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Zhang X, Shi J, Wu X, Li L, Sun W, Zou Y, Chen G, Wu S, Duan S. Dosimetric Comparison of Commonly Used Volumetric Modulated Arc Therapy Field Arrangements Based on Flattening Filter-Free Beams for Synchronous Bilateral Breast Carcinoma Radiation Therapy. Pract Radiat Oncol 2024; 14:e190-e202. [PMID: 37967748 DOI: 10.1016/j.prro.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/14/2023] [Accepted: 11/05/2023] [Indexed: 11/17/2023]
Abstract
PURPOSE Flattening filter-free (FFF)-based volumetric modulated arc therapy (VMAT) has been shown to be feasible and significantly improves treatment efficiency and lung protection for synchronous bilateral breast irradiation (SBBI). This research compared the commonly used VMAT field arrangements using FFF beams. METHODS Twenty-eight patients underwent SBBI were retrospectively enrolled to design irradiation plans using tangential arc VMAT (taVMAT), half arc VMAT (haVMAT), and large arc VMAT (laVMAT). Dosimetric and delivery parameters of all designed plans were recorded and compared. RESULTS Comparable target volume coverage was observed for all field arrangements. taVMAT significantly reduced the dose to spinal cord and the volume covered by 5 Gy (V5Gy) and V7Gy of the lungs while decreasing the conformity index of the target volume. It also increased the volume covered by 105% of the prescription dose (V105%) and V107% of the target volume. haVMAT considerably decreased V20 Gy and V30 Gy of the lungs, mean dose (Dmean) and V30 Gy of the heart and the liver. It also notably reduced Dmean and V40 Gy of the left anterior descending coronary artery while increasing the beam-on time. laVMAT significantly reduced the mean treatment time (range, 113-117 seconds) compared with the other field arrangements. CONCLUSIONS There were distinct differences in various dosimetric and delivery parameters for different field arrangements, highlighting the importance of selecting the appropriate field arrangement based on specific treatment goals and considerations. This study contributes valuable insights into the use of FFF-based VMAT techniques in SBBI.
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Affiliation(s)
- Xingxing Zhang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Juntian Shi
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiuxiu Wu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Liting Li
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Wei Sun
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yongmei Zou
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Guoquan Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Shaokun Wu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Song Duan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China; Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.
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Djoumessi Zamo FC, Njeh CF, Colliaux A, Blot-Lafond V, Moyo MN. Patient specific quality assurance of volumetric modulated arc therapy of synchronous bilateral breast cancer. Med Dosim 2023; 49:177-184. [PMID: 38071091 DOI: 10.1016/j.meddos.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/29/2023] [Accepted: 11/05/2023] [Indexed: 08/04/2024]
Abstract
Synchronous bilateral breast cancers (SBBC) present a considerable issue in external beam radiotherapy because of large fields size and large target volumes. Mono-isocentric volumetric modulated arc therapy (VMAT) appears as an appropriate irradiation technique for these types of tumors. The aim of this study was to demonstrate the utility of a 3D DVH pretreatment quality assurance program in VMAT of SBBC cases. Twenty SBBC patients who underwent radiation therapy in our department were retrospectively enrolled in this study. Fifteen patients were treated exclusively to the mammary glands. Five patients benefited from a dose boost on the tumor bed (60Gy). Nine patients were irradiated on the supraclavicular nodes (50Gy). This dose was delivered in 25 fractions and integrated boost was used when appropriate. Depending on the complexity of the treatment plans; 2 or 4 arcs VMAT plans were used in a mono-isocentric technique. The patient specific quality assurance (PSQA) was evaluated using COMPASS measured data, COMPASS reconstructed (CR) and COMPASS computed (CC) dose compared to treatment planning system (TPS) dose. Clinical evaluation was based on DVH metrics for target volumes and organ at risks. The maximum average dose deviation between TPS, CC, and CR was below 3%. The paired t-test between TPS, CC, and CR shows a strong agreement (p < 0.001). The 3DVH dose distribution comparison between TPS and COMPASS were also performed with good gamma score for global analysis. COMPASS was successfully evaluated as a 3DVH pretreatment system for SBBC despite the large fields size and complex target volumes. It allows the verification of the plan in 3D patient anatomy and the evaluation of dose discrepancies.
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Affiliation(s)
- Francis C Djoumessi Zamo
- Medical Physicist, Centre de Radiothérapie Angouleme, Charente, France; Centre de Physique Atomique Moléculaire et Optique, Douala, Cameroon
| | - Christopher F Njeh
- Department of Radiation Oncology, School of Medicine, Indiana University, IN, 46202, USA.
| | - Anthony Colliaux
- Medical Physicist, Centre de Radiothérapie Angouleme, Charente, France
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Wu X, Huang J, Lin X, Zhang X, Lu H, Sun W, Duan S, Shi J, Huang X. Dosimetric Comparison of Postmastectomy Radiotherapy Plans for Synchronous Bilateral Breast Cancer, Including Regional Lymph Node Irradiation. Technol Cancer Res Treat 2023; 22:15330338231214449. [PMID: 37964574 PMCID: PMC10652810 DOI: 10.1177/15330338231214449] [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: 07/27/2023] [Revised: 10/03/2023] [Accepted: 10/25/2023] [Indexed: 11/16/2023] Open
Abstract
BACKGROUND To investigate the optimal radiotherapy plans for synchronous bilateral breast cancer (SBBC) patients receiving postmastectomy radiotherapy (PMRT), including regional lymph node irradiation (RNI). METHODS For 10 SBBC patients who underwent bilateral mastectomy and received bilateral PMRT with RNI, 3 integrally optimized plans with a single isocenter were designed for each patient in this retrospective study: intensity-modulated radiation therapy (IMRT) with 9 fixed beams (9F-IMRT), volumetric-modulated arc therapy (VMAT) with 2 pairs of half arcs (2F-VMAT), VMAT with 2 pairs of outer tangential arcs and 1 pair of 200-degree arcs (3F-VMAT). The paired t-test (in the case of normal variables) and Friedman's test (in the case of nonnormal variables) were applied to compare the planning target volumes (PTVs) and organs at risk (OARs) values of the 3 techniques. RESULTS The 3 techniques provided adequate target dose coverage and comparable results for PTVs. For OARs, 3F-VMAT yielded the lowest mean or median values of the left lung (15.02 ± 1.57 Gy) and right lung (14.91 ± 1.14 Gy), heart (6.19 (1.96) Gy), coronary artery (15.96 ± 5.76 Gy) and liver (8.10 ± 2.70 Gy) which were significantly different from those of 9F-IMRT and 2F-VMAT. The percentages of volume at various doses (V5, V10, V20, and V30) of 3F-VMAT plans were also lower than or comparable with those of 9F-IMRT and 2F-VMAT. The monitor units (MUs) of 3F-VMAT were 31% higher than those of 9F-IMRT and comparable with those of 2F-VMAT; however, there were time savings and halved beam-on times (BOTs) compared to 9F-IMRT. CONCLUSIONS The 3F-VMAT plan yielded comparable target coverage compared with 9F-IMRT and 2F-VMAT, was superior in dose sparing of normal tissues and enabled shorter BOTs, improving treatment efficiency. In our research, 3F-VMAT was the optimal radiotherapy technique for SBBC patients receiving PMRT including RNI.
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Affiliation(s)
- Xiuxiu Wu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jianghua Huang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiao Lin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xingxing Zhang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Huangping Lu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Wei Sun
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Song Duan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Juntian Shi
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiaobo Huang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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Quesada S, Fenoglietto P, Gourgou S, Lemanski C, Draghici R, Ailleres N, Prunaretty J, Azria D, Bourgier C. Efficacy, safety, and feasibility of volumetric modulated arc therapy for synchronous bilateral breast cancer management. Front Oncol 2022; 12:967479. [PMID: 36059658 PMCID: PMC9436014 DOI: 10.3389/fonc.2022.967479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/02/2022] [Indexed: 11/13/2022] Open
Abstract
PurposeVolumetric Modulated Arc Therapy (VMAT) exhibits potent advantages regarding target volume coverage and protection of organs at risk, notably in the context of anatomical constraints. Nevertheless, reports concerning VMAT for the treatment of synchronous bilateral breast cancers (SBBC) have been scarce to date. As such, we conducted this observational study to assess efficacy, safety and feasibility of VMAT in SBBC.Materials and MethodsFrom August 2011 to December 2017, 54 consecutive patients with SBBC with or without axillary nodes involvement underwent a treatment protocol containing radiotherapy using VMAT. A total dose (TD) of 52.2Gy in 29 fractions was delivered to breast and internal mammary chain (IMC) nodes Planning Target Volume (PTV) plus, if applicable, a TD of 49.3Gy in 29 fractions to the supra- and infra-clavicular nodes PTV and a TD of 63.22Gy in 29 fractions to tumor boost PTV. Lungs, heart, esophagus, trachea, liver, thyroid and spinal cord were considered as organs at risk. VMAT feasibility and organ at risk sparing were evaluated by treatments planning of the 20 first enrolled patients. Tolerance and patients’ outcome were prospectively monitored by acute/late toxicities records and by the analysis of overall survival (OS), locoregional recurrence-free survival (LRFS) and recurrence-free survival (RFS).ResultsBreast, supraclavicular nodes and boost PTV coverage was adequate with at least 98% of PTV encompassed by more than 95% of the prescribed dose. Less than 90% of IMC PTV was encompassed by 95% of the prescribed dose. Mean lung dose was 12.3Gy (range: 7.7 – 18.7); mean heart dose was 10.7Gy (range: 6.2 – 22.3). Concerning acute toxicities, only 2 patients experienced grade 3 skin toxicity (3.7%) and only 1 patient developed grade 1 pneumonitis. After a median follow-up of 5.3 years, grade 2 fibrosis and/or shrinking was observed in 5 patients (10%), and grade 3 fibrosis in 1 patients (2%). The 5-year LRFS-rate, RFS-rate and OS were 98% [95% CI= 86.12-99.70%], 96% [95% CI= 84.63-98.96%] and 100%, respectively.
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Affiliation(s)
- Stanislas Quesada
- Faculty of Medicine, University of Montpellier, Montpellier, France
- Department of Radiation Oncology, Montpellier Cancer Institute (ICM), Montpellier, France
| | - Pascal Fenoglietto
- Department of Radiation Oncology, Montpellier Cancer Institute (ICM), Montpellier, France
| | - Sophie Gourgou
- Institute of Cancer Research of Montpellier (IRCM), Montpellier, France
| | - Claire Lemanski
- Department of Radiation Oncology, Montpellier Cancer Institute (ICM), Montpellier, France
| | - Roxana Draghici
- Department of Radiation Oncology, Montpellier Cancer Institute (ICM), Montpellier, France
| | - Norbert Ailleres
- Department of Radiation Oncology, Montpellier Cancer Institute (ICM), Montpellier, France
| | - Jessica Prunaretty
- Department of Radiation Oncology, Montpellier Cancer Institute (ICM), Montpellier, France
| | - David Azria
- Faculty of Medicine, University of Montpellier, Montpellier, France
- Department of Radiation Oncology, Montpellier Cancer Institute (ICM), Montpellier, France
- Institute of Cancer Research of Montpellier (IRCM), Montpellier, France
| | - Céline Bourgier
- Faculty of Medicine, University of Montpellier, Montpellier, France
- Department of Radiation Oncology, Montpellier Cancer Institute (ICM), Montpellier, France
- Institute of Cancer Research of Montpellier (IRCM), Montpellier, France
- *Correspondence: Céline Bourgier,
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Maria P, Theodoros S, Anna Z, Michael P, Vassilis K, Kalliopi P. Synchronous bilateral chest wall irradiation with regional nodal irradiation: A literature review of techniques and a case study. Phys Med 2022; 101:50-61. [PMID: 35961182 DOI: 10.1016/j.ejmp.2022.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 06/03/2022] [Accepted: 07/26/2022] [Indexed: 10/15/2022] Open
Abstract
The optimal radiotherapy technique for patients requiring both breasts or chest walls simultaneous irradiation with or without regional nodal irradiation is currently under investigation. In the last decade several publications present case reports and case series of patients treated with adjuvant radiotherapy in both breasts or chest walls for synchronous bilateral breast cancer (SBBC) with modern radiotherapy techniques. This article presents a systematic review of relevant literature as well as a case report of a SBBC patient who received bilateral chest wall radiotherapy with regional nodal irradiation at our institution with Truebeam - Edge Linear Accelerator. Solid evidence is provided that the practice of avoiding adjuvant radiotherapy in SBBC out of fear of toxicity with older radiotherapy techniques is outdated. Modern techniques can safely and effectively deliver treatment to patients requiring both sides irradiation and even in mastectomy patients in need of regional nodal irradiation.
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Affiliation(s)
- Protopapa Maria
- Mediterraneo General Hospital, Radiation Oncology and Radiosurgery Department, Ilias st. 8-12, Glyfada, Greece.
| | - Stroumbinis Theodoros
- Mediterraneo General Hospital, Radiation Oncology and Radiosurgery Department, Ilias st. 8-12, Glyfada, Greece
| | - Zygogianni Anna
- National and Kapodistrian University of Athens, Medical School, 1st Dpt of Radiology, RT Unit, Aretaieion University Hospital, Greece
| | - Psarras Michael
- Mediterraneo General Hospital, Radiation Oncology and Radiosurgery Department, Ilias st. 8-12, Glyfada, Greece
| | - Kouloulias Vassilis
- National and Kapodistrian University of Athens, Medical School, 2nd Dpt of Radiology, RT Unit, ATTIKON University Hospital, Greece
| | - Platoni Kalliopi
- National and Kapodistrian University of Athens, Medical School, 2nd Dpt of Radiology, RT Unit, ATTIKON University Hospital, Greece; National and Kapodistrian University of Athens, Medical School, 2nd Dpt of Radiology, Medical Physics Unit, ATTIKON University Hospital, Greece
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6
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Kang SW, Kang S, Lee B, Song C, Eom KY, Jang BS, Kim IA, Kim JS, Cho W, Shin DS, Kim JY, Chung JB. Evaluation of the dosimetric and radiobiological parameters in four radiotherapy regimens for synchronous bilateral breast cancer. J Appl Clin Med Phys 2022; 23:e13706. [PMID: 35727562 PMCID: PMC9359036 DOI: 10.1002/acm2.13706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 05/18/2022] [Accepted: 06/04/2022] [Indexed: 11/25/2022] Open
Abstract
This study is to investigate the optimal treatment option for synchronous bilateral breast cancer (SBBC) by comparing dosimetric and radiobiological parameters of intensity‐modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) plans using single and dual isocenters. Twenty patients with SBBC without lymph node involvement were selected retrospectively. Four treatment plans were generated for each patient using the Eclipse treatment planning system (Varian Medical System, Palo Alto, CA, USA) following two delivery techniques with two isocenter conditions—IMRT using a single isocenter (IMRT_Iso1), VMAT using a single isocenter (VMAT_Iso1), IMRT using dual isocenters (IMRT_Iso2), and VMAT using dual isocenters (VMAT_Iso2). A dose of 42.56 Gy in 16 fractions was prescribed for the planning target volume (PTV). All plans were calculated using the Acuros XB algorithm and a photon optimizer for a 6‐MV beam of a Vital Beam linear accelerator. PTV‐related dosimetric parameters were analyzed. Further, the homogeneity index, conformity index, and conformation number were computed to evaluate plan quality. Dosimetric parameters were also measured for the organs at risk (OARs). In addition, the equivalent uniform dose corresponding to an equivalent dose related to a reference of 2 Gy per fraction, the tumor control probability, and the normal tissue complication probability were calculated based on the dose–volume histogram to investigate the radiobiological impact on PTV and OARs. IMRT_Iso1 exhibited similar target coverage and a certain degree of dosimetric improvement in OAR sparing compared to the other techniques. It also exhibited some radiobiological improvement, albeit insignificant. Although IMRT_Iso1 significantly increased monitor unit compared to VMAT_Iso1, which is the best option in terms of delivery efficiency, there was only a 22% increase in delivery time. Therefore, in conclusion, IMRT_Iso1, the complete treatment of which can be completed using a single setup, is the most effective method for treating SBBC.
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Affiliation(s)
- Sang-Won Kang
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Seonghee Kang
- Department of Radiation Oncology, Seoul National University Hospital, Seoul, Republic of Korea
| | - Boram Lee
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Changhoon Song
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Keun-Yong Eom
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Bum-Sup Jang
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - In Ah Kim
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Jae-Sung Kim
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Woong Cho
- Department of Radiation Oncology, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Dong-Suk Shin
- Proton Therapy Center, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Jin-Young Kim
- Departments of Radiation Oncology, Dongnam Institute of Radiological and Medical Sciences, Busan, Republic of Korea
| | - Jin-Beom Chung
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
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Garda AE, Hunzeker AE, Michel AK, Fattahi S, Shiraishi S, Remmes NB, Schultz HL, Harmsen WS, Shumway DA, Yan ES, Park SS, Mutter RW, Corbin KS. Intensity Modulated Proton Therapy for Bilateral Breast or Chest Wall and Comprehensive Nodal Irradiation for Synchronous Bilateral Breast Cancer: Initial Clinical Experience and Dosimetric Comparison. Adv Radiat Oncol 2022; 7:100901. [PMID: 35647397 PMCID: PMC9133394 DOI: 10.1016/j.adro.2022.100901] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 01/09/2022] [Indexed: 12/14/2022] Open
Abstract
Purpose Synchronous bilateral breast cancer (SBBC) poses distinct challenges for radiation therapy planning. We report our proton therapy experience in treating patients with SBBC. We also provide a dosimetric comparison of intensity modulated proton therapy (IMPT) versus photon therapy. Methods and Materials Patients with SBBC who received IMPT at our institution were retrospectively analyzed. The clinical target volume (CTV) included the breast or chest wall and comprehensive regional lymph nodes, including axilla, supraclavicular fossa, and the internal mammary chain. Intensity modulated proton therapy and volumetric modulated arc therapy (VMAT) plans were generated with the goal that 90% of the CTV would recieve at least 90% of the prescription dose (D90>=90%). Comparisons between modalities were made using the Wilcoxon signed rank test. Physician-reported acute toxic effects and photography were collected at baseline, end of treatment, and each follow-up visit. Results Between 2015 and 2018, 11 patients with SBBC were treated with IMPT. The prescription was 50 Gy in 25 fractions. The median CTV D90 was 99.9% for IMPT and 97.6% for VMAT (P = .001). The mean heart dose was 0.7 Gy versus 7.2 Gy (P = .001), the total lung mean dose was 7.8 Gy versus 17.3 Gy (P = .001), and the total lung volume recieving 20 Gy was 13.0% versus 27.4% (P = .001). The most common acute toxic effects were dermatitis (mostly grade 1-2 with 1 case of grade 3) and grade 1 to 2 fatigue. The most common toxic effects at the last-follow up (median, 32 months) were grade 1 skin hyperpigmentation, superficial fibrosis, and extremity lymphedema. No nondermatologic or nonfatigue adverse events of grade >1 were recorded. Conclusions Bilateral breast and/or chest wall and comprehensive nodal IMPT is technically feasible and associated with low rates of severe acute toxic effects. Treatment with IMPT offered improved target coverage and normal-tissue sparing compared with photon therapy. Long-term follow-up is ongoing to assess efficacy and toxic effects.
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Affiliation(s)
- Allison E. Garda
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | | | - Ann K. Michel
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Sayeh Fattahi
- Mayo Clinic Alix School of Medicine, Rochester, Minnesota
| | - Satomi Shiraishi
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | | | | | - W. Scott Harmsen
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - Dean A. Shumway
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Elizabeth S. Yan
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Sean S. Park
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Robert W. Mutter
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
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Synchronous bilateral breast carcinoma irradiation: A comparative investigation between flattened and unflattened beams. Appl Radiat Isot 2022; 181:110079. [DOI: 10.1016/j.apradiso.2021.110079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/18/2021] [Accepted: 12/21/2021] [Indexed: 12/24/2022]
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9
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Gadea J, Ortiz I, Roncero R, Alastuey I, Mestre F, Aymar N, Maturana JE, Garcia C, Mateu L, Pardo J. Synchronous bilateral breast cancer treated with a 3-week hypofractionated radiotherapy schedule: clinical and dosimetric outcomes. Clin Transl Oncol 2021; 23:1915-1922. [PMID: 33830442 PMCID: PMC8026808 DOI: 10.1007/s12094-021-02600-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/15/2021] [Indexed: 11/20/2022]
Abstract
Background and purpose Synchronous bilateral breast cancer (SBBC) accounts for 1–3.5% of breast cancer patients. The aim of this study was to evaluate dosimetric issues, clinical outcomes, and acute toxicities for SBBC patients receiving synchronous bilateral hypofractionated radiotherapy (SBHRT) and to compare them with patients treated with synchronous bilateral normofractionated RT schedule (SBNRT). Materials and methods From April 2016 to March 2020, 39 SBBC patients were referred to our institution. Patients were divided according to their prescription dose: Group A: 50 Gy/25fx (fractions), B: 60–64 Gy/25fx, C: 40.05 Gy/15fx; D: 48 Gy/15fx. Toxicity was evaluated using Common Terminology Criteria for Adverse Events (CTCAE)v.5.0. Results 34 patients were finally evaluated. Median follow-up was 24 months for NF schedule and 9 months for HF schedule. In the HF schedule, no acute side-effects > G2 were observed and no dermatitis was reported in 6th month´s assessments. 95% of patients have no evidence of disease and only 1 patient presented local relapse in the first mammography after RT. No distant failures or deaths were observed. Regarding dosimetric issues, the inter-patient average Dmean for the heart was: Group A: 5.0 Gy (4.6–5.5), Group B: 4.4 Gy (4.1–5.4), Group C: 4.8 Gy (4.5–5.1) and Group D: 5.3 Gy (4.4–5.6). For the lungs, the inter-patient average Dmean was: Group A: 10.8 Gy (9.8–12.2), Group B: 11.5 Gy (11.3–12), Group C: 9.8 Gy (9.3–10.5) and Group D: 10.5 Gy (10–11.3). Conclusions This is the first study reporting the safety, feasibility, and tolerability of 40.05 Gy/15fx over 3 weeks for the treatment of SBBC patients. Further study with larger accrual is mandatory.
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Affiliation(s)
- J Gadea
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain.
| | - I Ortiz
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain.,Institut d´Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain
| | - R Roncero
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain
| | - I Alastuey
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain.,Institut d´Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain
| | - F Mestre
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain.,Institut d´Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain
| | - N Aymar
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain.,Institut d´Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain
| | - J E Maturana
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain
| | - C Garcia
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain
| | - L Mateu
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain
| | - J Pardo
- Hospital Universitari Son Espases, Radiation Oncology Department, Carretera de Valldemossa, 79, 07020, Palma de Mallorca (Islas Baleares), Spain.,Institut d´Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain.,Hospital Universitari General de Catalunya, Sant Cugat del Vallés, Spain
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Sun T, Lin X, Zhang G, Qiu Q, Li C, Yin Y. Treatment planning comparison of volumetric modulated arc therapy with the trilogy and the Halcyon for bilateral breast cancer. Radiat Oncol 2021; 16:35. [PMID: 33602267 PMCID: PMC7890882 DOI: 10.1186/s13014-021-01763-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 02/11/2021] [Indexed: 12/12/2022] Open
Abstract
Background The Halcyon is a new machine from the Varian company. The purpose of this study was to evaluate the dosimetry of the Halcyon in treatment of bilateral breast cancer with volumetric modulated arc therapy. Methods On CT images of 10 patients with bilateral breast cancer, four Halcyon plans with different setup fields were generated, and dosimetric comparisons using Bonferroni’s multiple comparisons test were conducted among the four plans. Whole and partial arc plans on the Trilogy and the Halcyon, referred to as T-4arc, T-8arc, H-4arc and H-8arc, were designed. The prescription dose was 50 Gy in 2-Gy fractions. All plans were designed with the Eclipse version 15.5 treatment planning system. The dosimetric differences between whole and partial arc plans in the same accelerator were compared using the Mann–Whitney U test. The better Halcyon plan was selected for the further dosimetric comparison of the plan quality and delivery efficiency between the Trilogy and the Halcyon. Results Halcyon plans with high‐quality megavoltage cone beam CT setup fields increased the Dmean, D2 and V107 of the planning target volume (PTV) and the V5 and Dmean of the heart, left ventricle (LV) and lungs compared with other Halcyon setup plans. The mean dose and low dose volume of the heart, lungs and liver were significantly decreased in T-8arc plans compared to T-4arc plans. In terms of the V5, V20, V30, V40 and Dmean of the heart, the V20, V30, V40 and Dmean of the LV, the V30, V40, Dmax and Dmean of the left anterior descending artery (LAD), and the V5 and V40 of lungs, H-8arc was significantly higher than H-4arc (p < 0.05). Compared with the Trilogy’s plans, the Halcyon’s plans reduced the high-dose volume of the heart and LV but increased the mean dose of the heart. For the dose of the LAD and the V20 and V30 of lungs, there was no significant difference between the two accelerators. Compared with the Trilogy, plans on the Halcyon significantly increased the skin dose but also significantly reduced the delivery time. Conclusion For the Halcyon, the whole-arc plans have more dosimetric advantages than partial-arc plans in bilateral breast cancer radiotherapy. Although the mean dose of the heart and the skin dose are increased, the doses of the cardiac substructure and other OARs are comparable to the Trilogy, and the delivery time is significantly reduced.
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Affiliation(s)
- Tao Sun
- Department of Radiation Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong, China
| | - Xiutong Lin
- Department of Radiation Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong, China
| | - Guifang Zhang
- Department of Radiation Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong, China
| | - Qingtao Qiu
- Department of Radiation Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong, China
| | - Chengqiang Li
- Department of Radiation Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong, China
| | - Yong Yin
- Department of Radiation Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong, China.
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Dosimetric comparison of volumetric-modulated arc therapy and helical tomotherapy for adjuvant treatment of bilateral breast cancer. JOURNAL OF RADIOTHERAPY IN PRACTICE 2020. [DOI: 10.1017/s1460396920000795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractPurpose:Dosimetric comparison between volumetric-modulated arc therapy (VMAT) and helical tomotherapy (HT) in the treatment of bilateral breast cancer (BBC).Materials and methods:Ten patients treated on HT were selected retrospectively. Dose prescription was 50 Gy in 25 fractions to breast/chest wall and supraclavicular fossa (SCF) while tumour bed was simultaneously boosted to 61 Gy in 25 fractions. VMAT plans were made with four mono-isocentric partial arcs. The monitoring unit (MU) and treatment time were used to quantify the treatment efficiency. Target volumes were compared for homogeneity index (HI), conformity index (CI) while organs at risk (OARs) were compared for relevant dose volumes and integral doses (IDs).Result:For targets, no significant difference is observed between VMAT and HT in CI but VMAT could give better HI. The mean lung dose, V20 and V5 is 10·6 Gy versus 8·4 Gy (p-value 0·03), 12% versus 11·5% (p-value 0·5) and 78·1% versus 43·4% (p-value 0·005), respectively. The mean heart dose, V30 and V5 is 4·9 Gy versus 4·7 Gy (p-value 0·88), 0·5% versus 1·5% (p-value 0·18) and 26·2% versus 22·8% (p-value 0·4). Integral dose (ID) for the whole body and heart are comparable: 289 Gy kg versus 299 Gy kg (p-value 0·24) and 2·9 Gy kg versus 2·8 Gy kg (p-value 0·80). ID for lungs was significantly higher with VMAT: 7·9 Gy kg versus 6·3 Gy kg (p-value 0·03). There is a 53% reduction in treatment time and 78% in MU with VMAT against HT.Conclusion:VMAT can generate clinically acceptable plans comparable to HT for BBC. HT shows better control over low dose spillage in lungs compared to VMAT thereby increasing ID to lungs. VMAT shows better homogeneity and efficient treatment delivery than HT.
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Lin Y, Shueng P, Lin H, Tien H, Lai L. An efficient treatment planning approach to reduce the critical organ dose in volumetric modulated arc therapy for synchronous bilateral breast cancer patients. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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13
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Sun T, Lin X, Tong Y, Liu X, Pan L, Tao C, Duan J, Yin Y. Heart and Cardiac Substructure Dose Sparing in Synchronous Bilateral Breast Radiotherapy: A Dosimetric Study of Proton and Photon Radiation Therapy. Front Oncol 2020; 9:1456. [PMID: 31998635 PMCID: PMC6966409 DOI: 10.3389/fonc.2019.01456] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 12/05/2019] [Indexed: 12/25/2022] Open
Abstract
Background: Synchronous bilateral breast cancer (SBBC) is rare. The purpose of this study was to compare the dosimetric differences in intensity-modulated radiation therapy (IMRT), volumetric-modulated arc therapy (VMAT), helical tomotherapy (HT), and intensity-modulated proton therapy (IMPT) to find an optimal radiotherapy technique for bilateral breast cancer radiotherapy. Methods: For 11 patients who received synchronous bilateral whole-breast irradiation without local lymph nodal regions, six plans were designed for each patient: IMRT with a single isocenter (IMRT-ISO1), IMRT with two isocenters (IMRT-ISO2), VMAT with a single isocenter (VMAT-ISO1), VMAT with two isocenters (VMAT-ISO2), HT, and IMPT. The differences between the single- and dual-isocentric plans for IMRT and VMAT were compared, and the plan with the better quality was selected for further dosimetric comparisons with IMPT and HT. The plan aimed for a target coverage of at least 95% with the prescription dose of 50 Gy [relative biological effectiveness (RBE)] while minimizing the dose of organs at risk (OARs). Results: IMRT-ISO1 and VMAT-ISO2 plans were adopted for further dosimetric comparisons because of the reduced dose of the heart and/or lungs compared to IMRT-ISO2 and VMAT-ISO1 plans. The dose coverage of the planning target volume (PTV) was significantly higher in IMPT plans than that in all other plans. VMAT and IMPT plans showed the best conformity, whereas IMRT plans showed the worst conformity. Compared to IMRT and VMAT plans, IMPT and HT plans achieved significantly higher dose homogeneity. IMPT plans reduced the mean dose and low dose volume (V5, V10, and V20) of the heart, left anterior descending artery (LAD), and left ventricle (LV). In high-dose volumes of the heart and cardiac substructures, the IMPT, VMAT, and HT techniques showed similar advantages, and IMRT plans increased the values more than other techniques. IMPT plans had the maximal lung and normal tissue sparing but increased the skin dose compared to IMRT and VMAT plans. Conclusions: IMPT plans improve both the target coverage and the OARs sparing, especially for the heart, cardiac substructures (LAD and LV), lungs and normal tissue, in synchronous bilateral breast radiotherapy. VMAT and HT could be selected as suboptimal techniques for SBBC patients.
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Affiliation(s)
- Tao Sun
- Department of Radiation Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Xiutong Lin
- Department of Radiation Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Ying Tong
- Department of Radiation Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Xiao Liu
- Department of Radiation Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Lingjing Pan
- Department of Radiation Oncology, Hefei Ion Medical Center, Hefei, China
| | - Cheng Tao
- Department of Radiation Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Jinghao Duan
- Department of Radiation Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Yong Yin
- Department of Radiation Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
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Vyfhuis MAL, Zhu M, Agyepong B, Nichols EM. Techniques for Treating Bilateral Breast Cancer Patients Using Pencil Beam Scanning Technology. Int J Part Ther 2019; 6:1-11. [PMID: 31998816 DOI: 10.14338/ijpt-18-00047.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 08/02/2019] [Indexed: 12/25/2022] Open
Abstract
Purpose Patients with bilateral breast cancer (BBC), who require postmastectomy radiation therapy or radiation as part of breast conservation treatment, present a unique technical challenge. Even with modern techniques, such as intensity modulated radiation therapy or volumetric modulated arc therapy (VMAT), adequate target coverage is rarely achieved without the expense of increased integral dose to important organs at risk (OARs), such as the heart and lungs. Therefore, we present several BBC techniques and a treatment algorithm using intensity-modulated proton therapy (IMPT) for patients treated at our center. Materials and Methods We describe 3 different BBC treatment techniques using IMPT on patients treated at our center, with comparison VMAT plans to demonstrate the dosimetric benefit of proton therapy in these patients. Following RADCOMP (Radiation Therapy Oncology Group, Philadelphia, Pennsylvania) guidelines, a single physician approved all target volumes and OARs. Plans were designed so that ≥ 95% of the prescribed dose covered ≥ 95% of all targets. Parameters for dosimetric volume histograms for the clinical targets and OARs are reported for the 2 radiation methods. Results All methods demonstrated acceptable target coverage with 95% of the prescription planning target volume reaching a mean (± SD) of 98.0% (± 0.87%) and 97.5% (± 2.39%), for VMAT and IMPT plans, respectively. Conformity and homogeneity were also similar between the 2 techniques. Proton therapy provided observed improvements in mean heart dose (average heart mean [SD], 9.98 Gy [± 0.87 Gy] versus 2.12 Gy [± 0.96 Gy]) and total lung 5% prescription dose (V5; mean [SD] total lung V5, 97.9% [± 2.84%]), compared with 39.8% [± 9.39%]). All IMPT methods spared critical OARs; however, the single, 0° anterior-posterior plan allowed for the shortest treatment time. Conclusion Both VMAT and all 3 IMPT techniques provided excellent target coverage in patients with BBC; however, proton therapy was superior in decreasing the dose to OARs. A single-field optimization approach should be the IMPT method of choice when feasible.
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Affiliation(s)
- Melissa A L Vyfhuis
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA.,University of Maryland School of Medicine, Baltimore, MD, USA
| | - Mingyao Zhu
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA
| | - Benjamin Agyepong
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA
| | - Elizabeth M Nichols
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA.,University of Maryland School of Medicine, Baltimore, MD, USA
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Huang J, Wu X, Lin X, Shi J, Ma Y, Duan S, Huang X. Evaluation of fixed-jaw IMRT and tangential partial-VMAT radiotherapy plans for synchronous bilateral breast cancer irradiation based on a dosimetric study. J Appl Clin Med Phys 2019; 20:31-41. [PMID: 31483573 PMCID: PMC6753728 DOI: 10.1002/acm2.12688] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 07/03/2019] [Accepted: 07/10/2019] [Indexed: 11/11/2022] Open
Abstract
PURPOSE To investigate the fixed-jaw intensity-modulated radiotherapy (F-IMRT) and tangential partial volumetric modulated arc therapy (tP-VMAT) treatment plans for synchronous bilateral breast cancer (SBBC). MATERIALS AND METHOD Twelve SBBC patients with pTis-2N0M0 stages who underwent whole-breast irradiation after breast-conserving surgery were planned with F-IMRT and tP-VMAT techniques prescribing 42.56 Gy (2.66 Gy*16f) to the breast. The F-IMRT used 8-12 jaw-fixed tangential fields with single (sF-IMRT) or two (F-IMRT) isocenters located under the sternum or in the center of the left and right planning target volumes (PTVs), and tP-VMAT used 4 tangential partial arcs with two isocenters located in the center of the left and right PTVs. Plan evaluation was based on dose-volume histogram (DVH) analysis. Dosimetric parameters were calculated to evaluate plan quality; total monitor units (MUs), and the gamma analysis for patient-specific quality assurance (QA) were also evaluated. RESULTS For PTVs, the three plans had similar Dmean and conformity index (CI) values. F-IMRT showed a slightly better target coverage according to the V100% values and demonstrated an obvious reduction in V105% and Dmax compared with the values observed for sF-IMRT and tP-VMAT. Compared with tP-VMAT, sF-IMRT was slightly better in terms of V100% , V105% and Dmax . In addition, F-IMRT achieved the best homogeneity index (HI) values for PTVs. Concerning healthy tissue, tP-VMAT had an advantage in minimizing the high dose volume. The MUs of the tP-VMAT plan were decreased approximately 1.45 and 1 times compared with the sF-IMRT and F-IMRT plans, respectively, and all plans passed QA. For the lungs, heart and liver, F-IMRT achieved the smallest values in terms of Dmean and showed a significant difference compared with tP-VMAT. Simultaneously, sF-IMRT was also superior to tP-VMAT. For the coronary artery, tP-VMAT achieved the lowest Dmean , while the value for F-IMRT was 2.24% lower compared with sF-IMRT. For all organs at risk (OARs), tP-VMAT was superior at the high dose level. In contrast, sF-IMRT and F-IMRT were obviously superior at the low dose level. The sF-IMRT and F-IMRT plans showed consistent trends. CONCLUSION All treatment plans for the provided techniques were of high quality and feasible for SBBC patients. However, we recommend F-IMRT with a single isocenter as a priority technique because of the tremendous advantage of local hot spot control in PTVs and the reduced dose to OARs at low dose levels. When the irradiated dose to the lungs and heart exceed the clinical restriction, two isocenter F-IMRT can be used to maximize OAR sparing. Additionally, tP-VMAT can be adopted for improving cold spots in PTVs or high-dose exposure to normal tissue when the interval between PTVs is narrow.
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Affiliation(s)
- Jiang‐Hua Huang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
- Department of Radiation OncologySun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
| | - Xiu‐Xiu Wu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
- Department of Radiation OncologySun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
| | - Xiao Lin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
- Department of Breast Tumor CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
| | - Jun‐Tian Shi
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
- Department of Radiation OncologySun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
| | - Yu‐Jia Ma
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
- Department of Radiation OncologySun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
| | - Song Duan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
- Department of Radiation OncologySun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
| | - Xiao‐Bo Huang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
- Department of Radiation OncologySun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
- Department of Breast Tumor CenterSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouChina
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Cho Y, Cho YJ, Chang WS, Kim JW, Choi WH, Lee IJ. Evaluation of optimal treatment planning for radiotherapy of synchronous bilateral breast cancer including regional lymph node irradiation. Radiat Oncol 2019; 14:56. [PMID: 30935400 PMCID: PMC6444509 DOI: 10.1186/s13014-019-1257-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 03/20/2019] [Indexed: 12/21/2022] Open
Abstract
Background We evaluated the optimal radiotherapy (RT) plan for synchronous bilateral breast cancer (SBBC), especially treatment plans including the regional lymph node (LN) area. Methods This study was conducted using 15 patients with SBBC (5 with small breasts, 5 with large breasts, and 5 who underwent a left total mastectomy). The clinical target volume (CTV) was defined as the volume enveloping the bilateral whole breasts/chest wall and left regional LN area. We established the following plans: 1) volumetric-modulated arc therapy (VMAT)-the only plan using two pairs of partial arcs for the whole target volume, 2) VMAT using one partial arc for the left CTV followed by a 3D tangential technique for the right breast (primary hybrid plan), and 3) VMAT for the left CTV followed by a tangential technique using an automatically calculated prescription dose for the right breast, considering the background dose from the left breast VMAT plan (modified hybrid plan). The Tukey test and one-way analysis of variance were used to compare the target coverage and doses to organs at risk (OARs) of the three techniques. Results For target coverage, the VMAT-only and modified hybrid plans showed comparable target coverage in terms of Dmean (50.33 Gy vs. 50.53 Gy, p = 0.106). The primary hybrid plan showed the largest distribution of the high-dose volume, with V105% of 25.69% and V110% of 6.37% for the planning target volume (PTV) (p < 0.001). For OARs including the lungs, heart, and left anterior descending artery, the percentages of volume at various doses (V5Gy, V10Gy, V20Gy, V30Gy) and Dmean were significantly lower in both the primary and modified hybrid plans compared to those of the VMAT-only plan. These results were consistent in subgroup analyses of breast size and morphological variation. Conclusions The modified hybrid plan, using an automatically calculated prescription dose for the right breast and taking into consideration the background dose from the left breast VMAT plan, showed comparable target coverage to that of the VMAT-only plan, and was superior for saving OARs. However, considering that VMAT can be adjusted according to the physician’s intention, further evaluation is needed for developing a better plan. Electronic supplementary material The online version of this article (10.1186/s13014-019-1257-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yeona Cho
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-ro, Gangnam-gu, Seoul, 06273, Korea
| | - Yoon Jin Cho
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-ro, Gangnam-gu, Seoul, 06273, Korea
| | - Won Suk Chang
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-ro, Gangnam-gu, Seoul, 06273, Korea
| | - Jun Won Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-ro, Gangnam-gu, Seoul, 06273, Korea
| | - Won Hoon Choi
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-ro, Gangnam-gu, Seoul, 06273, Korea
| | - Ik Jae Lee
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-ro, Gangnam-gu, Seoul, 06273, Korea.
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Valli M, Cima S, Gaudino D, Cartolari R, Deantonio L, Frapolli M, Daniele D, Pesce GA, Martucci F, Azinwi NC, Bosetti D, Presilla S, Richetti A. Skin and lung toxicity in synchronous bilateral breast cancer treated with volumetric-modulated arc radiotherapy: a mono-institutional experience. Clin Transl Oncol 2019; 21:1492-1498. [DOI: 10.1007/s12094-019-02077-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 02/27/2019] [Indexed: 12/25/2022]
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18
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Gaudino D, Cima S, Frapolli M, Daniele D, Muoio B, Pesce GA, Martucci F, Azinwi NC, Bosetti D, Bellesi L, Casiraghi M, Piliero MA, Pupillo F, Presilla S, Richetti A, Valli M. Volumetric modulated arc therapy applied to synchronous bilateral breast cancer radiotherapy: dosimetric study on deep inspiration breath hold versus free breathing set up. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aac19b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Boman E, Rossi M, Kapanen M. The robustness of dual isocenter VMAT radiation therapy for bilateral lymph node positive breast cancer. Phys Med 2017; 44:11-17. [DOI: 10.1016/j.ejmp.2017.11.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 12/25/2022] Open
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Farooqi AS, Sun TL, Thang S, Shaitelman SF. Treatment of bilateral breast cancer and regional nodes using an opposed lateral beam arrangement. Pract Radiat Oncol 2017; 7:e385-e389. [PMID: 28867548 DOI: 10.1016/j.prro.2017.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 06/24/2017] [Accepted: 07/01/2017] [Indexed: 11/16/2022]
Affiliation(s)
- Ahsan S Farooqi
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Tzouh-Liang Sun
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sandy Thang
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Simona F Shaitelman
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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Fiorentino A, Mazzola R, Naccarato S, Giaj-Levra N, Fersino S, Sicignano G, Tebano U, Ricchetti F, Ruggieri R, Alongi F. Synchronous bilateral breast cancer irradiation: clinical and dosimetrical issues using volumetric modulated arc therapy and simultaneous integrated boost. Radiol Med 2017; 122:464-471. [PMID: 28224401 DOI: 10.1007/s11547-017-0741-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 02/06/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The aim of the present retrospective analysis was to evaluate dosimetric parameters, feasibility and outcome for Synchronous Bilateral Breast Cancer (SBBC) patients treated with adjuvant radiotherapy (RT) by Volumetric Modulated Arc Therapy (VMAT). METHODS From September 2011 to April 2016, 1100 Breast Cancer (BC) patients were referred to our institution to receive adjuvant breast RT, and those with SBBC were selected for the present analysis. A total of 16 patients were identified. A total dose of 50 Gy in 25 fractions was prescribed to the Planning Target Volume of the whole bilateral breast (PTVBN) with or without the supraclavicular and infraclavicular nodes, while a total dose of 60 Gy in 25 fractions was prescribed to the surgical bed (PTVboost). Several V xGy and Dx% parameters were analyzed for the PTVs, together with Conformity and Homogeneity indexes (CI, HI), and for the critical Organs at risk (OARs), lungs and heart first. RESULTS With a median follow-up of 24 months, no acute or late side effects more than grade 2 were observed. All patients are alive without any sign of disease. For target dose coverage, our observed inter-patients averages (±1 sd) were V 95% Dp = 96.7 ± 1.6% (96.3 ± 1.8%) to the left (right) PTVBN, V 95% Dp = 98.6 ± 2.7% (99.4 ± 0.9%) to the left (right) PTVboost, and D 2% = 64.4 ± 1.8 Gy (65.0 ± 2.0 Gy) to the left (right) PTVboost, respectively. With regard to the heart, the inter-patient average of D mean was 8.3 ± 3.3 Gy. For the lungs, the inter-patient average of D mean, V 5 Gy and V 20 Gy were 11.8 ± 2.3 Gy, 78.9 ± 15.3% and 15.7 ± 5%, respectively. CONCLUSIONS The present retrospective analysis showed the feasibility, tolerability and safety of VMAT in the treatment of SBBC patients. Further studies are necessary to confirm these preliminary data.
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Affiliation(s)
- Alba Fiorentino
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy
| | - Rosario Mazzola
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy.
| | - Stefania Naccarato
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy
| | - Niccolò Giaj-Levra
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy
| | - Sergio Fersino
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy
| | - Gianluisa Sicignano
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy
| | - Umberto Tebano
- Radiation Oncology School, University of Padua, Padua, Italy
| | - Francesco Ricchetti
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy
| | - Ruggero Ruggieri
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy
| | - Filippo Alongi
- Radiation Oncology, Sacro Cuore Don Calabria Cancer Care Center, via Don Sempreboni 5, 37034, Negrar, Verona, Italy
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Simultaneous integrated bilateral breast and nodal irradiation with volumetric arc therapy: case report and literature review. TUMORI JOURNAL 2016; 102:B295489C-37AA-4F8C-9614-317D2FB3B83F. [PMID: 27716877 DOI: 10.5301/tj.5000568] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2016] [Indexed: 11/20/2022]
Abstract
AIM For simultaneous bilateral breast cancer (SBBC) treatment, conventional radiotherapy (RT) has a number of critical shortcomings. Thus, the usefulness of volumetric arc therapy (VMAT) for SBBC is undeniable. CASE REPORT A 34-year-old woman with SBBC received neoadjuvant chemotherapy followed by breast-conserving surgery and bilateral lymph node dissection. Given the conservative surgery and the nodal involvement after neoadjuvant chemotherapy, bilateral adjuvant RT to the breasts and regional nodes with doses of 50 Gy in 25 fractions and a simultaneous integrated boost (SIB) of 60 Gy to the surgical bed was proposed. Monoisocentric VMAT using 2 pairs of arcs was performed with adequate target dose coverage and low doses to the organs at risk. The results of this case were compared with those of previous studies in terms of RT technique and irradiated volumes. CONCLUSIONS VMAT is feasible and safe in the treatment of SBBC with SIB and nodal irradiation.
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Kaidar-Person O, Kostich M, Zagar TM, Jones E, Gupta G, Mavroidis P, Das SK, Marks LB. Helical tomotherapy for bilateral breast cancer: Clinical experience. Breast 2016; 28:79-83. [DOI: 10.1016/j.breast.2016.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 05/11/2016] [Accepted: 05/11/2016] [Indexed: 01/01/2023] Open
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