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 |
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| Section | 一般 |
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| Research Field |
Biomedical engineering/Biomaterial science and engineering
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| Research Institution | Nagoya University |
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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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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2014: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
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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 / 乳幼児被ばく |
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| 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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Report
(4 results)
Research Products
(38 results)
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[Presentation] 造影能に関する理論式の導出とそれに基づく造影能評価2014
Author(s)
内藤啓介, 山元勇輝, 藤井啓輔, 川浦稚代, 西本卓矢, 森 政樹, 池田 充, 今井國治
Organizer
第42回日本放射線技術学会秋季学術大会
Place of Presentation
札幌コンベンションセンター (北海道)
Year and Date
2014-10-09 – 2014-10-11
Related Report
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