64排螺旋CT评价冠状动脉及左心功能的临床价值

目的：研究64排螺旋CT同时评价冠状动脉及左心功能的临床应用价值。方法：322例同期行冠状动脉CTA（Computed Tomography Angiography）和二维经胸超声心动图（2-DimensionalTransThoracic Echocardiography,2D-TTE）检查,利用回顾性心电门控技术,评估冠状动脉狭窄程度、范围及斑块性质,同时获取左心功能数据与2D-TTE进行对比分析。结果：心脏CTA检查成功率为96.0%（309/322例）,冠状动脉狭窄患者253例共649处硬化斑块,狭窄程度平均为40.51±19.33%;64-MDCT测得左心室舒张末期容积（left ventricular end-diastolic volume,LV-EDV）、左心室收缩末期容积（left ventricular end-systolic volume,LV-ESV）及左心室射血分数（left ventricular ejection frac-tion,LVEF）与2D-TTE检查结果间无显著性差异。结论：利用64-MDCT通过单次心脏CTA检查可以同时对冠状动脉情况及左心功能进行准确评价,有很高的临床应用价值。

Clinical Value of 64-slice Multidetector CT in Evaluation of Coronary Artery Disease and Left Ventricular Function

Objective： To assess the clinical value of 64-slice multidetector CT in evaluation of coronary artery disease and left ventricular function.Method： 322 patients with varying degrees of coronary artery stenosis were simultaneously performed coronary artery computed tomography angiography（CTA） and two-dimensional transthoracic echocardiography（2D-TTE） examinations.Coronary artery degree of stenosis,extent and plaque features were assessed by using retrospective ECG gating technique.Meanwhile,left ventricular function data obtained from the two methods were compared.Result： 96.0%（309/322 cases） were successfully evaluated by CTA.A total of 253 cases with coronary artery stenosis（40.51 ± 19.33%） and 649 atherosclerotic plaques were detected.The left ventricular end-diastolic volume（LV-EDV）,left ventricular end-systolic volume（LV-ESV）,left ventricular ejection fraction（LVEF）,respectively obtained from 64-MDCT and 2D-TTE,There wasn’t significant difference between the two methods.Conclusion： By a single CTA scan,the 64-MDCT,evaluating coronary artery disease and simultaneously measuring accurate indicators of left ventricular function,demonstrate a high clinical application value.