| Project/Area Number |
21791175
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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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) |
2009 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | エックス線 / CT / 被ばく / 冠動脈 / 吸収線量 |
|---|
| Research Abstract |
It was confirmed that radiation doses absorbed by thoracic organs during ECG-gated coronary CTA were different according to the acquisition technique and heart rate. The estimated lifetime attributable risks of lung cancer incidence in patients who underwent ECG-gated coronary CTA were 0.006% with the ECG-gated high-pitch dual-spiral mode, 0.034% with the ECG-gated step-and-shoot mode, and 0.073% with the ECG-gated low-pitch spiral mode, respectively. Each acquisition mode should be selected appropriately, and it is necessary to carefully consider the risk for deterioration of image quality when the ECG-gated high-pitch dual-spiral mode is applied.
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