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Comparison of the Motion Accuracy of a Six Degrees of Freedom Radiotherapy Couch with and without Weights
http://hdl.handle.net/2297/35147
http://hdl.handle.net/2297/351473f869ca9-5c46-4d78-807b-028aa76362a2
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ME-PR-TAKEMURA-A-2013072615392321.pdf (418.5 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2017-10-03 | |||||
| タイトル | ||||||
| タイトル | Comparison of the Motion Accuracy of a Six Degrees of Freedom Radiotherapy Couch with and without Weights | |||||
| 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 | |||||
| 著者 |
Takemura, Akihiro
× Takemura, Akihiro× Ueda, Shinichi× Noto, Kimiya× Kojima, Hironori× Isomura, Naoki |
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| 書誌情報 |
International Journal of Medical Physics,Clinical Engineering and Radiation Oncology 巻 2, 号 3, p. 69-75, 発行日 2013-07-26 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2168-5436 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.4236/ijmpcero.2013.23010 | |||||
| 出版者 | ||||||
| 出版者 | Scientific Research Publishing | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In this study, we compared the motion accuracy of a six degrees of freedom (6D) couch for precision radiotherapy with or without weights attached to the couch. Two digital cameras were focused on the iso-center of a linear accelerator. Images of a needle which had been fixed to the 6D couch were obtained using the cameras when the couch moved in translation and rotation around each axis. The three-dimensional (3D) coordinates of the needle were calculated from coordinate values in the images. A coordinate error of the needle position relative to the theoretical position was calculated. The errors were obtained with or without a 60 kg weight attached to the 6D couch, and these errors were compared with each other. The mean distance of the 3D error vectors for the weighted test was 0.21 ± 0.11 mm, and >0.16 ± 0.09 mm for the non-weighted test (p < 0.05). However, the difference of two values was 0.06 mm which is smaller than the minimum distance the 6D couch system can correctly move. The variance of 0.16 mm for the Y coordinate errors for the weighted test only was larger than that for the non-weighted test, which was 0.06 mm (p < 0.05). We found that a total weight of 60 kg did not affect the accuracy of the 6D couch clinically. However, the variance of the Y coordinate errors was increased. This might suggest that the addition of this weight increased the uncertainty of the motion of the 6D couch. | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 関連URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.scirp.org/journal/ijmpcero | |||||
