2014 Fiscal Year Final Research Report
Radiation dose analysis and development of various dose optimization methods in dual-energy CT
| Project/Area Number |
24791279
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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
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | X線 / コンピュータ断層撮影 / 被ばく / 最適化 / エネルギー |
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| Outline of Final Research Achievements |
To optimize patient dose in dual-energy computed tomography (DECT), radiation dose and image quality, operating characteristics of automatic exposure control (AEC), and physical and clinical assessment of attenuation values in virtual non-contrast (VNC) images were evaluated. Although DECT provides images which have image quality inferior to single-energy CT (SECT), it can be performed with less radiation dose. The combination of AEC and DECT is unsuitable for obese patients because it tends to provide lower radiation dose and higher image noise levels than the combination of AEC and SECT. Attenuation in VNC images differs depending on the acquisition protocol, patient size, and contrast agent concentration.
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| Free Research Field |
放射線防護学，X線CT技術学
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