2017 Fiscal Year Final Research Report
Study on the effective energy measurement method required for high accuracy absorbed dose evaluation of the CT apparatus
| Project/Area Number |
16K21553
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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 |
Radiation science
Medical Physics and Radiological Technology
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| Research Institution | Kawasaki University of Medical Welfare (2017)
Junshin Gakuen University (2016) |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 実効エネルギー / X線CT / 線量計測用フィルム / GAFCHROMIC EBT3 / スキャナ特性 |
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| Outline of Final Research Achievements |
In order to accurately evaluate the medical exposure of the CT apparatus, it is important to measure the quality of the X-ray flux. In this study, we aim to develop a simple and high accuracy method of evaluating the effective enrgy of CT equipment at any facility.
In the first year, it was demonstrated that GAFCHROMIC EBT 3, which has the lowest energy dependence, is excellent in evaluating effective energy characteristics. In addition, a scan method for a flatbed scanner had been established.
In the final year, the effective energy of only the X-ray flux center of the CT apparatus was measured using the simple method. Next, the distribution of the effective energy over the entire X-ray flux of the CT apparatus was measured. In this study, it was demonstrated that it is possible to evaluate two-dimensional distribution of effective energy of CT apparatus using simple method.
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| Free Research Field |
放射線科学
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