] [Indexed: 11/23/2022]
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Bittermann G, Voss P, Duttenhoefer F, Zimmerer R, Vach K, Metzger MC. The validity of surgical clips as radiographic markers for the tumour resection cavity in head and neck cancer treatment. J Craniomaxillofac Surg 2015; 43:758-62. [DOI: 10.1016/j.jcms.2015.04.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 03/24/2015] [Accepted: 04/02/2015] [Indexed: 11/16/2022] Open
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Bittermann G, Wiedenmann N, Bunea A, Schwarz SJ, Grosu AL, Schmelzeisen R, Metzger MC. Clipping of tumour resection margins allows accurate target volume delineation in head and neck cancer adjuvant radiation therapy. Radiother Oncol 2015; 116:82-6. [DOI: 10.1016/j.radonc.2015.04.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 04/30/2015] [Accepted: 04/30/2015] [Indexed: 10/23/2022]
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Recommendations from GEC ESTRO Breast Cancer Working Group (I): Target definition and target delineation for accelerated or boost Partial Breast Irradiation using multicatheter interstitial brachytherapy after breast conserving closed cavity surgery. Radiother Oncol 2015; 115:342-8. [DOI: 10.1016/j.radonc.2015.06.010] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/08/2015] [Accepted: 06/08/2015] [Indexed: 11/18/2022]
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Marking of tumor resection borders for improved radiation planning facilitates reduction of radiation dose to free flap reconstruction in head and neck cancer surgery. J Craniomaxillofac Surg 2015; 43:567-73. [DOI: 10.1016/j.jcms.2015.02.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 02/25/2015] [Accepted: 02/27/2015] [Indexed: 01/22/2023] Open
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Guo B, Li J, Wang W, Xu M, Shao Q, Zhang Y, Liang C, Guo Y. Interobserver variability in the delineation of the tumour bed using seroma and surgical clips based on 4DCT scan for external-beam partial breast irradiation. Radiat Oncol 2015; 10:66. [PMID: 25889620 PMCID: PMC4363049 DOI: 10.1186/s13014-015-0370-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 02/25/2015] [Indexed: 11/30/2022] Open
Abstract
Background To explore the interobserver variability in the delineation of the tumour bed using seroma and surgical clips based on the four-dimensional computed tomography (4DCT) scan for external-beam partial breast irradiation (EB-PBI) during free breathing. Methods Patients with a seroma clarity score (SCS) 3 ~ 5 and ≥5 surgical clips in the lumpectomy cavity after breast-conserving surgery who were recruited for EB-PBI underwent 4DCT simulation. Based on the ten sets of 4DCT images acquired, the tumour bed formed using the clips, the seroma, and both the clips and seroma (defined as TBC, TBS and TBC+S, respectively) were delineated by five radiation oncologists using specific guidelines. The following parameters were calculated to analyse interobserver variability: volume of the tumour bed (TBC, TBS, TBC+S), coefficient of variation (COVC, COVS, COVC+S), and matching degree (MDC, MDS, MDC+S). Results The interobserver variability for TBC and TBC+S and for COVC and COVC+S were statistically significant (p = 0.021, 0.008, 0.002, 0.015). No significant difference was observed for TBS and COVS (p = 0.867, 0.061). Significant differences in interobserver variability were observed for MDC vs MDS, MDC vs MDC+S, MDS vs MDC+S (p = 0.000, 0.032, 0.008), the interobserver variability of MDS was smaller than that of MDC and MDC+S (MDS > MDC+S > MDC). Conclusions When the SCS was 3 ~ 5 points and the number of surgical clips was ≥5, interobserver variability was minimal for the delineation of the tumour bed based on seroma.
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Affiliation(s)
- Bing Guo
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China. .,Medicine and Life Sciences College of Shandong Academy of Medical Sciences, Jinan University, Jinan, Shandong Province, People's Republic of China.
| | - Jianbin Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Wei Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Min Xu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Qian Shao
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Yingjie Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Chaoqian Liang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Yanluan Guo
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China. .,Medicine and Life Sciences College of Shandong Academy of Medical Sciences, Jinan University, Jinan, Shandong Province, People's Republic of China.
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Fekete G, Újhidy D, Együd Z, Kiscsatári L, Marosi G, Kahán Z, Varga Z. Partial breast radiotherapy with simple teletherapy techniques. Med Dosim 2015; 40:290-5. [DOI: 10.1016/j.meddos.2015.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 02/16/2015] [Accepted: 03/19/2015] [Indexed: 01/13/2023]
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Ippolito E, Trodella L, Silipigni S, D'Angelillo R, Di Donato A, Fiore M, Grasso A, Angelini E, Ramella S, Altomare V. Estimating the Value of Surgical Clips for Target Volume Delineation in External Beam Partial Breast Radiotherapy. Clin Oncol (R Coll Radiol) 2014; 26:677-83. [DOI: 10.1016/j.clon.2014.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 07/15/2014] [Accepted: 07/21/2014] [Indexed: 11/25/2022]
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Fahimian B, Yu V, Horst K, Xing L, Hristov D. Trajectory modulated prone breast irradiation: A LINAC-based technique combining intensity modulated delivery and motion of the couch. Radiother Oncol 2013; 109:475-81. [DOI: 10.1016/j.radonc.2013.10.031] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 10/16/2013] [Accepted: 10/19/2013] [Indexed: 10/26/2022]
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