Software Development for Estimating the Conversion Factor (k-factor) at suitable scan areas, Relating the Dose Length Product to the Effective Dose

• Project/Area Number: 16K21455
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Radiation science; Medical Physics and Radiological Technology
• Research Institution: Fujita Health University
• Principal Investigator: Kobayashi Masanao 藤田医科大学, 保健学研究科, 講師 (80720979)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2016: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: CT / 実効線量 / k-factor / 被ばく / 放射線

Outline of Final Research Achievements

We developed a k-factor-creator software (kFC) that provides the k-factor for CT examination in an arbitrary scan area. It provides the k-factor from the effective dose and dose-length product by boundary representation phantoms.

Academic Significance and Societal Importance of the Research Achievements

本研究結果はCTの被ばく線量を簡便に評価可能である．そのため，この研究がもたらす効果は，第一に放射線医学研究報告における線量の信頼性が向上すること，第二に研究報告を集約している国連調査報告書，アンケートやDose-SRを集約している診断参考レベルなど被検者の安全を守る線量指標の信頼性が向上すること，第三に信頼性のある線量値がインフォームド・コンセントにおいて被検者に安心を与えることである．

Research Products

• [Journal Article] Software Development for Estimating the Conversion Factor (k-factor) at suitable scan areas, Relating the Dose Length Product to the Effective Dose (2016)
  • Author(s): Masanao Kobayashi, Yasuki Asada, Kosuke Matsubara, Syouich Suzuki, Kichiro Koshida, Yuta Matsunaga, Tomonobu Haba, Ai Kawaguchi, Hiroshi Toyama, Ryouichi Kato
  • Journal Title: Radiation Protection Dosimetry Volume: 8 Pages: 1-10
  • DOI: 10.1093/rpd/ncw256
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 患者体型と撮影領域を考慮した DLP- 実効線量換 算係数 (k-factor) の考案 (2016)
  • Author(s): 小林正尚、浅田恭生、鈴木昇一，松永雄太、川口愛、羽場友信，片岡由美，木野村豊
  • Organizer: 第32回日本診療放射線技師学術大会
  • Place of Presentation: 岐阜都ホテル・長良川国際ホテル
  • Year and Date: 2016-09-16