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Development of dosimetry using detectors of diagnostic digital radiography systems
http://hdl.handle.net/2237/8818
http://hdl.handle.net/2237/88182fd2da60-6494-406c-8e30-b48af8795095
名前 / ファイル | ライセンス | アクション |
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MedPhys_34-166.pdf (398.5 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-10-09 | |||||
タイトル | ||||||
タイトル | Development of dosimetry using detectors of diagnostic digital radiography systems | |||||
言語 | en | |||||
著者 |
Ariga, Eiji
× Ariga, Eiji× Ito, Shigeki× Deji, Shizuhiko× Saze, Takuya× Nishizawa, Kunihide |
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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 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | imaging plate | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | quality control | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | sensitivity index | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | dose estimation | |||||
抄録 | ||||||
内容記述 | Dosimetry using an imaging plate (IP) of computed radiography (CR) systems was developed for quality control of output of the x-ray equipment. Sensitivity index, or the S number, of the CR systems was used for estimating exposure dose under the routine condition: exposure dose from 1.0 to 1.0×10^2 μC kg^−1, tube voltages from 50 to 120 kV, and added filtration from 0 to 4.0 mm Al. The IP was calibrated by using a 6 cc ionization chamber having traceability to the National Standard Ionization Chamber. The uncertainty concerning the fading effect was suppressed less than 1.9% by reading the latent image 4 min±5 s after irradiation at the room temperature 25.9±1.0 °C. The S number decreased linearly on the logarithmic graph regardless of the beam quality as exposure dose increased. The relationship between the exposure dose (E) and the S number was fitted by the equation E=a'×S^−b. The coefficient a' decreased when the added filtration and the tube voltage were increased. The coefficient b was 0.977±0.007 in all beam qualities. The dosimetry using the IP and the equation can estimate the exposure dose in a range from 9.0×10^−2 to 5.0 μC kg^−1 within an uncertainty of ±5% required by the Japanese Industry Standard. This dose range partially included the doses under routine condition. The doses between 1.0 and 1.0×10^2 μC kg^−1 under the routine condition can be shifted to the 5% region by using an absorber. The IP dosimetry is applicable to the quality control of the CR systems. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Association of Physicists in Medicine | |||||
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/10.1118/1.2402911 | |||||
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 34, 号 1, p. 166-174, 発行日 2007-01 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/8818 | |||||
識別子タイプ | HDL |