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  1. 原著論文

Volumetric tracking tool using four-dimensional CT for image guided-radiation therapy

https://repo.qst.go.jp/records/45071
https://repo.qst.go.jp/records/45071
407e7e62-eb08-4d47-9c63-3dbbd3d970a2
Item type 学術雑誌論文 / Journal Article(1)
公開日 2008-01-08
タイトル
タイトル Volumetric tracking tool using four-dimensional CT for image guided-radiation therapy
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 Tanaka, Rie

× Tanaka, Rie

WEKO 447558

Tanaka, Rie

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Mori, Shinichiro

× Mori, Shinichiro

WEKO 447559

Mori, Shinichiro

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Endo, Masahiro

× Endo, Masahiro

WEKO 447560

Endo, Masahiro

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森 慎一郎

× 森 慎一郎

WEKO 447561

en 森 慎一郎

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遠藤 真広

× 遠藤 真広

WEKO 447562

en 遠藤 真広

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抄録
内容記述タイプ Abstract
内容記述 To analyze lung vessel motion automatically, we developed computerized tracking software for multi-slice CT (MSCT) data. Here, we evaluated the tracking accuracy in images of healthy porcine lungs obtained by 256 multi-slice CT (256-MSCT). A domestic pig was scanned with 256-MSCT under free breathing conditions. The 256-MSCT provides 128-mm scan coverage with a 0.5-mm slice thickness in a single rotation (1.0 s/rot). Automatic tracking was performed by template matching, where volumes of interest (VOIs) can be identified by mouse click on all three principal orthogonal planes (axial, sagittal and coronal). The results were compared with those obtained by manual tracking. There was no significant difference between the results obtained with the computerized method and those with the manual method. The maximum tracking error was less than 1.4 mm in all directions. The computerized method allowed real-time tracking and significantly saved time in determining target displacement. The present method, 256-MSCT with a computerized tracking system, could quantify hysteresis-like behavior of lung vessels during respiration in 4DCT data. The quantitative information on the target trajectory is expected to be useful for clinical radiotherapy planning and IGRT to the lower lobe of the lung and liver area, which show large respiratory displacement.
書誌情報 Radiological Physics and Technology

巻 1, 号 1, p. 38-43, 発行日 2007-11
ISSN
収録物識別子タイプ ISSN
収録物識別子 1865-0333
DOI
識別子タイプ DOI
関連識別子 10.1007/s12194-007-0006-x
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