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Radiation dose evaluation in 64-slice CT examinations with adult and paediatric anthropomorphic phantoms
https://repo.qst.go.jp/records/45698
https://repo.qst.go.jp/records/4569825ceff94-f2d9-4177-aeff-c8fdad53c8fc
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-12-24 | |||||
| タイトル | ||||||
| タイトル | Radiation dose evaluation in 64-slice CT examinations with adult and paediatric anthropomorphic phantoms | |||||
| 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 |
Fujii, Keisuke
× Fujii, Keisuke× Aoyama, Takahiko× Kawaura, Chiyo× Koyama, Shuji× Yamauchi, Masato× Ko, Susumu× Akahane, Keiichi× Nishizawa, Kanae× 藤井 啓輔× 赤羽 恵一× 西澤 かな枝 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The objective of this study was to evaluate organ dose and the effective dose to patients undergoing routine adult and paediatric CT examinations with 64-slice CT scanners and to compare the doses with those from 4, 8 and 16 multi-slice CT scanners. Patient doses were measured with small sized - less than 7mm wide - silicon-photodiode dosimeters, 34 in number, which were implanted at various tissue and organ positions within adult and 6-year-child anthropomorphic phantoms. Output signals from photodiode dosimeters were read out on a personal computer, from which organ and effective doses were computed. For the adult phantom, organ doses for organs within scan range and effective doses were 8-35 mGy and 7-18 mSv in chest CT, and 12-33 mGy and 10-21 mSv in abdominopelvic CT. For the paediatric phantom, these were 4-17 mGy and 3-7 mSv in chest CT, and 5-14 mGy and 3-9 mSv in abdominopelvic CT. Doses for organs at the boundaries of scan length were higher for 64-slice CT scanners using large beam widths and/or large pitch because of larger extent of overranging. CTDIvol, DLP and the effective dose in 64-slice CT for the adult and paediatric phantoms were the same levels as those obtained in 4, 8 and 16-slice CT. Conversion factors of DLP to the effective dose by ICRP Pub.103 were 0.024 and 0.019 mSv mGy-1 cm-1 for respectively adult chest and adult abdominopelvic CT scans. | |||||
| 書誌情報 |
British Journal of Radiology 巻 82, 号 984, p. 1010-1018, 発行日 2009-12 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0007-1285 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://bjr.birjournals.org/cgi/reprint/82/984/1010 | |||||
| 関連名称 | http://bjr.birjournals.org/cgi/reprint/82/984/1010 | |||||
