2018 Fiscal Year Final Research Report
Comprehensive study of radiation dose reduction of CT
| Project/Area Number |
16K10285
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Radiation science
|
|---|
| Research Institution | Kumamoto University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
北島 美香 熊本大学, 医学部附属病院, 准教授 (60305018)
宇都宮 大輔 横浜市立大学, 医学研究科, 教授 (30571046)
中浦 猛 熊本大学, 大学院生命科学研究部(医), 特任講師 (90437913)
尾田 済太郎 熊本大学, 大学院生命科学研究部(医), 特任助教 (80571041)
船間 芳憲 熊本大学, 大学院生命科学研究部(保), 教授 (30380992)
|
|---|
| Project Period (FY) |
2016-04-01 – 2019-03-31
|
| Keywords | CT被曝 / 低電圧撮像法 / 逐次近似法 / dual energy CT |
|---|
| Outline of Final Research Achievements |
The value of CT studies were evaluated in various organs and diseases by means of literature search. This results were reported in Japanese Imaging Guidelines. The value of model based iterative reconstruction was clinically evaluated in comparison with filtered back projection technique. We found substantial radiation dose reduction can be achieved while image quality was maintained. We also found low voltage CT technique is useful not only in reducing radiation dose but also increasing CT attenuation of contrast material. This technique was useful in pediatric patients and patients with renal dysfunction.
|
| Free Research Field |
放射線診断学
|
| Academic Significance and Societal Importance of the Research Achievements |
低被曝法、低電圧撮像及びdual energy CTによるmonochromatic image、逐次近似法などを適切に使うことで、診断能を維持したまま、低被曝及び造影剤減量が可能となることを明らかとした。今後の日常診療においてこれらの技術を使うことで、診断的に許容できる範囲で大幅な低被曝を達成できることを明らかにした。国民のCT による被曝量の低下に寄与できると考える。
|
