Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy

Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy

In high-dose-rate brachytherapy, the geometry of the radioactive source is sometimes updated. Some institutions use a different source model for the dose calculation in treatment planning and treatment. The effects of this discrepancy were examined for four types of treatment plans, and ten patients...

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Main Authors: Yuki Otani, Shigetoshi Shimamoto, Iori Sumida, Yutaka Takahashi, Shoji Tani, Tetsuya Oshima, Satoshi Onosaka, Fumiaki Isohashi, Keisuke Tamari, Kazuhiko Ogawa
Format: Article
Language:English
Published: Elsevier 2018-07-01
Series:Physics and Imaging in Radiation Oncology
Online Access:http://www.sciencedirect.com/science/article/pii/S2405631618300368
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spelling doaj-cd267d76170f417d8da1cd35f3a06b542020-11-25T00:44:39ZengElsevierPhysics and Imaging in Radiation Oncology2405-63162018-07-0172326Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapyYuki Otani0Shigetoshi Shimamoto1Iori Sumida2Yutaka Takahashi3Shoji Tani4Tetsuya Oshima5Satoshi Onosaka6Fumiaki Isohashi7Keisuke Tamari8Kazuhiko Ogawa9Department of Radiology, Kaizuka City Hospital, Japan; Department of Radiation Oncology, Osaka University Graduate School of Medicine, Japan; Corresponding author at: Kaizuka City Hospital, 3-10-20 Hori, Kaizuka, Osaka 597-0015, Japan.Department of Radiation Oncology, Osaka General Medical Center, JapanDepartment of Radiation Oncology, Osaka University Graduate School of Medicine, JapanDepartment of Radiation Oncology, Osaka University Graduate School of Medicine, JapanDepartment of Radiation Oncology, Osaka General Medical Center, JapanDepartment of Radiation Oncology, Osaka General Medical Center, JapanDepartment of Radiation Oncology, Osaka General Medical Center, JapanDepartment of Radiation Oncology, Osaka University Graduate School of Medicine, JapanDepartment of Radiation Oncology, Osaka University Graduate School of Medicine, JapanDepartment of Radiation Oncology, Osaka University Graduate School of Medicine, JapanIn high-dose-rate brachytherapy, the geometry of the radioactive source is sometimes updated. Some institutions use a different source model for the dose calculation in treatment planning and treatment. The effects of this discrepancy were examined for four types of treatment plans, and ten patients were selected for each treatment plan. The impact of different source models depended on the types of treatment plan, patients, and dose index. To reduce the uncertainty and improve the reliability of the data, it would be better to use more robust metrics (D90 and D2cc) for treatment planning evaluation in facilities with this problem. Keywords: High-dose-rate brachytherapy, Source model, Dose calculationhttp://www.sciencedirect.com/science/article/pii/S2405631618300368
collection DOAJ
language English
format Article
sources DOAJ
author Yuki Otani
Shigetoshi Shimamoto
Iori Sumida
Yutaka Takahashi
Shoji Tani
Tetsuya Oshima
Satoshi Onosaka
Fumiaki Isohashi
Keisuke Tamari
Kazuhiko Ogawa
spellingShingle Yuki Otani
Shigetoshi Shimamoto
Iori Sumida
Yutaka Takahashi
Shoji Tani
Tetsuya Oshima
Satoshi Onosaka
Fumiaki Isohashi
Keisuke Tamari
Kazuhiko Ogawa
Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy
Physics and Imaging in Radiation Oncology
author_facet Yuki Otani
Shigetoshi Shimamoto
Iori Sumida
Yutaka Takahashi
Shoji Tani
Tetsuya Oshima
Satoshi Onosaka
Fumiaki Isohashi
Keisuke Tamari
Kazuhiko Ogawa
author_sort Yuki Otani
title Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy
title_short Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy
title_full Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy
title_fullStr Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy
title_full_unstemmed Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy
title_sort impact of different ir-192 source models on dose calculations in high-dose-rate brachytherapy
publisher Elsevier
series Physics and Imaging in Radiation Oncology
issn 2405-6316
publishDate 2018-07-01
description In high-dose-rate brachytherapy, the geometry of the radioactive source is sometimes updated. Some institutions use a different source model for the dose calculation in treatment planning and treatment. The effects of this discrepancy were examined for four types of treatment plans, and ten patients were selected for each treatment plan. The impact of different source models depended on the types of treatment plan, patients, and dose index. To reduce the uncertainty and improve the reliability of the data, it would be better to use more robust metrics (D90 and D2cc) for treatment planning evaluation in facilities with this problem. Keywords: High-dose-rate brachytherapy, Source model, Dose calculation
url http://www.sciencedirect.com/science/article/pii/S2405631618300368
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