二维斑点追踪成像技术对冠状动脉不同程度狭窄的价值  

The Value of Two-dimensional Speckle Tracking Imaging Technology for Different Degrees of Coronary Artery Stenosis

作　　者：陈博 CHEN bo(Laizhou People's Hospital of Shandong Province,Shandong 261400,China)

机构地区：[1]山东省莱州市人民医院,山东261400

出　　处：《影像技术》2024年第4期30-34,共5页Image Technology

摘　　要：目的:心血管疾病是世界范围内首位致死性疾病,早期评估冠状动脉狭窄程度,能够明显提高患者的生存率,应用二维斑点追踪成像技术,探讨左室整体纵向应变在冠状动脉不同程度狭窄诊断中的的价值。方法:选取我院2023年6月至2024年1月收治的疑似冠心病者,均做冠状动脉造影、常规超声心动图检查、应用二维斑点追踪成像技术测量左室整体纵向应变(Global Longitudinal Strain,GLS),并同时观察牛眼图的颜色变化的61名患者为研究对象,以冠状动脉造影检查的结果为金标准:按照一支或多支冠状动脉管腔或大分支狭窄程度分为三组,低于50%的为对照组,介于50%~70%的为低危组,大于70%的为高危组,比较三组常规超声参数,左室GLS及牛眼图的颜色变化对诊断室壁运动正常的冠状动脉不同程度狭窄的价值。结果:常规超声参数差异无统计学意义(P>0.05);左室GLS随着冠状动脉狭窄程度的加重而降低,差异有统计学意义(P<0.05)。牛眼图随着冠状动脉狭窄程度加重,颜色变浅。结论:在室壁运动正常的冠心病患者中,二维斑点追踪成像技术能够较敏感地发现心肌缺血,左室GLS随着冠状动脉狭窄程度的加重而降低,该技术可能为临床医生提供新的诊断手段。Objective:Coronary artery disease is the world's leading lethal disease.Early assessment of the degree of coronary artery stenosis can significantly improve patient survival.By using two-dimensional speckle tracking imaging technology,the value of overall left ventricular longitudinal strain in the diagnosis of different degrees of coronary artery stenosis is explored.Methods:Sixty one suspected coronary artery disease patients admitted to our hospital from June 2023 to January 2024 were selected as the study subjects,all of whom underwent coronary angiography,conventional echocardiography,and two-dimensional speckle tracking imaging technology to measure the global longitudinal strain(GLS)of the left ventricle,while also observing the color changes of the polar map.The results of coronary angiography were used as the gold standard:divided into three groups according to the degree of stenosis in one or more coronary artery lumens or large branches,with less than 50%being the control group,between 50%~70%being the low-risk group,and more than 70%being the high-risk group.The three groups were compared in terms of conventional ultrasound parameters,GLS of the left ventricle,and color changes in the polar map for diagnosis.The value of different degrees of coronary artery stenosis with nor-mal ventricular wall movement.Results:There was no statistically significant difference in conventional ultrasound parameters(P>0.05);The GLS of the left ventricle decreases with the severity of coronary ar-tery stenosis,and the difference is statistically significant(P<0.05).The polar map becomes lighter in color as the degree of coronary artery stenosis worsens.Conclusion:Coronary artery disease patients with normal wall motion,two-dimensional speckle tracking imaging technology can sensitively detect myocar-dial ischemia,and the GLS of the left ventricle decreases with the severity of coronary artery stenosis.This technology may provide a new diagnostic tool for clinical doctors.

关 键 词：二维斑点追踪技术 左室整体纵向应变 冠状动脉 超声 

分 类 号：R540.45[医药卫生—心血管疾病]