DLP－実効線量換算係数の精度評価と問題点の検討

• 小林 正尚

  藤田保健衛生大学病院放射線部

• 大塚 智子

  大同病院放射線診断部

• 鈴木 昇一

  藤田保健衛生大学医療科学部

書誌事項

タイトル別名

• Evaluation and Examination of Accuracy for the Conversion Factors of Effective Dose per Dose–Length Product
• DLP-ジッコウセンリョウ カンサン ケイスウ ノ セイド ヒョウカ ト モンダイテン ノ ケントウ

抄録

The purpose of this paper is to reappraise the accuracy of a conversion coefficient (k) reported by International Commission on Radiological Protection Publication 102 Table A.2. The effective doses of the routine head computed tomography (CT), the routine chest CT, the perfusion CT, and the coronary CT were evaluated using the conversion coefficient (adult head: 0.021 mSv·mGy^－1·cm^－1, adult chest: 0.014 mSv·mGy^－1·cm^－1). The dose length product (DLP) used the value displayed on the console on each scanning condition. The effective doses were evaluated using a human body type phantom (Alderson Rando phantom) and thermoluminescent dosimeter (TLD) elements for comparison with the converted value. This paper reported that the effective doses evaluated from conversion coefficient became different by 0.3 mSv (17%) compared with measurements, the effective dose computed with the conversion coefficient of the adult chest may be underestimated by 45%, and the bolus-tracking which scans the narrow beams should not use a conversion coefficient.

収録刊行物

• 日本放射線技術学会雑誌

  日本放射線技術学会雑誌 69 (1), 19-27, 2013

  公益社団法人 日本放射線技術学会

キーワード

• computed tomography (CT)
• dose-length product (DLP)
• effective dose
• radiation protection

詳細情報

• CRID: 1390001206361103232
• NII論文ID: 10031139905
• NII書誌ID: AN00197784
• DOI: 10.6009/jjrt.2013_jsrt_69.1.19
• COI: 1:STN:280:DC%2BC3szjt1ylug%3D%3D
• ISSN: 18814883
• ISSN: 03694305
• NDL書誌ID: 024270094
• PubMed: 23358334
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024270094
• Web Site: https://search.jamas.or.jp/link/ui/2013204024
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可