组织速度成像在急性心肌缺血中的应用  

Evaluation of acute myocardial ischemia using tissue velocity imaging.

作　　者：张文军[1] 郭智宇[1] 陈清亮[1] 

机构地区：[1]成都市温江区人民医院功能科,四川成都611130

出　　处：《四川医学》2013年第8期1239-1241,共3页Sichuan Medical Journal

摘　　要：目的探讨组织速度成像在急诊室对急性心肌缺血患者的临床诊断价值。方法应用配备高级心血管定量分析软件的GE Vivid 7超声诊断仪器对32例正常人及25例急性心肌缺血患者的左心室心肌18节段组织速度及速度达峰时间进行定量分析。结果正常组左心室基底段、中间段和心尖段的组织速度依次递减,基底段最大,心尖段最小。速度达峰时间均一致;急性心肌缺血组左室各节段速度均减低,但差异无统计学意义。各节段速度达峰时间不同步,缺血的心肌节段较其他节段延迟明显,并有统计学差异。正常组心肌组织速度均大于急性心肌缺血组并有统计学差异。结论组织速度成像可作为急性心肌缺血临床诊断的新指标。Objective To investigate clinical diagnosis value of patients with acute myocardial isehemiausing tissue veloc- ityimaging in the emergency room. Methods We quantitated velocity and time to peak velocityof left ventricular 18 segment through 32 normal persons and 25 patients with acute myocardial ischemia using GE Vivid 7 unit and Q-analysis software. Results LV longitudinal velocity were significantly decreasing from basal to apical segment in the normal group, the value of basal seg- ment waslargest, apical segment was smallest and time to peak velocity were synchronized. All segments of LV longitudinal velocity were reduced without the statistically difference and time to peak velocity werenot synchronized and time of ischemic segments were delay than other segments with significant difference. The LV segment velocity were greater in the normal group than acute myocar- dial ischemiagroup with statistically significant difference. Conclusion Tissue velocityimaging providea new diagnosis parameter for evaluation of acute myocardial ischemia.

关 键 词：超声心动描记术 组织速度成像 心肌 速度达峰时间 

分 类 号：R542.22[医药卫生—心血管疾病]