64排螺旋CT评估冠状动脉及左心室功能

目的：评估行64排螺旋CT冠状动脉成像（CCTA）的同时进行左心室功能分析定量评估的可行性和准确性。方法：对连续临床疑诊或确诊为冠心病的50例患者行64排螺旋CT回顾性心电门控CCTA检查。采用美国心脏协会冠状动脉分段法进行分段，采用4级评分法对每段冠状动脉成像质量进行评估。并以超声心动图检查结果为对照，对CT测得的左心室射血分数（LVEF）值进行统计学分析。结果：50例患者中，42例顺利完成了检查，其中35例同时进行了超声心动图左心室功能检查。共评价冠状动脉508段，其中可以用于诊断的占91．93％。64排CT与超声心动图所测得的LVEF值差异无统计学意义（t=-1．47，P=0．15），两者有较高的相关性（r=0．64）。结论：64排螺旋CT可同时行冠状动脉成像及左心室功能分析，冠状动脉成像总体质量较好，左心室功能分析结果可靠。

Evaluation of coronary artery and left ventricular function with 64-slice computed tomography

Objective： To evaluate the feasibility and accuracy of coronary angiography and left ventricularfunction analysis evaluated by 64-slice computed tomography simultaneously. Methods： Fifty consecutive patients suspected or diagnosed with coronary disease were examined by retrospective electrocardiogating（ECG） cardiac CT scan for coronary artery angiography and left ventricular functional analysis. Coronary artery was divided into 16 segments according to the American Heart Association. The image quality was graded with 4- points scale. The LVEF （left ventricular eject function） was calculated from cardiac CT date and compared with ultrasonic cardiogram by pearson correlation. Results： Forty-three patients accomplished CT examination successfully, in whom, thirty-five cases finished ultrasonic cardiogram also. In 508 evaluated coronary segments, 91.93% could be diagnosed. The LVEF correlation of CT and ultrasonic cardiogram was high （r=0.64）. Conclusion： The 64-slice CT can be used in coronary angiography and left ventricular function analysis simultaneously with high imaging quality of coronary artery and reliable analysis of left ventricular function.