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  1. 原著論文

Range verification system using edge detection method for a scintillator and a CCD camera system

https://repo.qst.go.jp/records/47599
https://repo.qst.go.jp/records/47599
b5ab1613-f349-43bc-86a8-79b7a86b7ec1
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-01-04
タイトル
タイトル Range verification system using edge detection method for a scintillator and a CCD camera system
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 Saotome, Naoya

× Saotome, Naoya

WEKO 477101

Saotome, Naoya

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Furukawa, Takuji

× Furukawa, Takuji

WEKO 477102

Furukawa, Takuji

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Hara, Yousuke

× Hara, Yousuke

WEKO 477103

Hara, Yousuke

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Mizushima, Kota

× Mizushima, Kota

WEKO 477104

Mizushima, Kota

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Tansho, Ryohei

× Tansho, Ryohei

WEKO 477105

Tansho, Ryohei

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Saraya, Yuichi

× Saraya, Yuichi

WEKO 477106

Saraya, Yuichi

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Shirai, Toshiyuki

× Shirai, Toshiyuki

WEKO 477107

Shirai, Toshiyuki

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Noda, Koji

× Noda, Koji

WEKO 477108

Noda, Koji

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早乙女 直也

× 早乙女 直也

WEKO 477109

en 早乙女 直也

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古川 卓司

× 古川 卓司

WEKO 477110

en 古川 卓司

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原 洋介

× 原 洋介

WEKO 477111

en 原 洋介

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水島 康太

× 水島 康太

WEKO 477112

en 水島 康太

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丹正 亮平

× 丹正 亮平

WEKO 477113

en 丹正 亮平

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皿谷 有一

× 皿谷 有一

WEKO 477114

en 皿谷 有一

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白井 敏之

× 白井 敏之

WEKO 477115

en 白井 敏之

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野田 耕司

× 野田 耕司

WEKO 477116

en 野田 耕司

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抄録
内容記述タイプ Abstract
内容記述 Purpose: Three-dimensional irradiation with a scanned carbon-ion beam has been performed from 2011 at our facility. We have been developed the rotating-gantry equipped with the scanning irradiation system. The number of combinations of beam properties to measure for the commissioning is more than 7200, i.e. 201 energy steps, 3 intensities, and 12 gantry angles. To compress the commissioning time, quick and simple range verification system is required. In this work, we develop quick range verification system using scintillator and CCD (charge-coupled device) camera and estimate the accuracy of the range verification.
Methods: A cylindrical plastic scintillator block and a CCD camera were installed on the black box. The optical spatial-resolution of the system is 0.2 mm/pixel. The camera control system was connected and communicates with the measurement system that is part of the scanning system. The range was determined by image processing. Reference range for each energy beam was determined by a difference of Gaussian (DOG) method and the 80 percent of distal dose of the depth dose distribution that were measured by a large parallel-plate ionization chamber. We compared a threshold method and a DOG method.
Results: We found that the edge detection method (i.e., the DOG method) is best for the range detection. The accuracy of range detection using this system is within 0.2 mm, and the reproducibility of same energy measurement is within 0.1 mm without setup error.
Conclusions: The results of this study demonstrate that our range check system is capable of quick and easy range verification with sufficient accuracy.
書誌情報 Medical Physics

巻 43, 号 4, p. 1754-1759, 発行日 2016-04
出版者
出版者 American Association of Physicists in Medicine
ISSN
収録物識別子タイプ ISSN
収録物識別子 0094-2405
DOI
識別子タイプ DOI
関連識別子 10.1118/1.4943955 
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