摘要
目的探讨心率变化对多层螺旋CT冠状动脉成像的影响。方法本研究选取在临床上疑似患有冠心病的患者共298例,定位图像确定后进行钙化分析轴位扫描,再进行增强扫描,观察不同心率变化对冠状动脉图像质量的影响。结果 298例患者共显示血管3043支,其中可评估血管占78.77%,不可评估血管占21.23%;可评价血管显示率从组N1至N7逐渐降低,运动伪影百分量从组N1至N7逐渐递增;不同心率组的图像质量比较,差异具有统计学意义(P<0.05)。结论心率变化在最佳重建图像质量获取中是一个不容忽视的因素。
Objective To learn the effluence of coronary angiography on multi-slice spiral CT with the change of heart rate. Methods There are 298 patients doubted with coronary disease in clinic. The fixed images are defined then calcification analysis and axial view scanning,and later strengthen scanning. Observe the effluence on the quality of coronary artery images with different heart rate. Results 298 patients have 3043 obvious blood vessel,including assessable blood vessel（78.77%） and unassessable blood vessel（21.23%） . The display rate of assessable blood vessel reduces from group N1 to N7 and the percent of motion artifact increase from group N1 to N7. The diverse of different heart rate has statistical significance（P0.05） . Conclusion The change of heart rate is a indispensable factor in gaining best quality reconstructed image.
出处
《当代医学》
2011年第19期64-65,共2页
Contemporary Medicine
关键词
心率
多层螺旋
CT
冠状动脉
Heart rate
Multi-slice spiral
CT
Coronary artery
