CAJ | 학술논문

目的：控制256层iCT冠状动脉成像的辐射剂量。方法应用降低管电流、ECG毫安调制技术、前瞻门控技术进行冠状动脉CTA成像，分别比较各种组间扫描辐射剂量。结果根据患者BMI调整、降低管电流可以明显减低辐射剂量；ECG毫安调制技术及前瞻门控技术均可以有效减低辐射剂量。结论制定个体化扫描方案，运用各种减低辐射剂量措施优化扫描参数，能显著降低多层螺旋CT冠状动脉成像的辐射剂量。
목적：공제256층iCT관상동맥성상적복사제량。방법응용강저관전류、ECG호안조제기술、전첨문공기술진행관상동맥CTA성상，분별비교각충조간소묘복사제량。결과근거환자BMI조정、강저관전류가이명현감저복사제량；ECG호안조제기술급전첨문공기술균가이유효감저복사제량。결론제정개체화소묘방안，운용각충감저복사제량조시우화소묘삼수，능현저강저다층라선CT관상동맥성상적복사제량。
Objective To control the radiation dose(RD) of 256 slice iCT coronary artery imaging. Methods Compare the RD of three groups using tube current reducing, ECGmA modulation method, and prospective electrocardiograph (ECG)-triggered axial scan. Results Reducing the tube current according to BMI, ECGmA modulation method and prospective electrocardiograph (ECG)-triggered axial scan can effectively reduce RD. Conclusion Individualized scanning scheme, using a variety of reducing RD methods and scanning parameters can significantly reduce the radiation dose of coronary angiography with multi-slice spiral CT.