| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2017-10-03 |
| タイトル |
|
|
タイトル |
Effects of image lag on real-time target tracking in radiotherapy |
| 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 |
| ID登録 |
|
|
ID登録 |
10.24517/00013776 |
|
ID登録タイプ |
JaLC |
| 著者 |
Tanaka, Rie
Ichikawa, Katsuhiro
Mori, Shinichiro
Dobashi, Suguru
Kumagaya, Motoki
Kawashima, Hiroki
Morita, Shinichi
Sanada, Shigeru
|
| 著者別表示 |
田中, 利恵
市川, 勝弘
川嶋, 広貴
真田, 茂
|
| 書誌情報 |
Progress in Biomedical Optics and Imaging - Proceedings of SPIE
巻 7622,
号 PART 3,
p. 76224S,
発行日 2010-01-01
|
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1605-7422 |
| DOI |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1117/12.844202 |
| 出版者 |
|
|
出版者 |
Society of Photo-optical Instrumentation Engineers (SPIE) |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
There is a concern that image lag may reduce accuracy of real-time target tracking in radiotherapy. This study was performed to investigate influence of image lag on the accuracy of target tracking in radiotherapy. Fluoroscopic image: were obtained using a direct type of dynamic flat-panel detector (FPD) system under conditions of target tracking during radiotherapy. The images continued to be read out after X-irradiations and cutoff, and image lag properties in the system were then determined. Subsequently, a tungsten materials plate with a precision edge was mounted on to a motor control device, which provided a constant velocity. The plate was moved into the center of the detector at movement rate of 1 and 20 mm/s, covering lung tumor movement of normal breathing, and MTF and profile curves were measured on the edges covering and uncovering the detector. A lung tumor with blurred edge due to image lag was simulated using the results and then superimposed on breathing chest radiographs of a patient. The moving target with and without image lag was traced using a template-matching technique. In the results, the target could be traced within a margin for error ii external radiotherapy. The results indicated that there was no effect of image lag on target tracking in usual breathing speed in a radiotherapy situation. Further studies are required to investigate influence by the other factors, such a: exposure dose, target size and shape, imaging rate, and thickness of a patient's body. © 2010 SPIE. |
| 権利URI |
|
|
権利情報 |
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=747539 |
| 著者版フラグ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
ME-PR-TANAKA-R-76224S.PDF (442.8 kB)
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