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  1. C100 医学部/医学系研究科
  2. C100a 雑誌掲載論文
  3. 学術雑誌

An in-phantom dosimetry system using pin silicon photodiode radiation sensors for measuring organ doses in x-ray CT and other diagnostic radiology

http://hdl.handle.net/2237/7087
http://hdl.handle.net/2237/7087
c3197137-ce67-4eb4-a277-784fb2e8973b
名前 / ファイル ライセンス アクション
MPH001504.pdf MPH001504.pdf (217.4 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2006-10-27
タイトル
タイトル An in-phantom dosimetry system using pin silicon photodiode radiation sensors for measuring organ doses in x-ray CT and other diagnostic radiology
言語 en
著者 Aoyama, Takahiko

× Aoyama, Takahiko

WEKO 14141

en Aoyama, Takahiko

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Koyama, Shuji

× Koyama, Shuji

WEKO 14142

en Koyama, Shuji

Search repository
Kawaura, Chiyo

× Kawaura, Chiyo

WEKO 14143

en Kawaura, Chiyo

Search repository
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
言語 en
権利情報 Copyright (2002) 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.
抄録
内容記述 A dosimetry system using commercially available pin silicon photodiodes as the sensor is evaluated for in-phantom dose measurements in x-ray CT and other diagnostic radiology. System sensitivity measured as a function of the effective energy of x rays was between 0.37 and 0.49 V/mGy at an effective energy range between 23.5 and 72 keV. The minimum detectable organ dose with 25% uncertainty was estimated to be 0.02 mGy. The excellent output linearity was found over a dose range from 0.03 to more than 10 mGy with flat dose rate response of system sensitivity up to 35 mGy s^-1, though the sensitivity indicated some energy dependence across the diagnostic energy range with a maximum of about 10%/10 keV. Since angular dependence of the sensitivity of the photodiode sensor was found to be small enough it would induce negligible dose error. Dose profile measurement along the axis of a thoracic phantom undergoing CT chest examination indicated the reliability of dose values over a range of two orders of magnitude from less than 0.2 to 12 mGy. The present dosimetry system having advantages of high sensitivity with immediate readout of dose values, low cost, and easy construction would widely be used as an alternative to TLD dosimeters for organ and skin dose measurements in CT and other diagnostic radiology.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 American Institute of Physics
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/10.1118/1.1489042
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 29, 号 7, p. 1504-1510, 発行日 2002-07
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/7087
識別子タイプ HDL
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