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Title: SU-F-T-314: Estimation of Dose Distributions with Different Types of Breast Implants in Various Radiation Treatment Techniques for Breast Cancer

Abstract

Purpose: This study investigates the effects of different kinds and designs of commercialized breast implants on the dose distributions in breast cancer radiotherapy under a variety of conditions. Methods: The dose for the clinical conventional tangential irradiation, Intensity Modulated Radiation Therapy (IMRT), volumetric modulated arc therapy (VMAT) breast plans was measured using radiochromic films and stimulated luminescence dosimeter (OSLD). The radiochromic film was used as an integrating dosimeter, while the OSLDs were used for real-time dosimetry to isolate the contribution of dose from individual segment. The films were placed at various slices in the Rando phantom and between the body and breast surface OSLDs were used to measure skin dose at 18 positions spaced on the two (right/left) breast. The implant breast was placed on the left side and the phantom breast was remained on the right side. Each treatment technique was performed on different size of the breasts and different shape of the breast implant. The PTV dose was prescribed 50.4 Gy and V47.88≥95%. Results: In different shapes of the breast implant, because of the shadow formed extensive around the breast implant, dose variation was relatively higher that of prescribed dose. As the PTV was delineated on the wholemore » breast, maximum 5% dose error and average 3% difference was observed averagely. VMAT techniques largely decrease the contiguous hot spot in the skin by an average of 25% compared with IMRT. The both IMRT and VMAT techniques resulted in lower doses to normal critical structures than tangential plans for nearly all dose analyzation. Conclusion: Compared to the other technique, IMRT reduced radiation dose exposure to normal tissues and maintained reasonable target homogeneity and for the same target coverage, VMAT can reduce the skin dose in all the regions of the body.« less

Authors:
; ;  [1];  [2];  [1];  [2];  [2]; ; ;  [3]
  1. Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul (Korea, Republic of)
  2. (Korea, Republic of)
  3. Department of Radiation Oncology, Gangnam Severance Hospital, Seoul (Korea, Republic of)
Publication Date:
OSTI Identifier:
22648920
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Physics; Journal Volume: 43; Journal Issue: 6; Other Information: (c) 2016 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; 61 RADIATION PROTECTION AND DOSIMETRY; ANIMAL TISSUES; HOT SPOTS; IMPLANTS; MAMMARY GLANDS; NEOPLASMS; RADIATION DOSE DISTRIBUTIONS; RADIOTHERAPY; SKIN

Citation Formats

Lee, M, Lee, S, Suh, T, Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Jung, J, Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Department of Radiation Oncology, College of Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Kim, S, Cho, Y, and Lee, I. SU-F-T-314: Estimation of Dose Distributions with Different Types of Breast Implants in Various Radiation Treatment Techniques for Breast Cancer. United States: N. p., 2016. Web. doi:10.1118/1.4956499.
Lee, M, Lee, S, Suh, T, Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Jung, J, Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Department of Radiation Oncology, College of Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Kim, S, Cho, Y, & Lee, I. SU-F-T-314: Estimation of Dose Distributions with Different Types of Breast Implants in Various Radiation Treatment Techniques for Breast Cancer. United States. doi:10.1118/1.4956499.
Lee, M, Lee, S, Suh, T, Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Jung, J, Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Department of Radiation Oncology, College of Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Kim, S, Cho, Y, and Lee, I. Wed . "SU-F-T-314: Estimation of Dose Distributions with Different Types of Breast Implants in Various Radiation Treatment Techniques for Breast Cancer". United States. doi:10.1118/1.4956499.
@article{osti_22648920,
title = {SU-F-T-314: Estimation of Dose Distributions with Different Types of Breast Implants in Various Radiation Treatment Techniques for Breast Cancer},
author = {Lee, M and Lee, S and Suh, T and Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul and Jung, J and Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul and Department of Radiation Oncology, College of Medicine, Soonchunhyang University Bucheon Hospital, Bucheon and Kim, S and Cho, Y and Lee, I},
abstractNote = {Purpose: This study investigates the effects of different kinds and designs of commercialized breast implants on the dose distributions in breast cancer radiotherapy under a variety of conditions. Methods: The dose for the clinical conventional tangential irradiation, Intensity Modulated Radiation Therapy (IMRT), volumetric modulated arc therapy (VMAT) breast plans was measured using radiochromic films and stimulated luminescence dosimeter (OSLD). The radiochromic film was used as an integrating dosimeter, while the OSLDs were used for real-time dosimetry to isolate the contribution of dose from individual segment. The films were placed at various slices in the Rando phantom and between the body and breast surface OSLDs were used to measure skin dose at 18 positions spaced on the two (right/left) breast. The implant breast was placed on the left side and the phantom breast was remained on the right side. Each treatment technique was performed on different size of the breasts and different shape of the breast implant. The PTV dose was prescribed 50.4 Gy and V47.88≥95%. Results: In different shapes of the breast implant, because of the shadow formed extensive around the breast implant, dose variation was relatively higher that of prescribed dose. As the PTV was delineated on the whole breast, maximum 5% dose error and average 3% difference was observed averagely. VMAT techniques largely decrease the contiguous hot spot in the skin by an average of 25% compared with IMRT. The both IMRT and VMAT techniques resulted in lower doses to normal critical structures than tangential plans for nearly all dose analyzation. Conclusion: Compared to the other technique, IMRT reduced radiation dose exposure to normal tissues and maintained reasonable target homogeneity and for the same target coverage, VMAT can reduce the skin dose in all the regions of the body.},
doi = {10.1118/1.4956499},
journal = {Medical Physics},
number = 6,
volume = 43,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}