2013 Fiscal Year Final Research Report
Development of web-based CT dose calculator for patient-specific organ doses depending on age and physical size
| Project/Area Number |
23591825
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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 |
Radiation science
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| Research Institution | Oita University of Nursing and Health Sciences |
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Principal Investigator |
KAI Michiaki 大分県立看護科学大学, 看護学部, 教授 (10185697)
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| Co-Investigator(Kenkyū-buntansha) |
ENDO Akira 日本原子力研究開発機構, 研究員 (10354705)
TAKAHASHI Fumiaki 日本原子力研究開発機構, 研究員 (20354706)
SATO Kaoru 日本原子力研究開発機構, 研究員 (80354702)
BAN Nobuhiko 東京医療保健大学, 看護学部, 教授 (70251220)
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| Project Period (FY) |
2011 – 2013
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| Keywords | CT診断 / 臓器線量 / ボクセルファントム / モンテカルロ |
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| Research Abstract |
The WAZA-ARI calculator was developed to estimate organ doses from CT scans by utilizing the voxel phantoms as the standard Japanese physical size. This study aimed to determine correction coefficients to estimate organ doses to patients of any size attended to in daily clinical practice including children. Florida University phantoms were used for the dose to children. Different size phantoms were developed by modifying the volume of soft tissues where the deviation of physical sizes in BMI was 2 times lower for thin patients and 2 or 5 times higher for fat patients than the standard. Furthermore, we constructed voxel phantoms based on the CT images of patients of different size and simulated radiation transport in CT examinations to obtain organ doses using Monte Carlo simulation. The results show the linear relationship between effective diameter and organ dose can predict patient-specific organ doses. We completed the WAZA-ARI 2 that can take any sizes and age into account.
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[Presentation] WAZA-ARI II : Web-based CT dose calculator for Asian physiques, IRPA Regional Congress2014
Author(s)
K.Ono, K.Sato, F.Takahashi, T. Yoshitake, O.Kamei, T.Hasegawa, Y .Katsunua, N.Ban, A.Endo, C.Lee, WE.Bolch, M.Kai
Organizer
The 4^<th> Asian and Oceanic Congress on Radiation Protection
Place of Presentation
Kuala Lumpur
Year and Date
20140512-16
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