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Torelli N, Bicker Y, Marc L, Fabiano S, Unkelbach J. A new approach to combined proton-photon therapy for metastatic cancer patients. Phys Med Biol 2024; 69:145008. [PMID: 38942008 DOI: 10.1088/1361-6560/ad5d48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 06/28/2024] [Indexed: 06/30/2024]
Abstract
Objective.Proton therapy is a limited resource and is typically not available to metastatic cancer patients. Combined proton-photon therapy (CPPT), where most fractions are delivered with photons and only few with protons, represents an approach to distribute proton resources over a larger patient population. In this study, we consider stereotactic radiotherapy of multiple brain or liver metastases, and develop an approach to optimally take advantage of a single proton fraction by optimizing the proton and photon dose contributions to each individual metastasis.Approach.CPPT treatments must balance two competing goals: (1) deliver a larger dose in the proton fractions to reduce integral dose, and (2) fractionate the dose in the normal tissue between metastases, which requires using the photon fractions. Such CPPT treatments are generated by simultaneously optimizing intensity modulated proton therapy (IMPT) and intensity modulated radiotherapy (IMRT) plans based on their cumulative biologically effective dose (BEDα/β). The dose contributions of the proton and photon fractions to each individual metastasis are handled as additional optimization variables in the optimization problem. The method is demonstrated for two patients with 29 and 30 brain metastases, and two patients with 4 and 3 liver metastases.Main results.Optimized CPPT plans increase the proton dose contribution to most of the metastases, while using photons to fractionate the dose around metastases which are large or located close to critical structures. On average, the optimized CPPT plans reduce the mean brain BED2by 29% and the mean liver BED4by 42% compared to IMRT-only plans. Thereby, the CPPT plans approach the dosimetric quality of IMPT-only plans, for which the mean brain BED2and mean liver BED4are reduced by 28% and 58%, respectively, compared to IMRT-only plans.Significance.CPPT with optimized proton and photon dose contributions to individual metastases may benefit selected metastatic cancer patients without tying up major proton resources.
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Affiliation(s)
- Nathan Torelli
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Yves Bicker
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Louise Marc
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Silvia Fabiano
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Jan Unkelbach
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
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Xu D, Miao X, Liu H, Scholey JE, Yang W, Feng M, Ohliger M, Lin H, Lao Y, Yang Y, Sheng K. Paired conditional generative adversarial network for highly accelerated liver 4D MRI. Phys Med Biol 2024; 69:10.1088/1361-6560/ad5489. [PMID: 38838679 PMCID: PMC11212820 DOI: 10.1088/1361-6560/ad5489] [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: 01/11/2024] [Accepted: 06/05/2024] [Indexed: 06/07/2024]
Abstract
Purpose.4D MRI with high spatiotemporal resolution is desired for image-guided liver radiotherapy. Acquiring densely sampling k-space data is time-consuming. Accelerated acquisition with sparse samples is desirable but often causes degraded image quality or long reconstruction time. We propose the Reconstruct Paired Conditional Generative Adversarial Network (Re-Con-GAN) to shorten the 4D MRI reconstruction time while maintaining the reconstruction quality.Methods.Patients who underwent free-breathing liver 4D MRI were included in the study. Fully- and retrospectively under-sampled data at 3, 6 and 10 times (3×, 6× and 10×) were first reconstructed using the nuFFT algorithm. Re-Con-GAN then trained input and output in pairs. Three types of networks, ResNet9, UNet and reconstruction swin transformer (RST), were explored as generators. PatchGAN was selected as the discriminator. Re-Con-GAN processed the data (3D +t) as temporal slices (2D +t). A total of 48 patients with 12 332 temporal slices were split into training (37 patients with 10 721 slices) and test (11 patients with 1611 slices). Compressed sensing (CS) reconstruction with spatiotemporal sparsity constraint was used as a benchmark. Reconstructed image quality was further evaluated with a liver gross tumor volume (GTV) localization task using Mask-RCNN trained from a separate 3D static liver MRI dataset (70 patients; 103 GTV contours).Results.Re-Con-GAN consistently achieved comparable/better PSNR, SSIM, and RMSE scores compared to CS/UNet models. The inference time of Re-Con-GAN, UNet and CS are 0.15, 0.16, and 120 s. The GTV detection task showed that Re-Con-GAN and CS, compared to UNet, better improved the dice score (3× Re-Con-GAN 80.98%; 3× CS 80.74%; 3× UNet 79.88%) of unprocessed under-sampled images (3× 69.61%).Conclusion.A generative network with adversarial training is proposed with promising and efficient reconstruction results demonstrated on an in-house dataset. The rapid and qualitative reconstruction of 4D liver MR has the potential to facilitate online adaptive MR-guided radiotherapy for liver cancer.
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Affiliation(s)
- Di Xu
- Department of Radiation Oncology, University of California, San Francisco
| | | | - Hengjie Liu
- Department of Radiation Oncology, University of California, Los Angeles
| | - Jessica E. Scholey
- Department of Radiation Oncology, University of California, San Francisco
| | - Wensha Yang
- Department of Radiation Oncology, University of California, San Francisco
| | - Mary Feng
- Department of Radiation Oncology, University of California, San Francisco
| | - Michael Ohliger
- Department of Radiology and Biomedical Engineering, University of California, San Francisco
| | - Hui Lin
- Department of Radiation Oncology, University of California, San Francisco
| | - Yi Lao
- Department of Radiation Oncology, University of California, Los Angeles
| | - Yang Yang
- Department of Radiology and Biomedical Engineering, University of California, San Francisco
| | - Ke Sheng
- Department of Radiation Oncology, University of California, San Francisco
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Yang P, Shan J, Ge X, Zhou Q, Ding M, Niu T, Du J. Prediction of SBRT response in liver cancer by combining original and delta cone-beam CT radiomics: a pilot study. Phys Eng Sci Med 2024; 47:295-307. [PMID: 38165634 DOI: 10.1007/s13246-023-01366-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 12/06/2023] [Indexed: 01/04/2024]
Abstract
This study aims to explore the feasibility of utilizing a combination of original and delta cone-beam CT (CBCT) radiomics for predicting treatment response in liver tumors undergoing stereotactic body radiation therapy (SBRT). A total of 49 patients are included in this study, with 36 receiving 5-fraction SBRT, 3 receiving 4-fraction SBRT, and 10 receiving 3-fraction SBRT. The CBCT and planning CT images from liver cancer patients who underwent SBRT are collected to extract overall 547 radiomics features. The CBCT features which are reproducible and interchangeable with pCT are selected for modeling analysis. The delta features between fractions are calculated to depict tumor change. The patients with 4-fraction SBRT are only used for screening robust features. In patients receiving 5-fraction SBRT, the predictive ability of both original and delta CBCT features for two-level treatment response (local efficacy vs. local non-efficacy; complete response (CR) vs. partial response (PR)) is assessed by utilizing multivariable logistic regression with leave-one-out cross-validation. Additionally, univariate analysis is conducted to validate the capability of CBCT features in identifying local efficacy in patients receiving 3-fraction SBRT. In patients receiving 5-fraction SBRT, the combined models incorporating original and delta CBCT radiomics features demonstrate higher area under the curve (AUC) values compared to models using either original or delta features alone for both classification tasks. The AUC values for predicting local efficacy vs. local non-efficacy are 0.58 for original features, 0.82 for delta features, and 0.90 for combined features. For distinguishing PR from CR, the respective AUC values for original, delta and combined features are 0.79, 0.80, and 0.89. In patients receiving 3-fraction SBRT, eight valuable CBCT radiomics features are identified for predicting local efficacy. The combination of original and delta radiomics derived from fractionated CBCT images in liver cancer patients undergoing SBRT shows promise in providing comprehensive information for predicting treatment response.
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Affiliation(s)
- Pengfei Yang
- Peking University Aerospace School of Clinical Medicine, Aerospace Center Hospital, Beijing, 100049, China
- Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, China
| | - Jingjing Shan
- Department of Radiation Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xin Ge
- School of Science, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Qinxuan Zhou
- Department of Radiation Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Mingchao Ding
- Peking University Aerospace School of Clinical Medicine, Aerospace Center Hospital, Beijing, 100049, China
| | - Tianye Niu
- Peking University Aerospace School of Clinical Medicine, Aerospace Center Hospital, Beijing, 100049, China.
- Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, China.
| | - Jichen Du
- Peking University Aerospace School of Clinical Medicine, Aerospace Center Hospital, Beijing, 100049, China.
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Jaksic N, Modesto A, Meillan N, Bordron A, Michalet M, Riou O, Lisbona A, Huguet F. Stereotactic body radiation therapy for liver metastases in oligometastatic disease. Cancer Radiother 2024; 28:75-82. [PMID: 37865603 DOI: 10.1016/j.canrad.2023.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/07/2023] [Accepted: 04/25/2023] [Indexed: 10/23/2023]
Abstract
Oligometastatic cancers designate cancers in which the number of metastases is less than five, corresponding to a particular biological entity whose prognosis is situated between a localized and metastatic disease. The liver is one of the main sites of metastases. When patients are not suitable for surgery, stereotactic body radiotherapy provides high local control rate, although these data come mainly from retrospective studies, with no phase III study results. The need for a high therapeutic dose (biologically effective dose greater than 100Gy) while respecting the constraints on the organs at risk, and the management of respiratory movements require expertise and sufficient technical prerequisites. The emergence of new techniques such as MRI-guided radiotherapy could further increase the effectiveness of stereotactic radiotherapy of liver metastases, and thus improve the prognosis of these oligometastatic cancers.
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Affiliation(s)
- N Jaksic
- Institut de cancérologie et radiothérapie Brétillien, 35400 Saint-Malo, France.
| | - A Modesto
- Département de radiothérapie, institut régional du cancer, 31100 Toulouse, France
| | - N Meillan
- Département de radiothérapie, centre hospitalier d'Argenteuil, 95107 Argenteuil, France
| | - A Bordron
- Département de radiothérapie, centre hospitalier universitaire de Brest, 29200 Brest, France
| | - M Michalet
- Département de radiothérapie, institut régional du cancer, 34000 Montpellier, France
| | - O Riou
- Département de radiothérapie, institut régional du cancer, 34000 Montpellier, France
| | - A Lisbona
- Département de radiothérapie, institut régional du cancer, 44800 Saint-Herblain, France
| | - F Huguet
- Service d'oncologie radiothérapie, hôpital Tenon, hôpitaux universitaires Est Parisien, Sorbonne université, 75020 Paris, France
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Filoni E, Musci V, Di Rito A, Inchingolo R, Memeo R, Mannavola F. Multimodal Management of Colorectal Liver Metastases: State of the Art. Oncol Rev 2024; 17:11799. [PMID: 38239856 PMCID: PMC10794467 DOI: 10.3389/or.2023.11799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 12/13/2023] [Indexed: 01/22/2024] Open
Abstract
Liver is the most common site of colorectal cancer (CRC) metastases. Treatment of CRC liver metastases (CRLM) includes different strategies, prevalently based on the clinical and oncological intent. Valid approaches in liver-limited or liver-prevalent disease include surgery, percutaneous ablative procedures (radiofrequency ablation, microwave ablation), intra-arterial perfusional techniques (chemo-embolization, radio-embolization) as well as stereotactic radiotherapy. Systemic treatments, including chemotherapy, immunotherapy and other biological agents, are the only options for patients with no chance of locoregional approaches. The use of chemotherapy in other settings, such as neoadjuvant, adjuvant or conversion therapy of CRLM, is commonly accepted in the clinical practice, although data from several clinical trials have been mostly inconclusive. The optimal integration of all these strategies, when applicable and clinically indicated, should be ever considered in patients affected by CRLM based on clinical evidence and multidisciplinary experience. Here we revised in detail all the possible therapeutic approaches of CRLM focusing on the current evidences, the studies still in progress and the often contradictory data.
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Affiliation(s)
- Elisabetta Filoni
- Interdisciplinary Department of Medicine, University of Bari “Aldo Moro”, Bari, Italy
- Division of Medical Oncology, A.O.U. Consorziale Policlinico di Bari, Bari, Italy
| | - Vittoria Musci
- Interdisciplinary Department of Medicine, University of Bari “Aldo Moro”, Bari, Italy
- Division of Medical Oncology, A.O.U. Consorziale Policlinico di Bari, Bari, Italy
| | - Alessia Di Rito
- Radiotherapy Unit, P.O. “Mons A.R. Dimiccoli”, Barletta, Italy
| | - Riccardo Inchingolo
- Unit of Interventional Radiology, “F. Miulli” General Regional Hospital, Acquaviva delle Fonti, Italy
| | - Riccardo Memeo
- Unit of Hepato-Pancreatic-Biliary Surgery, “F. Miulli” General Regional Hospital, Acquaviva delle Fonti, Italy
| | - Francesco Mannavola
- Division of Medical Oncology, A.O.U. Consorziale Policlinico di Bari, Bari, Italy
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Begum M, Lewison G, Wang X, Dunne PD, Maughan T, Sullivan R, Lawler M. Global colorectal cancer research, 2007-2021: Outputs and funding. Int J Cancer 2023; 152:470-479. [PMID: 36082449 PMCID: PMC10086800 DOI: 10.1002/ijc.34279] [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: 03/11/2022] [Revised: 06/30/2022] [Accepted: 07/05/2022] [Indexed: 02/01/2023]
Abstract
The purpose of this study was to provide an evidence base for colorectal cancer research activity that might influence policy, mainly at the national level. Improvements in healthcare delivery have lengthened life expectancy, but within a situation of increased cancer incidence. The disease burden of CRC has risen significantly, particularly in Africa, Asia and Latin America. Research is key to its control and reduction, but few studies have delineated the volume and funding of global research on CRC. We identified research papers in the Web of Science (WoS) from 2007 to 2021, and determined the contributions of the leading countries, the research domains studied, and their sources of funding. We identified 62 716 papers, representing 5.7% of all cancer papers. This percentage was somewhat disproportionate to the disease burden (7.7% in 2015), especially in Eastern Europe. International collaboration increased over the time period in almost all countries except in China. Genetics, surgery and prognosis were the leading research domains. However, research on palliative care and quality-of-life in CRC was lacking. In Western Europe, the main funding source was the charity sector, particularly in the UK, but in most other countries government played the leading role, especially in China and the USA. There was little support from industry. Several Asian countries provided minimal contestable funding, which may have reduced the impact of their CRC research. Certain countries must perform more CRC research overall, especially in domains such as screening, palliative care and quality-of-life. The private-non-profit sector should be an alternative source of support.
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Affiliation(s)
- Mursheda Begum
- Queen Mary University of London, School of Business and Management, London, UK
| | - Grant Lewison
- King's College London, Institute of Cancer Policy, Guy's Hospital, London, UK
| | - Xiang Wang
- Department of Medical Oncology, Peking Union Medical College Hospital, Beijing, China
| | - Philip D Dunne
- Faculty of Medicine, Patrick G Johnston Centre for Cancer Research, Health and Life Sciences, Queen's University Belfast, Belfast, UK
| | - Tim Maughan
- MRC Oxford Institute for Radiation Oncology Gray Laboratories, University of Oxford, Oxford, UK
| | - Richard Sullivan
- King's College London, Institute of Cancer Policy, Guy's Hospital, London, UK
| | - Mark Lawler
- Faculty of Medicine, Patrick G Johnston Centre for Cancer Research, Health and Life Sciences, Queen's University Belfast, Belfast, UK
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7
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MRI-guided Radiotherapy (MRgRT) for treatment of Oligometastases: Review of clinical applications and challenges. Int J Radiat Oncol Biol Phys 2022; 114:950-967. [PMID: 35901978 DOI: 10.1016/j.ijrobp.2022.07.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 11/23/2022]
Abstract
PURPOSE Early clinical results on the application of magnetic resonance imaging (MRI) coupled with a linear accelerator to deliver MR-guided radiation therapy (MRgRT) have demonstrated feasibility for safe delivery of stereotactic body radiotherapy (SBRT) in treatment of oligometastatic disease. Here we set out to review the clinical evidence and challenges associated with MRgRT in this setting. METHODS AND MATERIALS We performed a systematic review of the literature pertaining to clinical experiences and trials on the use of MRgRT primarily for the treatment of oligometastatic cancers. We reviewed the opportunities and challenges associated with the use of MRgRT. RESULTS Benefits of MRgRT pertaining to superior soft-tissue contrast, real-time imaging and gating, and online adaptive radiotherapy facilitate safe and effective dose escalation to oligometastatic tumors while simultaneously sparing surrounding healthy tissues. Challenges concerning further need for clinical evidence and technical considerations related to planning, delivery, quality assurance (QA) of hypofractionated doses, and safety in the MRI environment must be considered. CONCLUSIONS The promising early indications of safety and effectiveness of MRgRT for SBRT-based treatment of oligometastatic disease in multiple treatment locations should lead to further clinical evidence to demonstrate the benefit of this technology.
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Jethwa KR, Jin Z, Hallemeier CL. A Critical Review of the Role of Local Therapy for Oligometastatic Gastrointestinal Cancer. Int J Radiat Oncol Biol Phys 2022; 114:780-791. [DOI: 10.1016/j.ijrobp.2022.06.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/20/2022] [Accepted: 06/22/2022] [Indexed: 10/31/2022]
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9
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Thaper D, Yadav HP, Sharma D, Kamal R, Singh G, Oinam AS, Kumar V. Degree of reduction in normal liver complication probability from free-breathing to breath-hold liver SBRT: a dose-escalation strategy using radiation dose-volume effect. Biomed Phys Eng Express 2021; 8. [PMID: 34874286 DOI: 10.1088/2057-1976/ac3fe5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 12/03/2021] [Indexed: 11/12/2022]
Abstract
Introduction. This study aimed to analyze the degree of reduction in normal liver complication probability (NTCP) from free-breathing (FB) to breath-hold (BH) liver SBRT. The effect of the radiation dose-volume on the mean liver dose (MLD) was also analyzed due to dose prescription, normal liver volume (NLV), and PTV.Materials and Methods. Thirty-three stereotactic body radiation therapy (SBRT) cases of hepatocellular carcinoma were selected, retrospectively. For FB, the treatments were planned on average intensity projection scan (CTavg), and patient-specific internal target volume (ITV) margins were applied. To simulate the BH treatment, computed tomography (CT) scan correspond to the 40%-50% of the respiratory cycle (CT40%-50%) was chosen, and an appropriate intrafraction margin of 2 mm, 1.5 mm, and 1.5 mm were given in craniocaudal (CC), superior-inferior (SI), and lateral direction to generate the final iGTV. As per RTOG 1112, all organs at risk (OAR's) were considered during the optimization of treatment plans. NTCP was calculated using LKB fractionated model. Multivariate regression analysis was performed to see the effect of EQD2Gy, NLV, and PTV on MLD2Gy.Results.A significant dosimetric difference was observed in the normal liver (liver-ITV/iGTV). A reduction of 1.7% in NTCP was observed from FB to BH technique. The leverage of dose escalation is more in BH because MLD2Gycorresponds to 5%, 10%, 20%, and 50% NTCP was 0.099 Gy, 0.41 Gy, 1.21 Gy, and 3.432 Gy more in BH as compared to FB technique. In MVRA, the major factor which was attributed to a change in MLD2Gyis EQD2Gy. Conclusion. From FB to BH technique, a significant reduction in NTCP was observed. The dose prescription is a major factor attributed to the change in MLD2Gy. Advances in knowledge: If feasible, prefer BH treatment either for tumor dose escalation or for the reduction in NTCP.
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Affiliation(s)
- Deepak Thaper
- Centre for Medical Physics, Panjab University, Chandigarh, India.,Radiation Oncology Department, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Hanuman P Yadav
- Radiation Oncology Department, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Deepti Sharma
- Radiation Oncology Department, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Rose Kamal
- Centre for Medical Physics, Panjab University, Chandigarh, India.,Radiation Oncology Department, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Gaganpreet Singh
- Centre for Medical Physics, Panjab University, Chandigarh, India.,Radiotherapy Department, PGIMER, Regional Cancer Centre, Chandigarh, India
| | - Arun S Oinam
- Radiotherapy Department, PGIMER, Regional Cancer Centre, Chandigarh, India
| | - Vivek Kumar
- Centre for Medical Physics, Panjab University, Chandigarh, India
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10
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Nieuwenhuizen S, Dijkstra M, Puijk RS, Timmer FEF, Nota IM, Opperman J, van den Bemd B, Geboers B, Ruarus AH, Schouten EAC, de Vries JJJ, Scheffer HJ, van Geel AM, van Waesberghe JHTM, Swijnenburg RJ, Versteeg KS, Lissenberg-Witte BI, van den Tol MP, Haasbeek CJA, Meijerink MR. Thermal Ablation versus Stereotactic Ablative Body Radiotherapy to Treat Unresectable Colorectal Liver Metastases: A Comparative Analysis from the Prospective Amsterdam CORE Registry. Cancers (Basel) 2021; 13:4303. [PMID: 34503113 PMCID: PMC8428373 DOI: 10.3390/cancers13174303] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/18/2021] [Accepted: 08/20/2021] [Indexed: 12/17/2022] Open
Abstract
Thermal ablation and stereotactic ablative radiotherapy (SABR) are techniques to eradicate colorectal liver metastases (CRLM). This study compares the safety, efficacy and long-term oncological outcomes of these treatment methods. All prospectively registered patients (AmCORE registry) treated with thermal ablation or SABR alone for unresectable CRLM between 2007 and 2020 were analyzed using multivariate Cox-proportional hazard regression. In total 199 patients were included for analysis: 144 (400 CRLM) thermal ablation; 55 (69 CRLM) SABR. SABR patients were characterized by older age (p = 0.006), extrahepatic disease at diagnosis (p = 0.004) and larger tumors (p < 0.001). Thermal ablation patients were more likely to have synchronous disease, higher clinical risk scores (p = 0.030) and higher numbers of CRLMs treated (p < 0.001). Mortality was zero and morbidity low in both groups: no serious adverse events were recorded following SABR (n = 0/55) and nine (n = 9/144 [6.3%]; all CTCAE grade 3) after thermal ablation. SABR was associated with an inferior overall survival (OS) (median OS 53.0 months vs. 27.4 months; HR = 1.29, 95% CI 1.12-1.49; p = 0.003), local tumor progression-free survival (LTPFS) per-tumor (HR = 1.24, 95% CI 1.01-1.52; p = 0.044) and local control per-patient (HR = 1.57, 95% CI 1.20-2.04; p = 0.001) and per-tumor (HR = 1.89, 95% CI 1.44-2.49; p < 0.001). In this study thermal ablation was superior to SABR with regard to OS, LTPFS and local control, albeit at the cost of a limited risk of serious adverse events. Further studies are required to assess whether the worse outcomes following SABR were the effect of true differences in ablative treatment or a result of residual confounding.
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Affiliation(s)
- Sanne Nieuwenhuizen
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Madelon Dijkstra
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Robbert S. Puijk
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Florentine E. F. Timmer
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Irene M. Nota
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Jip Opperman
- Department of Radiology and Nuclear Medicine, Noordwest Ziekenhuisgroep, 1815 JD Alkmaar, The Netherlands; (J.O.); (A.M.v.G.)
| | - Bente van den Bemd
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Bart Geboers
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Alette H. Ruarus
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Evelien A. C. Schouten
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Jan J. J. de Vries
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Hester J. Scheffer
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Anne M. van Geel
- Department of Radiology and Nuclear Medicine, Noordwest Ziekenhuisgroep, 1815 JD Alkmaar, The Netherlands; (J.O.); (A.M.v.G.)
| | - Jan Hein T. M. van Waesberghe
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
| | - Rutger-Jan Swijnenburg
- Department of Surgery, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands;
| | - Kathelijn S. Versteeg
- Department of Medical Oncology, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (K.S.V.); (M.P.v.d.T.)
| | - Birgit I. Lissenberg-Witte
- Department of Epidemiology and Data Science, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands;
| | - M. Petrousjka van den Tol
- Department of Medical Oncology, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (K.S.V.); (M.P.v.d.T.)
| | - Cornelis J. A. Haasbeek
- Department of Radiation Oncology, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands;
| | - Martijn R. Meijerink
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Cancer Center Amsterdam, VU University, 1081 HV Amsterdam, The Netherlands; (M.D.); (R.S.P.); (F.E.F.T.); (I.M.N.); (B.v.d.B.); (B.G.); (A.H.R.); (E.A.C.S.); (J.J.J.d.V.); (H.J.S.); (J.H.T.M.v.W.); (M.R.M.)
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Ugurluer G, Mustafayev TZ, Gungor G, Atalar B, Abacioglu U, Sengoz M, Agaoglu F, Demir G, Ozyar E. Stereotactic MR-guided online adaptive radiation therapy (SMART) for the treatment of liver metastases in oligometastatic patients: initial clinical experience. Radiat Oncol J 2021; 39:33-40. [PMID: 33794572 PMCID: PMC8024184 DOI: 10.3857/roj.2020.00976] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Indexed: 12/22/2022] Open
Abstract
Purpose We aimed to present our initial clinical experience on the implementation of a stereotactic MR-guided online adaptive radiation therapy (SMART) for the treatment of liver metastases in oligometastatic disease. Materials and Methods Twenty-one patients (24 lesions) with liver metastasis treated with SMART were included in this retrospective study. Step-and-shoot intensity-modulated radiotherapy technique was used with daily plan adaptation. During delivery, real-time imaging was used by acquiring planar magnetic resonance images in sagittal plane for monitoring and gating. Acute and late toxicities were recorded both during treatment and follow-up visits. Results The median follow-up time was 11.6 months (range, 2.2 to 24.6 months). The median delivered total dose was 50 Gy (range, 40 to 60 Gy); with a median fraction number of 5 (range, 3 to 8 fractions) and the median fraction dose was 10 Gy (range, 7.5 to 18 Gy). Ninety-three fractions (83.7%) among 111 fractions were re-optimized. No patients were lost to follow-up and all patients were alive except one at the time of analysis. All of the patients had either complete (80.9%) or partial (19.1%) response at irradiated sites. Estimated 1-year overall survival was 93.3%. Intrahepatic and extrahepatic progression-free survival was 89.7% and 73.5% at 1 year, respectively. There was no grade 3 or higher acute or late toxicities experienced during the treatment and follow-up course. Conclusion SMART represents a new, noninvasive and effective alternative to current ablative radiotherapy methods for treatment of liver metastases in oligometastatic disease with the advantages of better visualization of soft tissue, real-time tumor tracking and potentially reduced toxicity to organs at risk.
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Affiliation(s)
- Gamze Ugurluer
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Teuta Zoto Mustafayev
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Gorkem Gungor
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Banu Atalar
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Ufuk Abacioglu
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Meric Sengoz
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Fulya Agaoglu
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Gokhan Demir
- Department of Medical Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | - Enis Ozyar
- Department of Radiation Oncology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
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Py JF, Salleron J, Courrech F, Beckendorf V, Croisé-Laurent V, Peiffert D, Vogin G, Dietmann AS. Long-term outcome of Stereotactic Body Radiation Therapy for patient with unresectable liver metastases from colorectal cancer. Cancer Radiother 2021; 25:350-357. [PMID: 33618909 DOI: 10.1016/j.canrad.2021.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 12/30/2020] [Accepted: 01/14/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE To investigate clinical outcome and predicting factors of local failures in patients with colorectal cancer treated for unresectable liver metastases with stereotactic body radiation therapy (SBRT). METHODS AND MATERIALS We restrospectively reviewed the medical records of 67 patients treated with the Cyberknife SBRT system for 99 hepatic metastases between January 2007 and December 2015 in our center. In total, 37.5 to 54.0Gy in 3 to 5 fractions were prescribed to the 80% isodose line. Local control (LC), intrahepatic progression incidence, Progression-Free Survival (PFS), Overall Survival (OS) and toxicity were evaluated. RESULTS The median follow-up was 47 months (IQR, 28-59 months). The median OS was 53 months, the 2-year OS and PFS rates were 81.4% and 54.0%. The 1- and 2-year LC rates were 86.6% and 72.4%. In the multivariate analysis, the degree of differentiation was the only prognostic factor for LC (HR 0.31, 95% CI, 0.10-0.98, P=0.046). Margin expansion>5mm was not associated with a better LC (HR 0.72, 95% CI, 0.38-1.37, P=0.317). Performans Status≥2 (HR 3.27, 95% CI, 1.07-9.98, P=0.038), chemotherapy for metastases before SBRT (HR 0.36, 95% CI, 0.18-0.75, P=0.006) and regional lymph node at diagnosis (HR 2.19, 95% CI, 1.09-4.43, P=0.029) were independent prognostic factors for OS. We report 2 cases of grade≥3 toxicity (3.0%) - one grade 3 acute nausea and one grade 3 late gastric ulcer. CONCLUSION Stereotactic body radiation therapy is an effective and well-tolerated treatment that allow high LC for liver metastases from colorectal cancer during the first two years. A prescription dose of 45Gy in 3 fractions to the 80% isodose line with a risk adapted schedule to respect Organ At Risk constraints allows a low rate of toxicity.
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Affiliation(s)
- J F Py
- Département de radiothérapie, institut de cancérologie de Lorraine, 54000 Nancy, France.
| | - J Salleron
- Département de biostatistique et data management, institut de cancérologie de Lorraine, 54000 Nancy, France
| | - F Courrech
- Département de radiothérapie, institut de cancérologie de Lorraine, 54000 Nancy, France
| | - V Beckendorf
- Département de radiothérapie, institut de cancérologie de Lorraine, 54000 Nancy, France
| | - V Croisé-Laurent
- Département de radiologie, CHU de Nancy, Vandœuvre-les-Nancy, France
| | - D Peiffert
- Département de radiothérapie, institut de cancérologie de Lorraine, 54000 Nancy, France
| | - G Vogin
- Département de radiothérapie, institut de cancérologie de Lorraine, 54000 Nancy, France
| | - A S Dietmann
- Département de radiothérapie, institut de cancérologie de Lorraine, 54000 Nancy, France
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Méndez Romero A, Schillemans W, van Os R, Koppe F, Haasbeek CJ, Hendriksen EM, Muller K, Ceha HM, Braam PM, Reerink O, Intven MPM, Joye I, Jansen EPM, Westerveld H, Koedijk MS, Heijmen BJM, Buijsen J. The Dutch-Belgian Registry of Stereotactic Body Radiation Therapy for Liver Metastases: Clinical Outcomes of 515 Patients and 668 Metastases. Int J Radiat Oncol Biol Phys 2021; 109:1377-1386. [PMID: 33451857 DOI: 10.1016/j.ijrobp.2020.11.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 09/29/2020] [Accepted: 11/15/2020] [Indexed: 12/22/2022]
Abstract
PURPOSE Although various studies have reported that stereotactic body radiation therapy (SBRT) for liver metastases has high local control rates and relatively low toxicity, most series included a small number of patients. We aimed to validate these outcomes in a large multi-institution patient cohort treated in accordance with a common protocol. METHODS AND MATERIALS A shared web-based registry of patients with liver metastases treated with SBRT was developed by 13 centers (12 in the Netherlands and 1 in Belgium). All the centers had previously agreed on the items to be collected, the fractionation schemes, and the organs-at-risk constraints to be applied. Follow-up was performed at the discretion of the centers. Patient, tumor, and treatment characteristics were entered in the registry. Only liver metastases treated individually as independent targets and with at least 1 radiologic follow-up examination were considered for local control analysis. Toxicity of grade 3 or greater was scored according to the Common Terminology Criteria of Adverse Events (v4.03). RESULTS Between January 1, 2013, and July 31, 2019, a total of 515 patients were entered in the web-based registry. The median age was 71 years. In total, 668 liver metastases were registered, and 447 were included for local control analysis. The most common primary tumor origin was colorectal cancer (80.3%), followed by lung cancer (8.9%) and breast cancer (4%). The most-used fractionation scheme was 3x18-20 Gy (36.0%), followed by 8x7.5 Gy (31.8%), 5x11-12 Gy (25.5%), and 12x5 Gy (6.7%). The median follow-up time was 1.1 years for local control and 2.3 years for survival. Actuarial 1-year local control was 87%; 1-year overall survival was 84%. Toxicity of grade 3 or greater was found in 3.9% of the patients. CONCLUSIONS This multi-institutional study confirms the high rates of local control and limited toxicity in a large patient cohort. Stereotactic body radiation therapy should be considered a valuable part of the multidisciplinary approach to treating liver metastases.
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Affiliation(s)
- Alejandra Méndez Romero
- Department of Radiation Oncology, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands.
| | - Wilco Schillemans
- Department of Radiation Oncology, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Rob van Os
- Department of Radiation Oncology, Amsterdam University Medical Centers (location AMC), Amsterdam, Netherlands
| | | | - Cornelis J Haasbeek
- Department of Radiation Oncology, Amsterdam University Medical Centers (location VUmc), Amsterdam, Netherlands
| | - Ellen M Hendriksen
- Department of Radiation Oncology, Medisch Spectrum Twente, Enschede, Netherlands
| | | | - Heleen M Ceha
- Department of Radiation Oncology, Haaglanden Medical Center Antoniushove, Leidschendam, Netherlands
| | - Pètra M Braam
- Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, Netherlands
| | - Onne Reerink
- Department of Radiation Oncology, Isala Kliniek, Zwolle, Netherlands
| | - Martijn P M Intven
- Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Ines Joye
- Iridium Cancer Network, Antwerp, Belgium
| | - Edwin P M Jansen
- Division of Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Henrike Westerveld
- Department of Radiation Oncology, Amsterdam University Medical Centers (location AMC), Amsterdam, Netherlands
| | - Merel S Koedijk
- Department of Radiation Oncology, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Ben J M Heijmen
- Department of Radiation Oncology, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Jeroen Buijsen
- Department of Radiation Oncology (MAASTRO), GROW-School for Oncology and Developmental Biology, Maastricht, Netherlands
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Recursive Partitioning Analysis for Local Control Achieved With Stereotactic Body Radiation Therapy for the Liver, Spine, or Lymph Nodes. Adv Radiat Oncol 2020; 6:100612. [PMID: 34195484 PMCID: PMC8233465 DOI: 10.1016/j.adro.2020.10.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/04/2020] [Accepted: 10/29/2020] [Indexed: 01/05/2023] Open
Abstract
Purpose This study aims to develop a local control risk stratification using recursive partitioning analysis (RPA) for patients receiving stereotactic body radiation therapy (SBRT) for metastatic cancer. Methods and Materials A single institutional database of 397 SBRT treatments to the liver, spine, and lymph nodes was constructed. All treatments required imaging follow-up to assess for local control. Cox proportional hazards analysis was implemented before the decision tree analysis. The data were split into training (70%), validation (10%), and testing (20%) sets for RPA to optimize the training set. Results In the study, 361 treatments were included in the local control analysis. Two-year local control was 71%. A decision tree analysis was used and the resulting model demonstrated 93.10% fidelity for the validation set and 87.67% for the test set. RPA class 3 was composed of patients with non-small cell lung cancer (NSCLC) primary tumors and treatment targets other than the cervical, thoracic, and lumbar spines. RPA class 2 included patients with primary cancers other than NSCLC or breast and treatments targets of the sacral spine or liver. RPA class 1 consisted of all other patients (including lymph node targets and patients with primary breast cancer). Classes 3, 2, and 1 demonstrated 3-year local controls rates of 29%, 50%, and 83%, respectively. On subgroup analysis using the Kaplan-Meier method, treatments for lymph nodes and primary ovarian disease demonstrated improved local control relative to other treatment targets (P < .005) and primary disease sites (P < .005), respectively. Conclusions A local control risk stratification model for SBRT to sites of metastatic disease was developed. Treatment target and primary tumor were identified as critical factors determining local control. NSCLC primary lesions have increased local failure for targets other than the cervical, thoracic, or lumbar spines, and improved local control was identified for lymph node sites and breast or ovarian primary tumors.
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15
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Nguyen TK, Sahgal A, Dagan R, Eppinga W, Guckenberger M, Kim JH, Lo SS, Redmond KJ, Siva S, Stish BJ, Tseng CL. Stereotactic Body Radiation Therapy for Nonspine Bone Metastases: International Practice Patterns to Guide Treatment Planning. Pract Radiat Oncol 2020; 10:e452-e460. [DOI: 10.1016/j.prro.2020.02.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/04/2020] [Accepted: 02/06/2020] [Indexed: 11/16/2022]
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4D CT image artifacts affect local control in SBRT of lung and liver metastases. Radiother Oncol 2020; 148:229-234. [DOI: 10.1016/j.radonc.2020.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 04/03/2020] [Accepted: 04/05/2020] [Indexed: 12/25/2022]
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17
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Jethwa KR, Jang S, Mullikin TC, Harmsen WS, Petersen MM, Olivier KR, Park SS, Neben-Wittich MA, Hubbard JM, Sandhyavenu H, Whitaker TJ, Waltman LA, Kipp BR, Merrell KW, Haddock MG, Hallemeier CL. Association of tumor genomic factors and efficacy for metastasis-directed stereotactic body radiotherapy for oligometastatic colorectal cancer. Radiother Oncol 2020; 146:29-36. [PMID: 32114263 DOI: 10.1016/j.radonc.2020.02.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 02/07/2020] [Accepted: 02/09/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE/OBJECTIVE(S) To report tumor genomic factors associated with overall survival (OS) and local failure (LF) for patients with colorectal cancer (CRC) who received metastasis-directed stereotactic body radiation therapy (SBRT). MATERIALS/METHODS This was a retrospective review of patients with CRC who received metastasis-directed SBRT. Tumor genomic alterations were identified through KRAS, BRAF, or a 50-gene next generation sequencing panel. OS and LF were estimated using Kaplan-Meier and competing-risk methods. RESULTS Eighty-five patients and 109 lesions were treated between 2008 and 2018. The median patient follow-up was 50 months (IQR: 28-107). The median and 5-year OS was 34 months and 26% (95% CI: 16-41%), respectively. The 2-year cumulative incidence of LF was 30% (95% CI: 23-41%). Univariate associates with OS included patient age ≥60 years, bone metastasis, increasing tumor size, KRAS mutation, and combined KRAS and TP53 mutation, while increasing tumor size, bone metastasis, biologically effective dose <100 Gy, and combined KRAS and TP53 mutation were associated with LF. Multivariate associates with OS included patient age ≥60 years (HR: 2.4, 95% CI: 1.2-4.8, p = 0.01), lesion size per 1 cm (HR: 1.3, 95% CI: 1.1-1.5, p < 0.01), and KRAS mutation (HR: 2.2, 95% CI: 1.2-4.3, p < 0.01), while no multivariable model for LF retained more than a single variable. CONCLUSION Genomic factors, in particular KRAS and TP53 mutation, may assist in patient selection and radiotherapeutic decision-making for patients with oligometastatic CRC. Prospective validation, ideally with genomic correlation of all irradiated metastases, is warranted.
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Affiliation(s)
- Krishan R Jethwa
- Department of Radiation Oncology, Mayo Clinic, Rochester, United States; Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, United States
| | - Samuel Jang
- Department of Radiation Oncology, Mayo Clinic, Rochester, United States
| | - Trey C Mullikin
- Department of Radiation Oncology, Mayo Clinic, Rochester, United States
| | - William S Harmsen
- Biomedical Statistics and Informatics, Mayo Clinic, Rochester, United States
| | - Molly M Petersen
- Biomedical Statistics and Informatics, Mayo Clinic, Rochester, United States
| | - Kenneth R Olivier
- Department of Radiation Oncology, Mayo Clinic, Rochester, United States
| | - Sean S Park
- Department of Radiation Oncology, Mayo Clinic, Rochester, United States
| | | | - Joleen M Hubbard
- Division of Medical Oncology, Mayo Clinic, Rochester, United States
| | | | - Thomas J Whitaker
- Department of Radiation Oncology, Mayo Clinic, Rochester, United States
| | - Lindsey A Waltman
- Department of Laboratory Medicine and pathology, Mayo Clinic, Rochester, United States
| | - Benjamin R Kipp
- Department of Laboratory Medicine and pathology, Mayo Clinic, Rochester, United States
| | - Kenneth W Merrell
- Department of Radiation Oncology, Mayo Clinic, Rochester, United States
| | - Michael G Haddock
- Department of Radiation Oncology, Mayo Clinic, Rochester, United States
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Chi Y, Shen C, Li B, Zhang Y, Yang M, Folkert M, Jia X. A method to reconstruct intra-fractional liver motion in rotational radiotherapy using linear fiducial markers. Phys Med Biol 2019; 64:225013. [PMID: 31593930 PMCID: PMC6986893 DOI: 10.1088/1361-6560/ab4c0d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Complex intra-fractional motion and deformation of the liver significantly impacts the accuracy of delivered dose in radiotherapy. It limits margin reduction, dose escalation and normal tissue sparing. A critical component of motion management is to accurately reconstruct tumor motion. In this study, we developed a six degrees of freedom projection marker matching method (6-DoF PM3) to reconstruct translational and rotational liver tumor motion in a rotational treatment delivery, such as volumetric modulated arc therapy (VMAT). Specifically, we modeled the use of two gold markers implanted in a linear form. The four endpoints of the two gold linear markers were used as tracking surrogates. During delivery, kV x-ray projection images were acquired. A method was developed to automatically identify the 2D marker-endpoints on the projection images. 3D marker positions were determined by solving an optimization problem with the objective function penalizing the distance from the reconstructed 3D position of each fiducial marker endpoint to the corresponding straight line defined by the kV x-ray projection of the endpoints. We performed a series of tests to evaluate different components of the method. For 2D marker endpoints identification, 99.9% of the marker endpoints were identified with an error [Formula: see text] (1 pixel) along both u and v directions. For 3D reconstruction of motion in simulation studies, error of rotational angle was [Formula: see text]° without considering the 2D marker identification error. The rotational angle error was relatively sensitive to the accuracy of 2D marker identification. When the 2D error raised from 0.22 mm to 0.776 mm, the error of 3D rotational angle increased from 0.5° to 2.5°. In the experimental end-to-end tests, the mean root-mean square error of the 3D reconstructed marker positions was 0.75 mm and the mean error of rotational angle was within 1.7°. Our method can accurately determine intra-fractional liver tumor motion in rotational radiotherapy using kV projections of only two linear fiducial markers.
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Affiliation(s)
- Yujie Chi
- Department of Physics, University of Texas Arlington, Arlington, TX 76019, United States of America
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Feldman AM, Modh A, Glide-Hurst C, Chetty IJ, Movsas B. Real-time Magnetic Resonance-guided Liver Stereotactic Body Radiation Therapy: An Institutional Report Using a Magnetic Resonance-Linac System. Cureus 2019; 11:e5774. [PMID: 31723533 PMCID: PMC6825488 DOI: 10.7759/cureus.5774] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 09/23/2019] [Indexed: 12/22/2022] Open
Abstract
Background Stereotactic body radiation therapy (SBRT) is a proven and effective modality for treatment of hepatic primary and metastatic tumors. However, these lesions are challenging for planning and treatment execution due to natural anatomic changes associated with respiration. Magnetic resonance imaging (MRI) offers superior soft tissue contrast resolution and the ability for real-time image-guided treatment delivery and lesion tracking. Objective To evaluate the plan quality, treatment delivery, and tumor response of a set of liver SBRT cancer treatments delivered with magnetic resonance (MR)-guided radiotherapy on a MR-linear accelerator (MR-linac). Methods Treatment data from 29 consecutive patients treated with SBRT were reviewed. All treatments were performed using a step and shoot technique to one or more liver lesions on an MR-linac platform. Patients received 45 to 50 Gy prescribed to at least 95% of the planning target volume (PTV) in five fractions except for two patients who received 27-30 Gy in three fractions. Computed tomography and MRI simulation were performed in the supine position prior to treatment in the free-breathing, end exhalation, and end inhalation breath-hold positions to determine patient tolerability and potential dosimetric advantages of each technique. Immobilization consisted of using anterior and posterior torso MRI receive coils embedded in a medium-sized vacuum cushion. Gating was performed using sagittal cine images acquired at 4 frames/second. Gating boundaries were defined in the three major axes to be 0.3 to 0.5 cm. An overlapping region of interest, defined as the percentage volume allowed outside the boundary for beam-on to occur, was set between 1 and 10%. The contoured target was assigned a 5-mm PTV expansion. Organs at risk constraints adopted by the American Association of Physicists in Medicine Task Group 101 were used during optimization. Results Twenty-nine patients, with a total of 34 lesions, successfully completed the prescribed treatment with minimal treatment breaks or delays. Twenty-one patients were treated at end-exhale, and six were treated at end-inhale. Two patients were treated using a free-breathing technique due to poor compliance with breath-hold instructions. The reported mean liver dose was 5.56 Gy (1.39 - 10.43; STD 2.85) and the reported mean liver volume receiving the prescribed threshold dose was 103.1 cm3 (2.9 - 236.6; STD 75.2). Follow-up imaging at one to 12 months post treatment confirmed either stable or decreased size of treated lesions in all but one patient. Toxicities were mild and included nausea/vomiting, abdominal pain and one case of bloody diarrhea. Four patients died due to complications from liver cirrhosis unrelated to radiation effect. Conclusion SBRT treatment using a gated technique on an MR-linac has been successfully demonstrated. Potential benefits of this modality include decreased liver dose leading to decreased toxicities. Further studies to identify the benefits and risks associated with MR-guided SBRT are necessary.
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Affiliation(s)
| | - Ankit Modh
- Radiation Oncology, Henry Ford Health System, Detroit, USA
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Neural Networks for Deep Radiotherapy Dose Analysis and Prediction of Liver SBRT Outcomes. IEEE J Biomed Health Inform 2019; 23:1821-1833. [DOI: 10.1109/jbhi.2019.2904078] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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[Liver stereotactic body radiotherapy: Clinical features and technical consequences, results. Which treatment machine in which situation?]. Cancer Radiother 2019; 23:636-650. [PMID: 31444078 DOI: 10.1016/j.canrad.2019.07.159] [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: 06/07/2019] [Revised: 07/05/2019] [Accepted: 07/05/2019] [Indexed: 12/31/2022]
Abstract
Liver stereotactic body radiotherapy is a developing technique for the treatment of primary tumours and metastases. Its implementation is complex because of the particularities of the treated organ and the comorbidities of the patients. However, this technique is a treatment opportunity for patients otherwise in therapeutic impasse. The scientific evidence of liver stereotactic body radiotherapy has been considered by the French health authority as insufficient for its widespread use outside specialized and experienced centers, despite a growing and important number of retrospective and prospective studies, but few comparative data. This article focuses on the specific features of stereotactic body radiotherapy for liver treatments and the results of published studies of liver stereotactic body radiotherapy performed with classic linear accelerators and dedicated radiosurgery units.
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22
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Vera R, González-Flores E, Rubio C, Urbano J, Valero Camps M, Ciampi-Dopazo JJ, Orcajo Rincón J, Morillo Macías V, Gomez Braco MA, Suarez-Artacho G. Multidisciplinary management of liver metastases in patients with colorectal cancer: a consensus of SEOM, AEC, SEOR, SERVEI, and SEMNIM. Clin Transl Oncol 2019; 22:647-662. [PMID: 31359336 DOI: 10.1007/s12094-019-02182-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 07/08/2019] [Indexed: 12/12/2022]
Abstract
Colorectal cancer (CRC) has the second-highest tumor incidence and is a leading cause of death by cancer. Nearly 20% of patients with CRC will have metastases at the time of diagnosis, and more than 50% of patients with CRC develop metastatic disease during the course of their disease. A group of experts from the Spanish Society of Medical Oncology, the Spanish Association of Surgeons, the Spanish Society of Radiation Oncology, the Spanish Society of Vascular and Interventional Radiology, and the Spanish Society of Nuclear Medicine and Molecular Imaging met to discuss and provide a multidisciplinary consensus on the management of liver metastases in patients with CRC. The group defined the different scenarios in which the disease can present: fit or unfit patients with resectable liver metastases, patients with potential resectable liver metastases, and patients with unresectable liver metastases. Within each scenario, the different strategies and therapeutic approaches are discussed.
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Affiliation(s)
- R Vera
- Medical Oncology, Complejo Hospitalario de Navarra, Calle Irunlarrea, 3, 31008, Pamplona, Navarra, Spain.
| | | | - C Rubio
- Radiation Oncology Department, University Hospital HM Sanchinarro, Madrid, Spain
| | - J Urbano
- Vascular and Interventional Radiology, Vithas Hospitals Group, Madrid, Spain
| | - M Valero Camps
- Nuclear Medicine, Clínica Rotger (Quiron Salud), Palma de Mallorca, Spain
| | - J J Ciampi-Dopazo
- Interventional Radiology Unit, Complejo Hospitalario de Toledo, Toledo, Spain
| | - J Orcajo Rincón
- Nuclear Medicine, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - V Morillo Macías
- Radiation Oncology, Hospital Provincial de Castellón, Castellón, Spain
| | - M A Gomez Braco
- Hepatobiliary and Liver Transplantation Unit, University Hospital Virgen del Rocío, Sevilla, Spain
| | - G Suarez-Artacho
- Hepatobiliary and Liver Transplantation Unit, University Hospital Virgen del Rocío, Sevilla, Spain
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Sarvizadeh M, Ghasemi F, Tavakoli F, Sadat Khatami S, Razi E, Sharifi H, Biouki NM, Taghizadeh M. Vaccines for colorectal cancer: an update. J Cell Biochem 2018; 120:8815-8828. [PMID: 30536960 DOI: 10.1002/jcb.28179] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 11/12/2018] [Indexed: 12/29/2022]
Abstract
Colorectal cancer (CRC) is known as the third most common and fourth leading cancer associated death worldwide. The occurrence of metastasis has remained as a critical challenge in CRC, so that distant metastasis (mostly to the liver) has been manifested in about 20%-25% of patients. Several screening approaches have introduced for detecting CRC in different stages particularly in early stages. The standard treatments for CRC are surgery, chemotherapy and radiotherapy, in alone or combination. Immunotherapy is a set of novel approaches with the aim of remodeling the immune system battle with metastatic cancer cells, such as immunomodulatory monoclonal antibodies (immune checkpoint inhibitors), adoptive cell transfer (ACT) and cancer vaccine. Cancer vaccines are designed to trigger the intense response of immune system to tumor-specific antigens. In two last decades, introduction of new cancer vaccines and designing several clinical trials with vaccine therapy, have been taken into consideration in colon cancer patients. This review will describe the treatment approaches with the special attention to vaccines applied to treat colorectal cancer.
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Affiliation(s)
- Mostafa Sarvizadeh
- The Advocate Center for Clinical Research, Ayatollah Yasrebi Hospital, Kashan, Iran
| | - Faezeh Ghasemi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Fatemeh Tavakoli
- Department of Biotechnology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sara Sadat Khatami
- Department of Biotechnology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Ebrahim Razi
- The Advocate Center for Clinical Research, Ayatollah Yasrebi Hospital, Kashan, Iran
| | - Hossein Sharifi
- The Advocate Center for Clinical Research, Ayatollah Yasrebi Hospital, Kashan, Iran
| | - Nousin Moussavi Biouki
- Department of Surgery, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohsen Taghizadeh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
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24
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Gkika E, Strouthos I, Kirste S, Adebahr S, Schultheiss M, Bettinger D, Fritsch R, Brass V, Maruschke L, Neeff HP, Lang SA, Nestle U, Grosu AL, Brunner TB. Repeated SBRT for in- and out-of-field recurrences in the liver. Strahlenther Onkol 2018; 195:246-253. [DOI: 10.1007/s00066-018-1385-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 10/09/2018] [Indexed: 12/21/2022]
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25
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Gerum S, Heinz C, Belka C, Walter F, Paprottka P, De Toni EN, Roeder F. Stereotactic body radiation therapy (SBRT) in patients with hepatocellular carcinoma and oligometastatic liver disease. Radiat Oncol 2018; 13:100. [PMID: 29843752 PMCID: PMC5975506 DOI: 10.1186/s13014-018-1048-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 05/16/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND To report our experience with SBRT in primary and secondary liver tumors. METHODS We retrospectively analysed 55 patients (70 lesions) with a median follow-up of 10 months (range 1-57) treated from 2011 to 2016. All patients had not been eligible for other local treatment options. Median age was 64 years and 64% were male. 27 patients (36 lesions) suffered from hepatocellular carcinoma (HCC, Child A:78%, Child B:18%, Child C:4%), 28 patients (34 lesions) had oligometastatic liver disease (MD). Treatment planning was based on 4D-CT usually after placement of fiducials. Dose and fractionation varied depending on localization and size, most commonly 3 × 12.5 Gy (prescribed to the surrounding 65%-isodose) in 56% and 5x8Gy (80% isodose) in 20% of the treated lesions. RESULTS Local recurrence was observed in 7 patients (13%) and 8 lesions (11%), resulting in estimated 1- and 2-year local control rates (LC) of 91 and 74%. Estimated 1- and 2-year rates of Freedom from hepatic failure (FFHF) were 42 and 28%. Number of lesions was predictive for LC and FFHF in the entire cohort. Estimated 1- and 2-year overall survival (OS) was 76 and 57%. OS was significantly affected by number of treated lesions and performance status. In the HCC subgroup, pretreatment liver function and gender were also predictive for OS. Maximum acute non-hepatic toxicity was grade 1 in 16% and grade 2 in 10% of the patients. Three HCC patients (11%) developed marked deterioration of liver function (grade 3/4). CONCLUSIONS SBRT resulted in high local control and acceptable survival rates in patients with HCC or MD not amendable to other locally-ablative treatment options with limited toxicity. Care should be taken in HCC patients with Child B cirrhosis.
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Affiliation(s)
- Sabine Gerum
- Department of Radiation Oncology, University Hospital LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Christian Heinz
- Department of Radiation Oncology, University Hospital LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Claus Belka
- Department of Radiation Oncology, University Hospital LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Franziska Walter
- Department of Radiation Oncology, University Hospital LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Philipp Paprottka
- Department of Radiology, University Hospital LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Enrico N De Toni
- Department of Internal Medicine, University Hospital LMU Munich,
- Marchioninistr. 15, 81377, Munich, Germany
| | - Falk Roeder
- Department of Radiation Oncology, University Hospital LMU Munich, Marchioninistr. 15, 81377, Munich, Germany. .,CCU Molecular Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
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Mazzola R, Fersino S, Alongi P, Di Paola G, Gregucci F, Aiello D, Tebano U, Pasetto S, Ruggieri R, Salgarello M, Alongi F. Stereotactic body radiation therapy for liver oligometastases: predictive factors of local response by 18F-FDG-PET/CT. Br J Radiol 2018; 91:20180058. [PMID: 29750538 DOI: 10.1259/bjr.20180058] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE To investigate metabolic parameters as predictive of local response after stereotactic body radiation therapy (SBRT) for liver-oligometastases. METHODS Inclusion criteria of the present retrospective study were: (a) liver oligometastases with controlled primary tumor; (b) absence of progressive disease ≥6 months; (c) metastases ≤ 3; (d) evaluation of SBRT-response by means of 18-fludeoxyglucose-PET/CT for at least two subsequent evaluations; (e) Karnofsky performance status >80; (f) life-expectancy >6 months. The following metabolic parameters were defined semi-quantitatively for each metastases: (1) standardized uptake value (SUVmax; (2) SUV-mean; (3) metabolic tumor volume (MTV), tumor volume with a SUV ≥3, threshold 40%; (4) total lesion glycolysis (TLG), i.e. the product of SUV-mean and MTV. Local control was defined as absence of recurrence in the field of irradiation. RESULTS 41 liver metastases were analyzed. Pre-SBRT, median SUV-max was 8.7 (range, 4.5-23.59), median SUV-mean was 4.6 (range, 3-7.5), median MTV was 5.7 cc (range, 0.9-80.6) and median total lesion glycolysis was 24.1 (range, 3.6-601.5). At statistical analysis, metastases with SUV-mean >5 (p 0.04; odds ratio 4.75, sensitivity = 50%, specificity = 82.6%, area under the curve 0.66) and SUV-max >12 (p 0.02; odds ratio 5.03, sensitivity = 69%, specificity = 70%, area under the curve = 0.69) showed higher rates of infield-failure compared to the remaining lesions. CONCLUSION According to current findings, pre-SBRT SUV-max and SUV-mean could be predictable of local response in liver oligometastases. Advances in knowledge: Present findings could support the hypothesis that fludeoxyglucose-PET/CT may be a powerful tool to predict tumor control. Specifically, current results might be helpful for clinicians in the decision-making process regarding liver oligometastatic patient selection as well as the individual therapy stratification distinguishing between slowly local progressing patients and rapidly progressing patients.
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Affiliation(s)
- Rosario Mazzola
- 1 Radiation Oncology, Sacro Cuore Don Calabria Hospital , Negrar, Verona , Italy
| | - Sergio Fersino
- 1 Radiation Oncology, Sacro Cuore Don Calabria Hospital , Negrar, Verona , Italy
| | - Pierpaolo Alongi
- 2 Department of Radiological Sciences, Nuclear Medicine Unit, Fondazione Istituto G. Giglio , Cefalù , Italy
| | | | - Fabiana Gregucci
- 4 Radiation Oncology School, University of Padua , Padua , Italy
| | - Dario Aiello
- 5 Radiation Oncology School, University of Palermo , Palermo , Italy
| | - Umberto Tebano
- 4 Radiation Oncology School, University of Padua , Padua , Italy
| | - Stefano Pasetto
- 6 Nuclear Medicine, Sacro Cuore Don Calabria Hospital , Negrar, Verona , Italy
| | - Ruggero Ruggieri
- 1 Radiation Oncology, Sacro Cuore Don Calabria Hospital , Negrar, Verona , Italy
| | - Matteo Salgarello
- 6 Nuclear Medicine, Sacro Cuore Don Calabria Hospital , Negrar, Verona , Italy
| | - Filippo Alongi
- 1 Radiation Oncology, Sacro Cuore Don Calabria Hospital , Negrar, Verona , Italy.,7 University of Brescia , Brescia , Italy
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27
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Wang WJ, Chiou JF, Huang Y. Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy. J Vis Exp 2018. [PMID: 29806826 DOI: 10.3791/57050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The prognosis of patients with metastatic cancers has improved in the past decades due to effective chemotherapy and oligometastatic surgery. For inoperable patients, local ablation therapies, such as stereotactic body radiotherapy (SBRT), can provide effective local tumor control with minimal toxicity. Because of its high precision and accuracy, SBRT delivers a higher radiation dose per fraction, is more effective, and targets smaller irradiation volumes than does conventional radiotherapy. In addition, steep dose gradients from target lesions to surrounding normal tissues are achieved using SBRT; thus, SBRT provides more effective tumor control and exhibits fewer side effects than conventional radiotherapy. The use of SBRT is prevalent for treating intracranial lesions (known as stereotactic radiosurgery); however, it is now also used for treating spinal and adrenal metastases. Because of advancements in image-guided assistance and respiratory motion management, several studies have investigated the use of SBRT for treating lung or liver tumors, which move as a patient breathes. The results of these studies have suggested that SBRT favorably controls tumors in the case of moving lesions. Four-dimensional computed tomography (4D-CT) with an abdominal compressor (AC) is clinically convenient for effective respiratory motion management. Because this method is noninvasive and allows free breathing, its use reduces complications. Furthermore, patients consider this method convenient. Moreover, it is considered more efficient than other methods of respiratory motion management by physicians and therapists. The use of 4D-CT with an AC for treating pulmonary lesions has also been widely investigated, and the technique is gaining acceptance for treating hepatic lesions. However, the protocols for using 4D-CT with an AC for treating hepatic lesions are different from those used for treating pulmonary lesions. In this article, we describe a new protocol for SBRT with 4D-CT and an AC for treating liver metastases.
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Affiliation(s)
- Wei-Jun Wang
- Department of Radiation Oncology, Taipei Medical University Hospital; Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University
| | - Jeng-Fong Chiou
- Department of Radiation Oncology, Taipei Medical University Hospital; Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University; Taipei Cancer Center, Taipei Medical University
| | - Yaoru Huang
- Department of Radiation Oncology, Taipei Medical University Hospital; Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University; Graduate Institute of Biomedical Materials & Tissue Engineering, College of Biomedical Engineering, Taipei Medical University;
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28
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Tsai YL, Wu CJ, Shaw S, Yu PC, Nien HH, Lui LT. Quantitative analysis of respiration-induced motion of each liver segment with helical computed tomography and 4-dimensional computed tomography. Radiat Oncol 2018; 13:59. [PMID: 29609631 PMCID: PMC5879734 DOI: 10.1186/s13014-018-1007-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/22/2018] [Indexed: 12/16/2022] Open
Abstract
Background To analyze the respiratory-induced motion of each liver segment using helical computed tomography (helical CT) and 4-dimensional computed tomography (4DCT), and to establish the individual segment expansion margin of internal target volume (ITV) to facilitate target delineation of tumors in different liver segments. Methods Twenty patients who received radiotherapy with CT-simulation scanning of the whole liver in both helical CT and 10-phase-gated 4DCT were investigated, including 2 patients with esophagus cancer, 4 with lung cancer, 10 with breast cancer, 2 with liver cancer, 1 with thymoma, and 1 with gastric diffuse large B-cell lymphoma (DLBCL). For each patient, 9 representative points were drawn on the helical CT images of liver segments 1, 2, 3, 4a, 4b, 5, 6, 7, and 8, respectively, and adaptively deformed to 2 phases of the 4DCT images at the end of inspiration (phase 0 CT) and expiration (phase 50 CT) in the treatment planning system. Using the amplitude of each point between phase 0 CT and phase 50 CT, we established quantitative data for the respiration-induced motion of each liver segment in 3-dimensional directions. Moreover, using the amplitude between the original helical CT and both 4DCT images, we rendered the individual segment expansion margin of ITV for hepatic target delineation to cover more than 95% of each tumor. Results The average amplitude (mean ± standard deviation) was 0.6 ± 3.0 mm in the left-right (LR) direction, 2.3 ± 2.4 mm in the anterior-posterior (AP) direction, and 5.7 ± 3.4 mm in the superior-inferior (SI) direction, respectively. All of the segments moved posteriorly and superiorly during expiration. Segment 7 had the largest amplitude in the SI direction, at 8.6 ± 3.4 mm. Otherwise, the segments over the lateral side, including segments 2, 3, 6, and 7, had greater excursion in the SI direction compared to the medial segments. To cover more than 95% of each tumor, the required expansion margin of ITV in the LR, AP, and SI directions were at least 2.5 mm, 2.5 mm, and 5.0 mm on average, respectively, with variations between different segments. Conclusions The greatest excursion occurred in liver segment 7, followed by the segments over the lateral side in the SI direction. The individual segment expansion margin of ITV is required to delineate targets for each segment and direction.
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Affiliation(s)
- Yu-Lun Tsai
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan
| | - Ching-Jung Wu
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan.,Department of Radiation Oncology, National Defense Medical Center, Taipei, Taiwan.,Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan
| | - Suzun Shaw
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan
| | - Pei-Chieh Yu
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan
| | - Hsin-Hua Nien
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan
| | - Louis Tak Lui
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan.
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Andratschke N, Alheid H, Allgäuer M, Becker G, Blanck O, Boda-Heggemann J, Brunner T, Duma M, Gerum S, Guckenberger M, Hildebrandt G, Klement RJ, Lewitzki V, Ostheimer C, Papachristofilou A, Petersen C, Schneider T, Semrau R, Wachter S, Habermehl D. The SBRT database initiative of the German Society for Radiation Oncology (DEGRO): patterns of care and outcome analysis of stereotactic body radiotherapy (SBRT) for liver oligometastases in 474 patients with 623 metastases. BMC Cancer 2018; 18:283. [PMID: 29534687 PMCID: PMC5851117 DOI: 10.1186/s12885-018-4191-2] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 03/06/2018] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The intent of this pooled analysis as part of the German society for radiation oncology (DEGRO) stereotactic body radiotherapy (SBRT) initiative was to analyze the patterns of care of SBRT for liver oligometastases and to derive factors influencing treated metastases control and overall survival in a large patient cohort. METHODS From 17 German and Swiss centers, data on all patients treated for liver oligometastases with SBRT since its introduction in 1997 has been collected and entered into a centralized database. In addition to patient and tumor characteristics, data on immobilization, image guidance and motion management as well as dose prescription and fractionation has been gathered. Besides dose response and survival statistics, time trends of the aforementioned variables have been investigated. RESULTS In total, 474 patients with 623 liver oligometastases (median 1 lesion/patient; range 1–4) have been collected from 1997 until 2015. Predominant histologies were colorectal cancer (n = 213 pts.; 300 lesions) and breast cancer (n = 57; 81 lesions). All centers employed an SBRT specific setup. Initially, stereotactic coordinates and CT simulation were used for treatment set-up (55%), but eventually were replaced by CBCT guidance (28%) or more recently robotic tracking (17%). High variance in fraction (fx) number (median 1 fx; range 1–13) and dose per fraction (median: 18.5 Gy; range 3–37.5 Gy) was observed, although median BED remained consistently high after an initial learning curve. Median follow-up time was 15 months; median overall survival after SBRT was 24 months. One- and 2-year treated metastases control rate of treated lesions was 77% and 64%; if maximum isocenter biological equivalent dose (BED) was greater than 150 Gy EQD2Gy, it increased to 83% and 70%, respectively. Besides radiation dose colorectal and breast histology and motion management methods were associated with improved treated metastases control. CONCLUSION After an initial learning curve with regards to total cumulative doses, consistently high biologically effective doses have been employed translating into high local tumor control at 1 and 2 years. The true impact of histology and motion management method on treated metastases control deserve deeper analysis. Overall survival is mainly influenced by histology and metastatic tumor burden.
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Affiliation(s)
- N. Andratschke
- University Hospital Zürich, Department of Radiation Oncology, University of Zurich, Rämistrasse 100, 8091 Zurich, Switzerland
| | - H. Alheid
- Department of Radiation Oncology, Strahlentherapie Bautzen, Bautzen, Germany
| | - M. Allgäuer
- Department of Radiation Oncology, Krankenhaus Barmherzige Brüder, Regensburg, Germany
| | - G. Becker
- RadioChirurgicum CyberKnife Südwest, Radiation Oncology, Göppingen, Germany
| | - O. Blanck
- Department of Radiation Oncology, Universitätsklinikum Schleswig-Holstein, /Lübeck, Kiel, Germany
| | - J. Boda-Heggemann
- University Hospital Mannheim, Department of Radiation Oncology, University of Heidelberg, Mannheim, Germany
| | - T. Brunner
- Department of Radiation Oncology, University Hospital Freiburg, Freiburg, Germany
| | - M. Duma
- Department of Radiation Oncology, Klinikum rechts der Isar- Technische Universität München, Munich, Germany
| | - S. Gerum
- Department of Radiation Oncology, University of Munich – LMU Munich, Munich, Germany
| | - M. Guckenberger
- University Hospital Zürich, Department of Radiation Oncology, University of Zurich, Rämistrasse 100, 8091 Zurich, Switzerland
| | - G. Hildebrandt
- Department of Radiation Oncology, University Hospital Rostock, Rostock, Germany
| | - R. J. Klement
- Department of Radiation Oncology, Leopoldina Hospital Schweinfurt, Schweinfurt, Germany
| | - V. Lewitzki
- Department of Radiation Oncology, University Hospital Würzburg, Würzburg, Germany
| | - C. Ostheimer
- Department of Radiation Oncology, University Hospital Halle, Halle, Germany
| | - A. Papachristofilou
- Department of Radiation Oncology, University Hospital Basel, Basel, Switzerland
| | - C. Petersen
- Department of Radiation Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - T. Schneider
- Department of Radiation Oncology, Strahlenzentrum Hamburg, Hamburg, Germany
| | - R. Semrau
- Department of Radiation Oncology, University Hospital of Cologne, Cologne, Germany
| | - S. Wachter
- Klinikum Passau, Radiation Oncology, Passau, Germany
| | - D. Habermehl
- Department of Radiation Oncology, University Hospital Heidelberg, Heidelberg, Germany
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30
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Local Control After Stereotactic Body Radiation Therapy for Liver Tumors. Int J Radiat Oncol Biol Phys 2018; 110:188-195. [PMID: 29395629 DOI: 10.1016/j.ijrobp.2017.12.288] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 12/29/2017] [Indexed: 12/15/2022]
Abstract
PURPOSE To quantitatively evaluate published experiences with hepatic stereotactic body radiation therapy (SBRT), to determine local control rates after treatment of primary and metastatic liver tumors and to examine whether outcomes are affected by SBRT dosing regimen. METHODS AND MATERIALS We identified published articles that reported local control rates after SBRT for primary or metastatic liver tumors. Biologically effective doses (BEDs) were calculated for each dosing regimen using the linear-quadratic equation. We excluded series in which a wide range of BEDs was used. Individual lesion data for local control were extracted from actuarial survival curves, and data were aggregated to form a single dataset. Actuarial local control curves were generated using the Kaplan-Meier method after grouping lesions by disease type and BED (<100 Gy10 vs >100 Gy10). Comparisons were made using log-rank testing. RESULTS Thirteen articles met all inclusion criteria and formed the dataset for this analysis. The 1-, 2-, and 3-year actuarial local control rates after SBRT for primary liver tumors (n = 431) were 93%, 89%, and 86%, respectively. Lower 1- (90%), 2- (79%), and 3-year (76%) actuarial local control rates were observed for liver metastases (n = 290, log-rank P = .011). Among patients treated with SBRT for primary liver tumors, there was no evidence that local control is influenced by BED within the range of schedules used. For liver metastases, on the other hand, outcomes were significantly better for lesions treated with BEDs exceeding 100 Gy10 (3-year local control 93%) than for those treated with BEDs of ≤100 Gy10 (3-year local control 65%, P < .001). CONCLUSIONS Stereotactic body radiation therapy for primary liver tumors provides high rates of durable local control, with no clear evidence for a dose-response relationship among commonly utilized schedules. Excellent local control rates are also seen after SBRT for liver metastases when BEDs of >100 Gy10 are utilized.
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31
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Lawler M, Alsina D, Adams RA, Anderson AS, Brown G, Fearnhead NS, Fenwick SW, Halloran SP, Hochhauser D, Hull MA, Koelzer VH, McNair AGK, Monahan KJ, Näthke I, Norton C, Novelli MR, Steele RJC, Thomas AL, Wilde LM, Wilson RH, Tomlinson I. Critical research gaps and recommendations to inform research prioritisation for more effective prevention and improved outcomes in colorectal cancer. Gut 2018; 67:179-193. [PMID: 29233930 PMCID: PMC5754857 DOI: 10.1136/gutjnl-2017-315333] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 10/24/2017] [Accepted: 10/25/2017] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Colorectal cancer (CRC) leads to significant morbidity/mortality worldwide. Defining critical research gaps (RG), their prioritisation and resolution, could improve patient outcomes. DESIGN RG analysis was conducted by a multidisciplinary panel of patients, clinicians and researchers (n=71). Eight working groups (WG) were constituted: discovery science; risk; prevention; early diagnosis and screening; pathology; curative treatment; stage IV disease; and living with and beyond CRC. A series of discussions led to development of draft papers by each WG, which were evaluated by a 20-strong patient panel. A final list of RGs and research recommendations (RR) was endorsed by all participants. RESULTS Fifteen critical RGs are summarised below: RG1: Lack of realistic models that recapitulate tumour/tumour micro/macroenvironment; RG2: Insufficient evidence on precise contributions of genetic/environmental/lifestyle factors to CRC risk; RG3: Pressing need for prevention trials; RG4: Lack of integration of different prevention approaches; RG5: Lack of optimal strategies for CRC screening; RG6: Lack of effective triage systems for invasive investigations; RG7: Imprecise pathological assessment of CRC; RG8: Lack of qualified personnel in genomics, data sciences and digital pathology; RG9: Inadequate assessment/communication of risk, benefit and uncertainty of treatment choices; RG10: Need for novel technologies/interventions to improve curative outcomes; RG11: Lack of approaches that recognise molecular interplay between metastasising tumours and their microenvironment; RG12: Lack of reliable biomarkers to guide stage IV treatment; RG13: Need to increase understanding of health related quality of life (HRQOL) and promote residual symptom resolution; RG14: Lack of coordination of CRC research/funding; RG15: Lack of effective communication between relevant stakeholders. CONCLUSION Prioritising research activity and funding could have a significant impact on reducing CRC disease burden over the next 5 years.
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Affiliation(s)
- Mark Lawler
- Centre for Cancer Research and Cell Biology, Queen’s University Belfast, Belfast, UK
| | | | | | - Annie S Anderson
- Research into Cancer Prevention and Screening, University of Dundee, Dundee, UK
| | - Gina Brown
- Department of Radiology, Royal Marsden Hospital, Sutton, UK
| | | | - Stephen W Fenwick
- Hepatobiliary Surgery Unit, Aintree University Hospital, Liverpool, UK
| | - Stephen P Halloran
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - Daniel Hochhauser
- Department of Oncology, University College London Cancer Institute, London, UK
| | - Mark A Hull
- Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK
| | - Viktor H Koelzer
- Molecular and Population Genetics Laboratory, University of Oxford, Oxford, UK
| | - Angus G K McNair
- Centre for Surgical Research, University of Bristol, Bristol, UK
| | - Kevin J Monahan
- Family History of Bowel Cancer Clinic, Imperial College London, London, UK
| | - Inke Näthke
- School of Life Sciences, University of Dundee, Dundee, UK
| | - Christine Norton
- Florence Nightingale Faculty of Nursing and Midwifery, King’s College London, London, UK
| | - Marco R Novelli
- Research Department of Pathology, University College London Medical School, London, UK
| | - Robert J C Steele
- Research into Cancer Prevention and Screening, University of Dundee, Dundee, UK
| | - Anne L Thomas
- Leicester Cancer Research Centre, University of Leicester, Leicester, UK
| | - Lisa M Wilde
- Bowel Cancer UK, London, UK
- Atticus Consultants Ltd, Croydon, UK
| | - Richard H Wilson
- Centre for Cancer Research and Cell Biology, Queen’s University Belfast, Belfast, UK
| | - Ian Tomlinson
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
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Ibragimov B, Toesca DAS, Yuan Y, Koong AC, Chang DT, Xing L. Deep 3D Dose Analysis for Prediction of Outcomes After Liver Stereotactic Body Radiation Therapy. MEDICAL IMAGE COMPUTING AND COMPUTER ASSISTED INTERVENTION – MICCAI 2018 2018. [DOI: 10.1007/978-3-030-00934-2_76] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Unkelbach J, Papp D, Gaddy MR, Andratschke N, Hong T, Guckenberger M. Spatiotemporal fractionation schemes for liver stereotactic body radiotherapy. Radiother Oncol 2017; 125:357-364. [PMID: 28951010 PMCID: PMC5705331 DOI: 10.1016/j.radonc.2017.09.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 09/01/2017] [Accepted: 09/03/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE Dose prescription in stereotactic body radiotherapy (SBRT) for liver tumors is often limited by the mean liver dose. We explore the concept of spatiotemporal fractionation as an approach to facilitate further dose escalation in liver SBRT. MATERIALS AND METHODS Spatiotemporal fractionation schemes aim at partial hypofractionation in the tumor along with near-uniform fractionation in normal tissues. This is achieved by delivering distinct dose distributions in different fractions, which are designed such that each fraction delivers a high single fraction dose to complementary parts of the tumor while creating a similar dose bath in the surrounding noninvolved liver. Thereby, higher biologically effective doses (BED) can be delivered to the tumor without increasing the mean BED in the liver. Planning of such treatments is performed by simultaneously optimizing multiple dose distributions based on their cumulative BED. We study this concept for five liver cancer patients with different tumor geometries. RESULTS Spatiotemporal fractionation presents a method of increasing the ratio of prescribed tumor BED to mean BED in the noninvolved liver by approximately 10-20%, compared to conventional SBRT using identical fractions. CONCLUSIONS Spatiotemporal fractionation may reduce the risk of liver toxicity or facilitate dose escalation in liver SBRT in circumstances where the mean dose to the non-involved liver is the prescription-limiting factor.
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Affiliation(s)
- Jan Unkelbach
- Department of Radiation Oncology, University Hospital Zürich, Switzerland.
| | - Dávid Papp
- Department of Mathematics, North Carolina State University, Raleigh, USA
| | - Melissa R Gaddy
- Department of Mathematics, North Carolina State University, Raleigh, USA
| | | | - Theodore Hong
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, USA
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Riou O, Azria D, Mornex F. [Stereotactic body radiotherapy for liver tumors: State of the art]. Cancer Radiother 2017; 21:563-573. [PMID: 28888744 DOI: 10.1016/j.canrad.2017.07.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 01/04/2023]
Abstract
Thanks to the improvement in radiotherapy physics, biology, computing and imaging, patients presenting with liver tumors can be efficiently treated by radiation. Radiotherapy has been included in liver tumors treatment guidelines at all disease stages. Liver stereotactic radiotherapy has to be preferred to standard fractionated radiotherapy whenever possible, as potentially more efficient because of higher biological equivalent dose. Liver stereotactic radiotherapy planning and delivery require extensive experience and optimal treatment quality at every step, thus limiting its availability to specialized centres. Multicentre studies are difficult to develop due to a large technical heterogeneity. Respiratory management, image guidance and immobilization are considerations as important as machine type. The use of multimodal planning imaging is compulsory to achieve expected contouring quality. Treatment efficacy is difficult to assess following liver stereotactic radiotherapy, but local control is high and toxicity unusual. As a consequence, liver stereotactic radiotherapy is part of multimodal and multidisciplinary management of liver tumors.
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Affiliation(s)
- O Riou
- Département de cancérologie radiothérapie, ICM-Val d'Aurelle, rue de la Croix-Verte, 34298 Montpellier, France; Institut de recherche en cancérologie de Montpellier (IRCM), avenue des Apothicaires, 34298 Montpellier cedex 05, France; Inserm U1194, avenue des Apothicaires, 34298 Montpellier cedex 05, France; Université de Montpellier 1, avenue des Apothicaires, 34298 Montpellier cedex 05, France.
| | - D Azria
- Département de cancérologie radiothérapie, ICM-Val d'Aurelle, rue de la Croix-Verte, 34298 Montpellier, France; Institut de recherche en cancérologie de Montpellier (IRCM), avenue des Apothicaires, 34298 Montpellier cedex 05, France; Inserm U1194, avenue des Apothicaires, 34298 Montpellier cedex 05, France; Université de Montpellier 1, avenue des Apothicaires, 34298 Montpellier cedex 05, France
| | - F Mornex
- Département de radiothérapie-oncologie, centre hospitalier Lyon sud, 165, chemin du Grand-Revoyet, 69310 Pierre-Bénite, France; EMR 3738, université Claude-Bernard Lyon-1, domaine Rockefeller, 8, avenue Rockefeller, 69373 Lyon cedex 08, France
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Cha YJ, Kim MS, Jang WI, Seo YS, Cho CK, Yoo HJ, Paik EK. Stereotactic body radiation therapy for liver oligo-recurrence and oligo-progression from various tumors. Radiat Oncol J 2017; 35:172-179. [PMID: 28712274 PMCID: PMC5518460 DOI: 10.3857/roj.2017.00024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/24/2017] [Accepted: 06/02/2017] [Indexed: 12/29/2022] Open
Abstract
Purpose To evaluate the outcomes of stereotactic body radiation therapy (SBRT) for patients with liver oligo-recurrence and oligo-progression from various primary tumors. Materials and Methods Between 2002 and 2013, 72 patients with liver oligo-recurrence (oligo-metastasis with a controlled primary tumor) and oligo-progression (contradictory progression of a few sites of disease despite an overall tumor burden response to therapy) underwent SBRT. Of these, 9 and 8 patients with uncontrollable distant metastases and patients immediate loss to follow-up, respectively, were excluded. The total planning target volume was used to select the SBRT dose (median, 48 Gy; range, 30 to 60 Gy, 3–4 fractions). Toxicity was evaluated using the Common Toxicity Criteria for Adverse Events v4.0. Results We evaluated 55 patients (77 lesions) treated with SBRT for liver metastases. All patients had controlled primary lesions, and 28 patients had stable lesions at another site (oligo-progression). The most common primary site was the colon (36 patients), followed by the stomach (6 patients) and other sites (13 patients). The 2-year local control and progression-free survival rates were 68% and 22%, respectively. The 2- and 5-year overall survival rates were 56% and 20%, respectively. The most common adverse events were grade 1–2 fatigue, nausea, and vomiting; no grade ≥3 toxicities were observed. Univariate analysis revealed that oligo-progression associated with poor survival. Conclusion SBRT for liver oligo-recurrence and oligo-progression appears safe, with similar local control rates. For liver oligo-progression, criteria are needed to select patients in whom improved overall survival can be expected through SBRT.
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Affiliation(s)
- Yu Jin Cha
- Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Mi-Sook Kim
- Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Won-Il Jang
- Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Young Seok Seo
- Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Chul Koo Cho
- Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Hyung Jun Yoo
- Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Eun Kyung Paik
- Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
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Amendola B, Amendola M, Blanco JM, Perez N, Wu X. Radiosurgery for liver metastases. A single institution experience. Rep Pract Oncol Radiother 2017; 22:118-125. [PMID: 28490982 DOI: 10.1016/j.rpor.2016.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 08/12/2016] [Accepted: 10/09/2016] [Indexed: 02/07/2023] Open
Abstract
AIM To report our initial results on the use of radiosurgery for treatment of liver metastases. BACKGROUND In recent years there has been increasing interest in the use of stereotactic body radiation therapy to treat metastatic disease to the liver as an alternative to interventional procedures. MATERIALS AND METHODS Between November 2008 and June 2015 a total of 36 LINAC-based radiosurgeries using VMAT were performed in 27 patients with liver metastases from 10 different primary sites. Doses ranged from 21 Gy to 60 Gy in 1 to 5 fractions. In all patients the volume of liver receiving less than 15 Gy was more than 700 cc. The volume treated with the prescription dose ranged from 1 cc to 407 cc with a median of 58 cc. All patients but one received systemic treatment. RESULTS Overall median survival for the entire group is 9 months (ranging from 1 to 67 months). Local recurrence free survival ranged from 4 to 67 months with a median of 14 months. Twenty patients (80%) survived more than six months. Three patients treated for oligometastases were alive after 3 years. Grade 0 toxicity was encountered in 22/27 patients, Grade 1 toxicity in 5/27 and only 1/27 patient experienced Grade 2 toxicity. No patient experienced grade 3-4 toxicity. CONCLUSION Based on these initial results we conclude that SBRT for treating liver metastases with radiosurgery is safe and effective for treating one or multiple lesions as long as normal tissue constraints for liver are respected.
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Affiliation(s)
- Beatriz Amendola
- Innovative Cancer Institute, South Miami, FL 33143, United States
| | - Marco Amendola
- Innovative Cancer Institute, South Miami, FL 33143, United States
| | - Jesús M Blanco
- Innovative Cancer Institute, South Miami, FL 33143, United States
| | - Naipy Perez
- Innovative Cancer Institute, South Miami, FL 33143, United States
| | - Xiaodong Wu
- Innovative Cancer Institute, South Miami, FL 33143, United States
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Michel R, Françoise I, Laure P, Anouchka M, Guillaume P, Sylvain K. Dose to organ at risk and dose prescription in liver SBRT. Rep Pract Oncol Radiother 2017; 22:96-102. [PMID: 28490979 DOI: 10.1016/j.rpor.2017.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 02/07/2017] [Accepted: 03/13/2017] [Indexed: 12/11/2022] Open
Abstract
Stereotactic body radiation therapy (SBRT) is delivered in a curative intent to many primary and secondary tumors. Concerning liver metastasis, SBRT can be safely delivered using one to five fractions. An excellent local control is obtained with doses from 20 to 60 Gy. For primary hepatic tumors, results are also good, but the risk of hepatic toxicity related to liver pre-existent pathology must be taken into account. Radiation induced liver disease (RILD) is not frequent in its classical presentation, but modifications of liver enzymes are often observed. Other toxicities of SBRT on the duodenum, small bowel and biliary tract are also described. With respect to contraindications and dose limitations on surrounding structures, SBRT is well tolerated and takes place among curative treatment of liver tumors, as surgery, radiofrequency and embolization.
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Affiliation(s)
- Rives Michel
- Institut Claudius Regaud, 1 avenue Irène Joliot-Curie, 31059 Toulouse Cedex, France
| | - Izar Françoise
- Institut Claudius Regaud, 1 avenue Irène Joliot-Curie, 31059 Toulouse Cedex, France
| | - Parent Laure
- Institut Claudius Regaud, 1 avenue Irène Joliot-Curie, 31059 Toulouse Cedex, France
| | - Modesto Anouchka
- Institut Claudius Regaud, 1 avenue Irène Joliot-Curie, 31059 Toulouse Cedex, France
| | - Portier Guillaume
- Department of Digestive Surgery, Purpan University Hospital, Toulouse, France
| | - Kirzin Sylvain
- Department of Digestive Surgery, Purpan University Hospital, Toulouse, France
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Riou O, Llacer Moscardo C, Fenoglietto P, Deshayes E, Tetreau R, Molinier J, Lenglet A, Assenat E, Ychou M, Guiu B, Aillères N, Bedos L, Azria D. SBRT planning for liver metastases: A focus on immobilization, motion management and planning imaging techniques. Rep Pract Oncol Radiother 2017; 22:103-110. [PMID: 28490980 DOI: 10.1016/j.rpor.2017.02.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 01/05/2017] [Accepted: 02/25/2017] [Indexed: 02/08/2023] Open
Abstract
AIM To evaluate the different techniques used for liver metastases Stereotactic Body Radiation Therapy (SBRT) planning. We especially focused on immobilization devices, motion management and imaging used for contouring. BACKGROUND Although some guidelines exist, there is no consensus regarding the minimal requirements for liver SBRT treatments. MATERIALS AND METHODS We reviewed the main liver metastases SBRT publications and guidelines; and compared the techniques used for immobilization, motion management, margins and imaging. RESULTS There is a wide variety of techniques used for immobilization, motion management and planning imaging. CONCLUSIONS We provide a subjective critical analysis of minimal requirements and ideal technique for liver SBRT planning.
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Affiliation(s)
- Olivier Riou
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - Carmen Llacer Moscardo
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - Pascal Fenoglietto
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - Emmanuel Deshayes
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - Raphaël Tetreau
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - Jessica Molinier
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - Alexis Lenglet
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - Eric Assenat
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France.,CHU Saint Eloi, 80 Avenue Augustin Fliche, 34090 Montpellier, France
| | - Marc Ychou
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France.,CHU Saint Eloi, 80 Avenue Augustin Fliche, 34090 Montpellier, France
| | - Boris Guiu
- CHU Saint Eloi, 80 Avenue Augustin Fliche, 34090 Montpellier, France
| | - Norbert Aillères
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - Ludovic Bedos
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
| | - David Azria
- Institut Régional du Cancer de Montpellier, ICM-Val d'Aurelle, Rue de la Croix Verte, Montpellier, France
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Kim M, Craft DL. Within the next five years, most radiotherapy treatment schedules will be designed using spatiotemporal optimization. Med Phys 2017; 43:2009. [PMID: 27147312 DOI: 10.1118/1.4943383] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Minsun Kim
- Radiation Oncology, University of Washington, Seattle, Washington 98195-6043 (Tel: 206-598-8133; E-mail: )
| | - David L Craft
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts 02114 (Tel: 617-724-9528; E-mail: )
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Karlsson P, Lundstedt D. Radiotherapy for Metastatic Lesions. Breast Cancer 2017. [DOI: 10.1007/978-3-319-48848-6_57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Rubio C, Hernando-Requejo O, Zucca Aparicio D, ALlona Krauel M, López Gonzalez M, Pérez JM, Sánchez Saugar E, Fernández Letón P. Image guided SBRT for multiple liver metastases with ExacTrac ® Adaptive Gating. Rep Pract Oncol Radiother 2016; 22:150-157. [PMID: 28490986 DOI: 10.1016/j.rpor.2016.07.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 06/08/2016] [Accepted: 07/23/2016] [Indexed: 12/31/2022] Open
Abstract
AIM To report the outcome and toxicity of sequential stereotactic body radiotherapy (SBRT) for multiple liver metastases in patients treated with ExacTrac Adaptive Gating. BACKGROUND In selected patients with a limited number of liver metastases, SBRT has been evaluated as a safe and effective treatment, with minimal toxicity and high rates of local control. MATERIALS AND METHODS From April 2008 to October 2013, 21 patients with multiple (3-14) liver metastases (n = 101) were treated sequentially with SBRT at our institution. Maximum tumor diameter was 7.5 cm. Prior to treatment, internal markers were placed inside or near the tumor. CT or PET-CT simulation was used for the definition of gross tumor volume (GTV). Median planning target volume was 32.3 cc (3.6-139.3 cc). Treatment consisted of 3 fractions (12-20 Gy/fraction) or 5 fractions (10 Gy/fraction), prescribed to the 90-95% of the PTV volume. Daily intra-fraction image guidance was performed with ExacTrac Adaptive Gating. Regular follow-up included CT or PET-CT imaging. RESULTS After a median of 23.2 months, the estimated local control rate was 94.4%, 80.6%, 65% and 65% after 1, 2, 3 and 4 years; the median overall survival was 62 months (95% CI 49.12-74.87) and the actuarial survival reached at 60 months was 57.6%. The univariate data analysis revealed that only primary histology other than colorectal adenocarcinoma was shown as an independent significant prognostic factor for local control (p = 0.022). Number of treated metastases did not modify significantly the overall survival (p = 0.51). No toxicity higher than G3 (1 patient with chest wall pain) and no radiation-induced liver disease were observed. CONCLUSIONS Sequential SBRT with ExacTrac Adaptive Gating for multiple liver metastases can be considered an effective, safe therapeutic option, with a low treatment-related toxicity. Excellent rates of local control and survival were obtained.
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Affiliation(s)
- Carmen Rubio
- Departments of Radiation Oncology, HM Hospitales, Spain
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Heinz C, Gerum S, Freislederer P, Ganswindt U, Roeder F, Corradini S, Belka C, Niyazi M. Feasibility study on image guided patient positioning for stereotactic body radiation therapy of liver malignancies guided by liver motion. Radiat Oncol 2016; 11:88. [PMID: 27350636 PMCID: PMC4924279 DOI: 10.1186/s13014-016-0662-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 06/19/2016] [Indexed: 02/01/2023] Open
Abstract
Background Fiducial markers are the superior method to compensate for interfractional motion in liver SBRT. However this method is invasive and thereby limits its application range. In this retrospective study, the compensation method for the interfractional motion using fiducial markers (gold standard) was compared to a new non-invasive approach, which does rely on the organ motion of the liver and the relative tumor position within this volume. Methods We analyzed six patients (3 m, 3f) treated with SBRT in 2014. After fiducial marker implantation, all patients received a treatment CT (free breathing, without abdominal compression) and a 4D-CT (consisting of 10 respiratory phases). For all patients the gross tumor volumes (GTVs), internal target volume (ITV), planning target volume (PTV), internal marker target volumes (IMTVs) and the internal liver target volume (ILTV) were delineated based on the CT and 4D-CT images. CBCT imaging was used for the standard treatment setup based on the fiducial markers. According to the patient coordinates the 3 translational compensation values (tx, ty, tz) for the interfractional motion were calculated by matching the blurred fiducial markers with the corresponding IMTV structures. 4 observers were requested to recalculate the translational compensation values for each CBCT (31) based on the ILTV structures. The differences of the translational compensation values between the IMTV and ILTV approach were analyzed. Results The magnitude of the mean absolute 3D registration error with regard to the gold standard overall patients and observers was 0.50 cm ± 0.28 cm. Individual registration errors up to 1.3 cm were observed. There was no significant overall linear correlation between the respiratory motion and the registration error of the ILTV approach. Conclusions Two different methods to calculate the translational compensation values for interfractional motion in stereotactic liver therapy were evaluated. The registration accuracy of the ILTV approach is mainly limited by the non-rigid behavior of the liver and the individual registration experience of the observer. The ILTV approach lacks the accuracy that would be desired for stereotactic radiotherapy of the liver.
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Affiliation(s)
- Christian Heinz
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany.
| | - Sabine Gerum
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
| | | | - Ute Ganswindt
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
| | - Falk Roeder
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
| | | | - Claus Belka
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
| | - Maximilian Niyazi
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
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Clinical results of mean GTV dose optimized robotic guided SBRT for liver metastases. Radiat Oncol 2016; 11:74. [PMID: 27236333 PMCID: PMC4884398 DOI: 10.1186/s13014-016-0652-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 05/18/2016] [Indexed: 02/07/2023] Open
Abstract
Background We retrospectively evaluated the efficacy and toxicity of gross tumor volume (GTV) mean-dose-optimized and real-time motion-compensated robotic stereotactic body radiation therapy (SBRT) in the treatment of liver metastases. Methods Between March 2011 and July 2015, 52 patients were treated with SBRT for a total of 91 liver metastases (one to four metastases per patient) with a median GTV volume of 12 cc (min 1 cc, max 372 cc). The optimization of mean GTV dose was prioritized during treatment planning at the potential cost of planning target volume (PTV) coverage reduction while adhering to safe normal tissue constraints. The delivered median GTV biological effective dose (BED10) was 142.1 Gy10 (range, 60.2 Gy10 –165.3 Gy10) and the prescribed PTV BED10 ranged from 40.6 Gy10 to 112.5 Gy10 (median, 86.1 Gy10). We analyzed local control (LC), progression-free interval (PFI), overall survival (OS), and toxicity. Results Median follow-up was 17 months (range, 2–49 months). The 2-year actuarial LC, PFI, and OS rates were 82.1, 17.7, and 45.0 %, and the median PFI and OS were 9 and 23 months, respectively. In univariate analysis histology (p < 0.001), PTV prescription BED10 (HR 0.95, CI 0.91–0.98, p = 0.002) and GTV mean BED10 (HR 0.975, CI 0.954–0.996, p = 0.011) were predictive for LC. Multivariate analysis showed that only extrahepatic disease status at time of treatment was a significant factor (p = 0.033 and p = 0.009, respectively) for PFI and OS. Acute nausea or fatigue grade 1 was observed in 24.1 % of the patients and only 1 patient (1.9 %) had a side effect of grade ≥ 2. Conclusions Robotic real-time motion-compensated SBRT is a safe and effective treatment for one to four liver metastases. Reducing the PTV prescription dose and keeping a high mean GTV dose allowed the reduction of toxicity while maintaining a high local control probability for the treated lesions.
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Wilson A, Ronnekliev-Kelly S, Winner M, Pawlik TM. Liver-Directed Therapy in Metastatic Colorectal Cancer. CURRENT COLORECTAL CANCER REPORTS 2016. [DOI: 10.1007/s11888-016-0311-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Crane CH, Koay EJ. Solutions that enable ablative radiotherapy for large liver tumors: Fractionated dose painting, simultaneous integrated protection, motion management, and computed tomography image guidance. Cancer 2016; 122:1974-86. [PMID: 26950735 DOI: 10.1002/cncr.29878] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 12/13/2022]
Abstract
The emergence and success of stereotactic body radiation therapy (SBRT) for the treatment of lung cancer have led to its rapid adoption for liver cancers. SBRT can achieve excellent results for small liver tumors. However, the vast majority of physicians interpret SBRT as meaning doses of radiation (range, 4-20 Gray [Gy]) that may not be ablative but are delivered within about 1 week (ie, in 3-6 fractions). Adherence to this approach has limited the effectiveness of SBRT for large liver tumors (>7 cm) because of the need to reduce doses to meet organ constraints. The prognosis for patients who present with large liver tumors is poor, with a median survival ≤12 months, and most of these patients die from tumor-related liver failure. Herein, the authors present a comprehensive solution to achieve ablative SBRT doses for patients with large liver tumors by using a combination of classic, modern, and novel concepts of radiotherapy: fractionation, dose painting, motion management, image guidance, and simultaneous integrated protection. The authors discuss these concepts in the context of large, inoperable liver tumors and review how this approach can substantially prolong survival for patients, most of whom otherwise have a very poor prognosis and few effective treatment options. Cancer 2016;122:1974-86. © 2016 American Cancer Society.
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Affiliation(s)
- Christopher H Crane
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Eugene J Koay
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
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Fukumitsu N, Okumura T, Takizawa D, Makishima H, Numajiri H, Murofushi K, Ohnishi K, Mizumoto M, Aihara T, Ishikawa H, Tsuboi K, Sakurai H. Proton beam therapy for metastatic liver tumors. Radiother Oncol 2015; 117:322-7. [PMID: 26385268 DOI: 10.1016/j.radonc.2015.09.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 09/01/2015] [Accepted: 09/06/2015] [Indexed: 12/26/2022]
Abstract
PURPOSE The purpose of this study was to investigate the safety and efficacy of proton beam therapy (PBT) for the treatment of metastatic liver tumors. MATERIAL AND METHODS A total of 140 patients with liver metastasis who received PBT were retrospectively investigated. The main primary tumor sites were the colorectum (60) and the pancreas (19). RESULTS One hundred thirty-three patients (95%) completed treatment. Two patients experienced late adverse effects (rib fracture and cholangitis). The 5-year overall survival (OS) rate was 24%. In the 85 patients with lesions confined to the liver, the 5-year OS rate of was 28%, and in the 55 patients with lesions both inside and outside the liver, it was 16% (P=0.007). Among the patients with lesions confined to the liver, the 5-year OS rate of the 62 patients who received curative treatment was 30%, and that of the 23 patients who received palliative treatment, 23% (P=0.016). Multivariate analysis showed that the treatment strategy (curative and palliative) alone was associated with the OS rate (P=0.02). CONCLUSION PBT is a potentially safe and effective treatment for metastatic liver tumors.
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Affiliation(s)
| | | | - Daichi Takizawa
- Proton Medical Research Center, University of Tsukuba, Japan
| | | | - Haruko Numajiri
- Proton Medical Research Center, University of Tsukuba, Japan
| | - Keiko Murofushi
- Proton Medical Research Center, University of Tsukuba, Japan
| | - Kayoko Ohnishi
- Proton Medical Research Center, University of Tsukuba, Japan
| | | | - Teruhito Aihara
- Proton Medical Research Center, University of Tsukuba, Japan
| | | | - Koji Tsuboi
- Proton Medical Research Center, University of Tsukuba, Japan
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Abstract
Purpose. To study radiological response to stereotactic radiotherapy for focal liver tumors. Materials and Methods. In this IRB-approved, HIPAA-compliant study CTs of 68 consecutive patients who underwent stereotactic radiotherapy for liver tumors between 01/2006 and 01/2010 were retrospectively reviewed. Two independent reviewers evaluated lesion volume and enhancement pattern of the lesion and of juxtaposed liver parenchyma. Results. 36 subjects with hepatocellular carcinoma (HCC), 25 with liver metastases, and seven with cholangiocarcinoma (CCC) were included in study. Mean follow-up time was 5.6 ± 7.1 months for HCC, 6.4 ± 5.1 months for metastases, and 10.1 ± 4.8 months for the CCC. Complete response was seen in 4/36 (11.1%) HCCs and 1/25 (4%) metastases. Partial response (>30% decrease in long diameter) was seen in 25/36 (69%) HCCs, 14/25 (58%) metastases, and 7/7 (100%) of CCCs. Partial response followed by local recurrence (>20% increase in long diameter from nadir) occurred in 2/36 (6%) HCCs and 4/25 (17%) metastases. Liver parenchyma adjacent to the lesion demonstrated a prominent halo of delayed enhancement in 27/36 (78%) of HCCs, 19/21 (91%) of metastases, and 7/7 (100%) of CCCs. Conclusion. Sustainable radiological partial response to stereotactic radiotherapy is most frequent outcome seen in liver lesions. Prominent halo of delayed enhancement of the adjacent liver is frequent finding.
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