组织追踪和应变率显像技术评价右室心肌梗死患者右室收缩功能

摘要

Objective To explore the clinical application value of ultrasound tissue tracking( TTI) and strain rate imaging( SRI) in diagnosis of right ventricular myocardial infarction and evaluating right ventricular systolic function. Methods Twenty patients with acute right ventricular myocardial infarction and 24 healthy controls were enrolled in this study, Their right ventricular apical two chamber view and apical four chamher view were examined by TTI and SRI. The peak systolic displacement( PDS) of right ventricular anterior, inferior wall, lateral wall and the maximum systolic strain rate ( SSR) were detected. Results The PDS and SSR in patients with right ventricular myocardial infarction were lower than those in control group (P ＜0. 05 ) , and the diagnostic sensitivity of SSR was higher than PDS( P ＜0. 05 ) . Conclusion TTI and SRI can accurately diagnose right ventricular myocardial infarction,and can quantitatively evaluate the right ventricular systolic function.%目的 探讨超声组织追踪(TTI)和应变率显像(SRI)技术在诊断右室壁心肌梗死和评价右室局部收缩功能中的临床应用价值.方法 采用TTI和SRI技术对20例急性右室梗死患者和24例健康对照者的右室心尖两腔心切面和四腔心切面进行扫查,检测分析右室前壁、下壁、侧壁收缩期峰值位移值(PDS)、收缩期最大应变率(SSR).结果 右室心肌梗死患者的PDS和SSR均较对照组降低(P＜0.05),而SSR较PDS显示结果更敏感(P＜0.01).结论 TTI和SRI技术能够准确地诊断右室壁心肌梗死,并能对右室局部收缩功能进行定量评价.