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  1. C100 医学部/医学系研究科
  2. C100a 雑誌掲載論文
  3. 学術雑誌

Development of an x-ray-opaque-marker system for quantitative phantom positioning in patient-specific quality assurance

http://hdl.handle.net/2237/0002002216
http://hdl.handle.net/2237/0002002216
d45d0048-b485-48fd-bc45-34c87d4224ea
名前 / ファイル ライセンス アクション
Paper_Manuscript_PhysMed.pdf Paper_Manuscript_PhysMed.pdf (298 KB)
Figure1.pdf Figure1.pdf (3.3 MB)
Figure2.pdf Figure2.pdf (45 KB)
Figure3.pdf Figure3.pdf (41 KB)
Figure4.pdf Figure4.pdf (255 KB)
Figure5.pdf Figure5.pdf (51 KB)
Figure6.pdf Figure6.pdf (330 KB)
Figure7.pdf Figure7.pdf (371 KB)
Item type itemtype_ver1(1)
公開日 2022-03-14
タイトル
タイトル Development of an x-ray-opaque-marker system for quantitative phantom positioning in patient-specific quality assurance
言語 en
著者 Suzuki, Kentaro

× Suzuki, Kentaro

en Suzuki, Kentaro

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Kamomae, Takeshi

× Kamomae, Takeshi

en Kamomae, Takeshi

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Oguchi, Hiroshi

× Oguchi, Hiroshi

en Oguchi, Hiroshi

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Kawabata, Fumitaka

× Kawabata, Fumitaka

en Kawabata, Fumitaka

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Sugita, Kazuma

× Sugita, Kazuma

en Sugita, Kazuma

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Okudaira, Kuniyasu

× Okudaira, Kuniyasu

en Okudaira, Kuniyasu

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Mori, Masaki

× Mori, Masaki

en Mori, Masaki

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Abe, Shinji

× Abe, Shinji

en Abe, Shinji

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Komori, Masataka

× Komori, Masataka

en Komori, Masataka

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Kawamura, Mariko

× Kawamura, Mariko

en Kawamura, Mariko

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Ohtakara, Kazuhiro

× Ohtakara, Kazuhiro

en Ohtakara, Kazuhiro

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Itoh, Yoshiyuki

× Itoh, Yoshiyuki

en Itoh, Yoshiyuki

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Naganawa, Shinji

× Naganawa, Shinji

en Naganawa, Shinji

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
キーワード
主題Scheme Other
主題 Patient-specific QA
キーワード
主題Scheme Other
主題 Fiducial marker
キーワード
主題Scheme Other
主題 CyberKnife
キーワード
主題Scheme Other
主題 Monte Carlo simulation
内容記述
内容記述 Purpose: We developed an x-ray-opaque-marker (XOM) system with inserted fiducial markers for patient-specific quality assurance (QA) in CyberKnife (Accuray) and a general-purpose linear accelerator (linac). The XOM system can be easily inserted or removed from the existing patient-specific QA phantom. Our study aimed to assess the utility of the XOM system by evaluating the recognition accuracy of the phantom position error and estimating the dose perturbation around a marker. Methods: The recognition accuracy of the phantom position error was evaluated by comparing the known error values of the phantom position with the values measured by matching the images with target locating system (TLS; Accuray) and on-board imager (OBI; Varian). The dose perturbation was evaluated for 6 and 10 MV single-photon beams through experimental measurements and Monte Carlo simulations. Results: The root mean squares (RMSs) of the residual position errors for the recognition accuracy evaluation in translations were 0.07 mm with TLS and 0.30 mm with OBI, and those in rotations were 0.13° with TLS and 0.15° with OBI. The dose perturbation was observed within 1.5 mm for 6 MV and 2.0 mm for 10 MV from the marker. Conclusions: Sufficient recognition accuracy of the phantom position error was achieved using our system. It is unnecessary to consider the dose perturbation in actual patient-specific QA. We concluded that the XOM system can be utilized to ensure quantitative and accurate phantom positioning in patient-specific QA with CyberKnife and a general-purpose linac.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
関連情報
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.ejmp.2021.10.017
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 1120-1797
書誌情報 en : Physica Medica

巻 91, p. 121-130, 発行日 2021-11
ファイル公開日
日付 2022-11-01
日付タイプ Available
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