实时三平面定量组织速度成像评价心肌梗死患者心内、外膜下心肌运动  

Real-time triplane quantitative tissue velocity imaging in evaluation on endocardium and epicardium motion pattern in patients with myocardial infarction

作　　者：邓玉姣[1,2] 夏稻子[1] 李阳[1] 杨冰冰[1] 宣健媛[1] 

机构地区：[1]大连医科大学附属第二医院超声科,辽宁大连116027 [2]大连医科大学研究生院,辽宁大连116027

出　　处：《中国医学影像技术》2014年第6期854-857,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的应用实时三平面定量组织速度成像(Triplane-QTVI)技术定量评价左心室不同透壁程度梗死心肌节段心内、外膜下心肌运动情况。方法对26例非ST段抬高型心肌梗死(NSTMI)患者(A组)、39例ST段抬高型心肌梗死(STMI)患者(B组)及25名健康志愿者(正常组)采集实时三平面组织速度图像,测量左心室梗死心肌节段收缩期心内膜下心肌峰值运动速度(Vs-endo)、心外膜下心肌峰值运动速度(Vs-epi)及其比值i(i=Vs-endo/Vs-epi)。结果①正常组Vs-endo、Vs-epi均呈基底段、中间段至心尖段递减的趋势,同一心肌节段Vs-endo均>Vs-epi,i>1。②与正常组比较,A组梗死心肌节段Vs-endo均明显减低(P<0.05),Vs-epi差异不具有统计学意义(P>0.05),i<1(P<0.05)。③与正常组比较,B组梗死心肌节段Vs-endo、Vs-epi均明显减低,i≈1(P<0.05)。④A、B两组梗死心肌节段之间比较Vs-epi、i差异有统计学意义(P<0.05)。结论 NSTMI型心肌梗死及STMI型心肌梗死患者梗死心肌节段呈现不同的收缩运动特征;同一心肌节段Vs-endo、Vs-epi及其比值能敏感反映心肌是否受损及受损程度。Objective To investigate the endocardial velocity, epicardial velocity and ratio of left ventricle in patients with different transmural extent of myocardial necrosis using real-time triplane quantitative tissue velocity imaging （Triplane-QTVI）. Methods Twenty-six patients with non ST-segment elevation myocardial infarction （group A）, 39 patients with ST-segment elevation myocardial infarction （group 13） and 25 normal controls underwent Triplane-QTVI. The endocardial systolic peak velocity （Vs-endo）, epicardial systolic peak velocity （Vs-epi） and ratio index （i, i： Vs-endo/Vs-epi） at infarction myocardium in group A and 13 were measured with Triplane-QTVI software. Results ①In control group, Vs-endo and Vs-epi went lower in basal segment, the middle segment and the apical segment, and Vs-endo〉Vs-epi in the same segment and i 〉 1 were found. ②Compared with the control group, in group A, Vs-endo significantly reduced （P〈0. 05）, Vs-epi was slightly lower （P〈0.05）, i〉1 （P〈0.05）. ③Compared with the control group, Vs-endo and Vs-epi significantly reduced and i was close to 1 in group B （all P〈0. 05）. ④Vs-epi and i were all statistically different between group A and group B （all P〈0.05）. Conclusion The ventricular wall motion pattern suffered different damage between nonST- segment elevation myocardial infarction and ST-segment elevation myocardial infarction patients. Vs-endo, Vs-epi and i are valuable indicators of myocardium damage in patients with different transmural extent of myocardial necrosis.

关 键 词：超声心动描记术 定量组织速度成像 心肌梗死 心室功能 左 

分 类 号：R542.2[医药卫生—心血管疾病] R540.45[医药卫生—内科学]