目的 探讨多层螺旋CT(MSCT) 在评估冠心病患者左心室功能中的应用 价值。方法 选取2016年1月-2017年2月 我院收治的98例冠心病患者(研究组)和 同期在我院体检的30名健康志愿者(健 康组)为对象，纳入对象均行MSCT扫描 检查，观察纳入对象影像学特点，比 较各组左心室功能[左室舒张末期内径 (LVEDD)、左室收缩末期内径(LVESD)、 左室射血时间(LVET)、左室射血分数 (LVEF)]，并分析冠心病狭窄程度、钙 化程度与患者左心室功能的相关性。结 果 与健康组相较，轻度组、中度组、 重度组EDV、ESV明显升高，SV、EF降 低，四组间两两相较均有统计学意义(P ＜0.05)；与无钙化组相较，轻度钙化 组、中度钙化组、重度钙化组EDV、ESV 明显升高，SV、EF降低，四组间两两相 较差异有显著性(P＜0.05)；MSCT扫描可 较好显示冠心病患者左心室短轴位、长 轴位图像，清晰显示冠心病患者舒张期 容积、收缩期容积，准确测量血管狭窄 程度并计算钙化积分。结论 MSCT不仅 可准确评估冠心病患者冠状动脉狭窄及 钙化程度，且可较好分析左心室功能参 数，在一次扫描中可兼顾形态显示及功 能分析，为临床冠心病诊断提供有价值 的信息。

Objective To explore the value of multislice spiral CT (MSCT) in assessing the left ventricular function in patients with coronary heart disease (CHD). Methods A total of 98 patients with CHD (study group) and 30 healthy volunteers (healthy group) who admitted to our hospital during January 2016 -February 2017 were selected as subjects. All subjects underwent MSCT scanning, and imaging features were observed. The left ventricular function [left ventricular end-diastolic dimension(LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular ejection time (LVET), left ventricular ejection fraction (LVEF)] were compared among groups. The correlation between the degree of stenosis and the left ventricular function in patients with CHD was analyzed. Results Compared with the healthy group, EDV and ESV in mild group, moderate group and severe group were significantly higher, while SV and EF were lower, with statistically significant difference between any two groups (P<0.05). Compared with non-calcification group, EDV and ESV in mild calcification group, moderate calcification group and severe calcification group were significantly higher, while SV and EF were lower, with statistically significant difference between any two groups (P<0.05). MSCT scan could well show the short axis and long axis images of the left ventricle in patients with CHD. It could clearly show the diastolic volume and systolic volume of patients with CHD, and accurately measure the degree of vascular stenosis and calculate the calcification score. Conclusion MSCT not only can accurately assess the degree of coronary artery stenosis and calcification in patients with CHD, but also can be used to analyze left ventricular function parameters. One-time scanning is with effects of morphological display and functional analysis, providing valuable information for clinical diagnosis of CHD.