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目的评价双源CT(dual source CT,DSCT)在评估冠心病患者整体心功能和室壁运动与临床常规超声心动图(echocardiogram,ECG)的一致性。资料与方法将25例冠心病患者DSCT冠状动脉成像数据用以心功能评估,估测射血分数(EF)、左室短轴缩短率(FS)和节段性室壁运动,并和ECG对比。结果DSCT和ECG测得25例FS、EF的差异无显著统计学意义(P值分别约0.71,0.26,均>0.05),相关性均良好(r分别约0.86和0.87,P均<0.001);两种方法对室壁运动的判断按病例数和节段数计算一致性均很好(Kappa值分别约0.85、0.86,P均<0.001);DSCT诊断的室壁运动异常节段的室壁增厚率较对侧显著减低(P<0.01)。结论DSCT时间分辨率高,在复杂心率情况下也可完成对整体和节段性左室收缩功能的评估,与ECG一致性良好,能为冠心病的诊断和预后判断提供更有价值的信息。
Objective To evaluate the consistency of dual source CT (DSCT) in the assessment of global cardiac function and wall motion in patients with coronary heart disease and clinical echocardiogram (ECG). Materials and Methods DSCT coronary angiography data of 25 patients with coronary heart disease were used to evaluate cardiac function, ejection fraction (EF), shortening of left ventricular fraction (ST) and segmental wall motion were evaluated and compared with ECG . Results There was no significant difference in the scores of FS and EF between DSCT and ECG (P = 0.71,0.26, all> 0.05). The correlation between them was good (r = 0.86 and 0.87, P <0.001) The two methods for the determination of ventricular wall motion according to the number of cases and the number of sections calculated consistency were good (Kappa values were about 0.85,0.86, P <0.001); DSCT diagnosis of ventricular wall motion abnormalities segment wall thickening Rate was significantly lower than the contralateral (P <0.01). Conclusions DSCT has high temporal resolution and can assess global and segmental LV systolic function under complex heart rate. It has good consistency with ECG and can provide more valuable information for diagnosis and prognosis of coronary heart disease.