Evaluation of scan protocols appropriate for patient-size in adult and pediatric CT examinations
| Project/Area Number |
15K19202
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Medical Physics and Radiological Technology
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| Research Institution | Nagoya University |
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Principal Investigator |
Fujii Keisuke 名古屋大学, 医学系研究科(保健), 助教 (40469937)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 医療被ばく / CT / 線量評価 / 画質評価 / 放射線防護 / 臓器線量 / 低コントラスト |
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| Outline of Final Research Achievements |
The aim of this study is to investigate scan protocols appropriate for CT examinations based on the evaluation of radiation doses and image quality. We built Monte Carlo (MC) simulation models for adult and pediatric abdomen-pelvis CT scans with tube current modulation (TCM) and evaluated organ doses in the CT examinations using the simulation models. The doses were compared with those measured using adult and pediatric anthropomorphic phantoms and radio-photoluminescence glass dosimeters. We also developed an image quality phantom representing an adult abdominal shape. The image quality phantom was scanned with fixed tube current and TCM protocols which deliver almost the same CT dose index, and the radiation doses and image quality were evaluated. The results showed that dose distribution in CT scans with TCM was more uniform, and image noise on CT images obtained with TCM decreased in some regions.
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Report
(4 results)
Research Products
(34 results)
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[Presentation] 逐次近似画像におけるノイズ付加効果2015
Author(s)
五十嵐 健悟, 山元 勇輝, 内藤 啓介, 川浦 稚代, 藤井 啓輔, 池田 充, 今井 國治
Organizer
第43回日本放射線技術学会秋季学術大会
Place of Presentation
金沢
Year and Date
2015-10-08
Related Report
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[Presentation] 確率共鳴画像における信号形状の定量評価2015
Author(s)
山元 勇輝, 五十嵐 健悟, 内藤 啓介, 藤井 啓輔, 川浦 稚代, 森 政樹, 池田 充, 今井 國治
Organizer
2015年電子情報通信学会ソサエティ大会
Place of Presentation
仙台
Year and Date
2015-09-08
Related Report
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[Presentation] 類似度を用いた確率共鳴現象の定量評価2015
Author(s)
五十嵐 健悟, 山元 勇輝, 内藤 啓介, 藤井 啓輔, 川浦 稚代, 森 政樹, 池田 充, 今井 國治
Organizer
電子情報通信学会イメージメディアクォリティ研究会
Place of Presentation
鹿児島
Year and Date
2015-09-04
Related Report
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