2017 Fiscal Year Final Research Report
Development of medical application system of energy discrimination type X-ray imaging apparatus
| Project/Area Number |
15K08694
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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 |
Medical Physics and Radiological Technology
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
高階 正彰 大阪大学, 医学系研究科, 招へい教員 (10392010)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | ２次元CdTe X線画像センサ / 線減弱係数 / 実効原子番号 / 画質特性 |
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| Outline of Final Research Achievements |
Digital characteristic curves, MTF, WS which are image quality characteristics of 2D CdTe X-ray image sensor were measured and NEQ and DQE were obtained. Also, as a subject, a two-dimensional planar image of each human body equivalent phantom in the energy region 30 to 75 keV in the energy region from 30 to 75 keV is obtained by using a human body equivalent phantom of ① dense bone, ② cortical bone, ③ internal bone, ④ lung, ⑤ soft tissue. The acquisition interval was measured under the condition of 3 keV and compared. As a result, NEQ and DQE of the two-dimensional CdTe detector were equivalent to NEQ and DQE of the known direct type FPD. In addition, the effective atomic number Z of the human body equivalent phantom (① dense bone, ② cortical bone, ③ internal bone, ④ lung, ⑤ soft tissue) coincided with the theoretical value within the error range within 9%.
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| Free Research Field |
医学物理学
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