摘要
目的应用应变率成像(SRI)技术定量评价心肌梗死后左室局部室壁运动异常。方法20例正常人及20例心肌梗死患者,获取左室长轴心尖切面、心尖四腔及心尖两腔心切面的3个连续心动周期的动态图像,应用SRI技术分别测量相应节段的收缩期峰值应变率(PSSR)、舒张早期峰值应变率(PESR)、舒张晚期峰值应变率(PASR)及收缩期峰值应变(PSS)。结果与正常节段比较,缺血节段的PSSR、PESR和PSS明显减低,PASR的变化无统计学意义。结论SRI参数能够敏感地检出心肌梗死患者室壁运动异常的节段,表明应变及SRI可以作为评价局部心肌缺血的定量指标。
Objective To study the application of strain rate imaging（SRI） quantitative evaluation on myocardial infarction left ventricular regional wall motion abnormalities.Methods 20 normal cases and 20 myocardial infarction patients were obtained the dynamic images of left ventricular apical long-axis cross-section,apical four-chamber and apical two chamber view of three consecutive cardiac cycle.The SRI was applied to measure the contraction peak strain rate（PSSR）,peak early diastolic strain rate（PESR）,peak late diastolic strain rate（PASR） and peak systolic strain（PSS）.Results Compared with those of the normal segments,the PSSR,PESR and PSS of ischemic segments were significantly reduced,and the PASR had no significant changes.Conclusions SRI parameters can be sensitive to the detection of abnormal wall motion segments of myocardial infarction patients.SRI can be used as quantitative indicator to evaluate myocardial ischemia segments.
出处
《中国老年学杂志》
CAS
CSCD
北大核心
2009年第16期2025-2026,共2页
Chinese Journal of Gerontology
基金
吉林省科技发展计划项目(200705114)
关键词
应变率成像
心肌梗死
Strain rate imaging
Myocardial infarction
