64层螺旋CT与超声心动图评价左室功能的对比研究

目的 研究64层螺旋CT（64SCT）对左心室功能的评估价值，探讨其与超声心动图(Echo)评价左心室功能的相关性。方法 对78例临床拟诊为冠心病的患者分别进行64SCT和Echo检查，测量左室舒张末期容积（LVEDV）、左室收缩末期容积（LVESV）、左室射血分数（LVEF）、左室每搏输出量（LVSV）、左室心肌质量（LVMM）。结果 64SCT与Echo所测左室功能参数（LVEDV、LVESV、LVEF、LVSV、LVMM）有高度相关性(r分别为0.959，0.758，0.918，0.989和0.978，P<0.001),相关性可被临床接受。64SCT所测LVEDV、LVESV较Echo所测大，有统计学意义（t分别为5.860和4.783，P<0.05）；LVEF、LVMM较Echo小，有统计学意义（t分别为-5.145和-8.442，P<0.05）；LVSV较Echo大，无统计学意义（t为1.978，P>0.05）。结论 64SCT与Echo在评价左心室功能方面具有较好的相关性。

Assessment of Left Ventricular Systolic Function with 64-Slice Multidetector CT: a Comparison with Echocardiography

Objective:To compare the measurement of the parameters of left ventricular systolic function using 64-slice multidetector CT(64SCT) with that using echocardiography(Echo).Method:A total of 78 patients who were suspected to coronary artery disease(CAD) underwent contrast-enhanced 64SCT with retrospective electrocardiographic-gating，and Echo to acquire left ventricular end diastolic volume(LVEDV)、left ventricular end systolic volume（LVESV）、left ventricular ejective fraction(LVEF）、left ventricular stroke volume(LVSV)and left ventricular myocardial mass(LVMM）.Result:The parameters of left ventricular function obtained with 64SCT were significantly correlated with the Echo data(r=0.959，0.758，0.918，0.989 and 0.894，P<0.001). There was a significantly larger overestimated of LVEDV and LVESV with 64SCT than with Echo(p<0.05).LVEF and LVMM was lower by 64SCT than Echo(p<0.05).LVSV was not significantly different(p>0.05).Conclusion:An excellent correlation between 64SCT and Echo is found for all parameters of left ventricular function.