2015 Fiscal Year Final Research Report
Study on age-specific dose evaluation and optimization of infant CT examinations
Project/Area Number |
25350526
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Biomedical engineering/Biomaterial science and engineering
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Research Institution | Nagoya University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
IKEDA Mitsuru 名古屋大学, 大学院医学系研究科, 教授 (50184437)
IMAI Kuniharu 名古屋大学, 大学院医学系研究科, 教授 (20335053)
FUJII Keisuke 名古屋大学, 大学院医学系研究科, 助教 (40469937)
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Co-Investigator(Renkei-kenkyūsha) |
AKAHANE Keiichi 量子科学技術研究開発機構, 放射線医学総合研究所, チームリーダー (80202521)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Keywords | 放射線計測学 / CT / 人体ファントム / 乳幼児 / 医療被ばく |
Outline of Final Research Achievements |
In this study, to estimate Japanese patient doses in infant CT examinations from dose measurements using anthropomorphic phantoms, we developed a Japanese 3-year-old phantom and constructed an in-phantom dosimetry system consisting of radiophotoluminescence glass dosemeters installed at various tissue/organ sites within the phantom. To investigate whether the phantom materials and structure with the 3-year-old phantom were appropriate for dose assessment in CT examinations, we compared organ and effective doses between the 3-year-old in-phantom dosimetry system and a web-based CT dose calculation system, WAZA-ARI. The doses for organs within scan regions and effective doses between both systems coincided with each other within allowable error of 20%. It was found from age-specific dose measurements that the effective doses for 0- to 6-year-old patients in head, chest and abdominopelvic CT examinations were equivalent regardless of age.
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Free Research Field |
放射線計測学
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