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Radiation dose evaluation in tomosynthesis and C-arm cone-beam CT examinations with an anthropomorphic phantom
http://hdl.handle.net/2237/14184
http://hdl.handle.net/2237/14184f1b3707d-447b-4ab0-a60e-8ce1d8e482f4
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Medical_Physics_37_8_4298.pdf (624.5 kB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2010-09-22 | |||||
| タイトル | ||||||
| タイトル | Radiation dose evaluation in tomosynthesis and C-arm cone-beam CT examinations with an anthropomorphic phantom | |||||
| 言語 | en | |||||
| 著者 |
Koyama, Shuji
× Koyama, Shuji× Aoyama, Takahiko× Oda, Nobuhiro× Yamauchi-Kawaura, Chiyo |
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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 | |||||
| 権利 | ||||||
| 権利情報 | Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. | |||||
| 言語 | en | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | organ dose | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | C-arm cone-beam CT | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | tomosynthesis | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | effective dose | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | dosimetry | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Purpose: The objective of this study was to evaluate organ dose and the effective dose to patients undergoing tomosynthesis (TS) and C-arm cone-beam computed tomography (CBCT) examinations and to compare the doses to those in multidetector CT (MDCT) scans. Methods: Patient doses were measured with small sized silicon-photodiode dosimeters, 48 in number, which were implanted at various tissue and organ positions within an anthropomorphic phantom. Output signals from photodiode dosimeters were read out on a personal computer, from which organ and effective doses were computed. The doses in head, chest, abdomen, and hip-joint TS, and in head and abdomen C-arm CBCT were evaluated for routine protocols on Shimadzu TS and C-arm CBCT systems, and the doses in MDCT with the same scan regions as in TS and CBCT were on Toshiba 64-detector-row CT scanners. Results: In TS examination of the head, chest, abdomen, and hip-joint, organ doses for organs within scan ranges were 1–4 mGy, and effective doses were 0.07 mSv for the head scan and around 1 mSv for other scans. In C-arm CBCT examinations of the head and abdomen, organ doses within scan range were 2–37 mGy, and effective doses were 1.2 mSv for the head scan and 4–5 mSv for abdominal scans. Effective doses in TS examinations were approximately a factor of 10 lower, while the doses in CBCT examinations were nearly the same level, compared to the doses in the corresponding MDCT examinations. Conclusions: TS examinations with low doses and excellent resolutions in coronal images compared to recent MDCT would widely be used in tomographic examinations of the chest, abdomen, pelvis, skeletal-joints, and knee instead of MDCT examinations with significantly high doses. Since patient dose in C-arm CBCT was nearly the same level as that in recent MDCT, the same consideration for high radiation dose would be required for the use of CBCT. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | American Institute of Physics | |||||
| 言語 | en | |||||
| 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 | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1118/1.3465045 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0094-2405 | |||||
| 書誌情報 |
en : Medical Physics 巻 37, 号 8, p. 4298-4306, 発行日 2009-08 |
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| フォーマット | ||||||
| 値 | application/pdf | |||||
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| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/14184 | |||||
| 識別子タイプ | HDL | |||||
| URI | ||||||
| 識別子 | http://dx.doi.org/10.1118/1.3465045 | |||||
| 識別子タイプ | DOI | |||||
