目的 分析三维斑点追踪成像技术联合左室压力-应变环对冠心病早期患者左心室收缩功能减退的评估价值。 方法 选取2022年2月到2024年2月医院收治的97例冠心病早期患者为研究对象，依照左心室收缩功能减退情况分为无左心室收缩功能减退（LVEF值≥ 50%），左心室收缩功能减退（LVEF值< 50%）。所有患者均行临床资料收集、左室压力-应变环、三维斑点追踪成像技术检查。 结果 两组体质量指数、性别、合并糖尿病、高血脂对比差异无统计学意义（P > 0.05），具有可比性；与无左心室收缩功能减退组相比，左心室收缩功能减退组年龄较大，Killip分级Ⅲ-Ⅳ级、多支冠状动脉病变占比较高（P < 0.05）。与左心室无收缩功能减退组相比，左心室收缩功能减退组GWE、GCW、GWI绝对值水平较低，GWW绝对值水平较高（P < 0.05）。与无左心室收缩功能减退组相比，左心室收缩功能减退组面积、圆周、径向、纵向应变水平较低（P < 0.05）。GWE、GCW、GWI、面积、圆周、径向、纵向应变水平与左心室收缩功能减退发生率呈负相关，GWW与左心室收缩功能减退发生率呈正相关（P＜0.05）。ROC分析结果显示，左室压力-应变环、三维斑点追踪成像技术预测冠心病早期患者左心室收缩功能减退的敏感度、准确度低于联合检测（P < 0.05）。 结论 左心室收缩功能减退的冠心病早期患者面积、圆周、径向、纵向应变、GWE、GCW、GWI绝对值水平较低，GWW绝对值水平较高，而上述指标均与左心室收缩功能减退发生率相关，三维斑点追踪成像技术联合左室压力-应变环预测冠心病早期患者左心室收缩功能减退的价值较高。

Objective We tried to analyze the value of three-dimensional speckle tracking imaging technology combined with left ventricular pressure strain loop for evaluation of left ventricular systolic dysfunction in early coronary heart disease patients. Methods 97 patients with early coronary heart disease admitted to our hospital from February 2022 to February 2024 were selected as the research subjects. According to the degree of left ventricular systolic dysfunction， they were divided into those without left ventricular systolic dysfunction （LVEF value ≥ 50%） and those with left ventricular systolic dysfunction （LVEF value < 50%）. All patients underwent clinical data collection， left ventricular pressure strain loop， and three-dimensional speckle tracking imaging technology examination. Results Body mass index， gender， diabetes mellitus and hyperlipidemia were compared between the two groups （P > 0.05）. Compared with the group without left ventricular systolic dysfunction， the group with left ventricular systolic dysfunction is older， with a higher proportion of Killip grades Ⅲ~Ⅳ and multiple coronary artery lesions （P < 0.05）. Compared with the group without reduced left ventricular systolic function， the absolute levels of GWE， GCW， and GWI in the group with reduced left ventricular systolic function were lower， while the absolute level of GWW was higher （P < 0.05）. Compared with the group without left ventricular systolic dysfunction， the left ventricular systolic dysfunction group had lower levels of area， circumference， radial， and longitudinal strain （P < 0.05）. GWE、GCW、GWI、 Area， circumference， radial， and longitudinal strain levels were negatively correlated with the incidence of left ventricular systolic dysfunction， while GWW was positively correlated with the incidence of left ventricular systolic dysfunction （P < 0.05）. The ROC analysis results showed that the sensitivity and accuracy of left ventricular pressure strain loop and three-dimensional speckle tracking imaging technology in predicting left ventricular systolic dysfunction in early coronary heart disease patients were lower than combined detection （P<0.05）. Conclusions Early coronary heart disease patients with reduced left ventricular systolic function had lower absolute levels of area， circumference， radial， longitudinal strain， GWE， GCW， and GWI， and higher absolute levels of GWW. These indicators are all related to the incidence of left ventricular systolic dysfunction. The combination of three-dimensional speckle tracking imaging technology and left ventricular pressure strain loop had high value in predicting left ventricular systolic dysfunction in early coronary heart disease patients.