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  1. C100 医学部/医学系研究科
  2. C100b 紀要
  3. Nagoya journal of medical science
  4. 84(1)

Evaluation of system-related magnetic resonance imaging geometric distortion in radiation therapy treatment planning: two approaches and effectiveness of three-dimensional distortion correction

https://doi.org/10.18999/nagjms.84.1.29
https://doi.org/10.18999/nagjms.84.1.29
da1b49ba-d56f-446c-814c-bd94d83becdb
名前 / ファイル ライセンス アクション
04_Y-Kato.pdf 04_Y-Kato.pdf (25.7 MB)
Item type itemtype_ver1(1)
公開日 2022-02-28
タイトル
タイトル Evaluation of system-related magnetic resonance imaging geometric distortion in radiation therapy treatment planning: two approaches and effectiveness of three-dimensional distortion correction
言語 en
著者 Kato, Yutaka

× Kato, Yutaka

en Kato, Yutaka

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Okudaira, Kuniyasu

× Okudaira, Kuniyasu

en Okudaira, Kuniyasu

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Kamomae, Takeshi

× Kamomae, Takeshi

en Kamomae, Takeshi

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Kumagai, Motoki

× Kumagai, Motoki

en Kumagai, Motoki

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Nagai, Youta

× Nagai, Youta

en Nagai, Youta

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Taoka, Toshiaki

× Taoka, Toshiaki

en Taoka, Toshiaki

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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
キーワード
言語 en
主題Scheme Other
主題 distortion
キーワード
言語 en
主題Scheme Other
主題 magnetic resonance imaging
キーワード
言語 en
主題Scheme Other
主題 radiation therapy treatment planning
キーワード
言語 en
主題Scheme Other
主題 system-related distortion
キーワード
言語 en
主題Scheme Other
主題 distortion correction
内容記述
内容記述 We propose two methods to evaluate system-related distortion in magnetic resonance imaging (MRI) in radiation therapy treatment planning (RTP) and demonstrate the importance of three-dimensional (3D) distortion correction (DC) by quantitatively measuring the distortion magnitude. First, a small pin phantom was scanned at multiple positions using an external laser guide for accurate phantom placement and combined into one image encompassing a large area. Direct plane images were used for evaluating in-plane distortion and multiplanar reconstruction images for through-plane distortion with no DC, two-dimensional (2D) DC, and 3D DC. Second, a large grid sheet was scanned as the direct plane of the phantom placement. The distortion magnitude was determined by measuring the displacement between the MRI and reference coordinates. The measured distortions were compared between in- and through-plane when applying DC and between the two methods. The small pin phantom method can be used to evaluate a wide range of distortions, whereas data from the entire plane can be obtained with a single scan using the grid sheet without a laser guide. The mean distortion magnitudes differed between the methods. Furthermore, the 3D DC reduced in- and through-plane distortions. In conclusion, the small pin phantom method can be used to evaluate a wide range of distortions by creating a combined image, whereas the grid sheet method is simpler, accurate, repeatable, and does not require a special-order phantom or laser guide. As 3D DC reduces both in- and through-plane distortions, it can be used to improve RTP quality.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 This is an Open Access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view the details of this license, please visit (http://creativecommons.org/licenses/by-nc-nd/4.0/).
言語 en
内容記述タイプ Other
出版者
言語 en
出版者 Nagoya University Graduate School of Medicine, School of Medicine
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 departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/nagjms.84.1.29
ID登録タイプ JaLC
関連情報
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 https://www.med.nagoya-u.ac.jp/medlib/nagoya_j_med_sci/841.html
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 0027-7622
収録物識別子
収録物識別子タイプ EISSN
収録物識別子 2186-3326
書誌情報 en : Nagoya Journal of Medical Science

巻 84, 号 1, p. 29-41, 発行日 2022-02
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