| Item type |
文献 / Documents(1) |
| 公開日 |
2021-02-19 |
| アクセス権 |
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アクセス権 |
open access |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1093/jrr/rry085 |
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言語 |
ja |
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|
関連名称 |
10.1093/jrr/rry085 |
| 出版タイプ |
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|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
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|
タイトル |
Development of a markerless tumor-tracking algorithm using prior four-dimensional cone-beam computed tomography |
|
言語 |
en |
| タイトル別表記 |
|
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その他のタイトル |
Markerless tumor-tracking algorithm using prior 4D-CBCT |
|
言語 |
en |
| 著者 |
Chhatkuli, Ritu Bhusal
デマチ, カズユキ
ウエサカ, ミツル
ナカガワ, ケイイチ
芳賀, 昭弘
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
Respiratory motion management is a huge challenge in radiation therapy. Respiratory motion induces temporal anatomic changes that distort the tumor volume and its position. In this study, a markerless tumor-tracking algorithm was investigated by performing phase recognition during stereotactic body radiation therapy (SBRT) using four-dimensional cone-beam computer tomography (4D-CBCT) obtained at patient registration, and in-treatment cone-beam projection images. The data for 20 treatment sessions (five lung cancer patients) were selected for this study. Three of the patients were treated with conventional flattening filter (FF) beams, and the other two were treated with flattening filter-free (FFF) beams. Prior to treatment, 4D-CBCT was acquired to create the template projection images for 10 phases. In-treatment images were obtained at near real time during treatment. Template-based phase recognition was performed for 4D-CBCT re-projected templates using prior 4D-CBCT based phase recognition algorithm and was compared with the results generated by the Amsterdam Shroud (AS) technique. Visual verification technique was used for the verification of the phase recognition and AS technique at certain tumor-visible angles. Offline template matching analysis using the cross-correlation indicated that phase recognition performed using the prior 4D-CBCT and visual verification matched up to 97.5% in the case of FFF, and 95% in the case of FF, whereas the AS technique matched 83.5% with visual verification for FFF and 93% for FF. Markerless tumor tracking based on phase recognition using prior 4D-CBCT has been developed successfully. This is the first study that reports on the use of prior 4D-CBCT based on normalized cross-correlation technique for phase recognition. |
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言語 |
en |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
tumor tracking |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
markerless |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
4D-CBCT |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
phase recognition |
| 書誌情報 |
en : Journal of Radiation Research
巻 60,
号 1,
p. 109-115,
発行日 2018-11-08
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
13499157 |
| 収録物ID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00705792 |
| 出版者 |
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出版者 |
Oxford University Press |
|
言語 |
en |
| 出版者 |
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|
出版者 |
The Japanese Radiation Research Society |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Japanese Society for Radiation Oncology |
|
言語 |
en |
| 権利情報 |
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|
言語 |
en |
|
権利情報 |
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
| EID |
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識別子 |
348268 |
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識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
jrr_60_1_109.pdf (633 KB)
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