超声定量组织速度成像对病变心肌节段纵向运动速度的研究  

Investigation of ultrasonic quantitative tissue velocity imaging on longitudinal movement of the diseased left ventricular myocardial segments

作　　者：张生光[1] 俞静[1] 汪荣金[1] 陈爱[1] 黄云健[1] 廖姮[1] 李伟伟[1] 骆合德[2] 

机构地区：[1]浙江湖州市解放军第98医院特诊科,313000 [2]浙江湖州市解放军第98医院心内科,313000

出　　处：《上海医学影像》2007年第3期202-203,206,共3页Shanghai Medical Imaging

摘　　要：目的探讨定量组织速度成像(QTVI)技术与冠状动脉狭窄左室相关的节段心肌运动速度变化的定量关系。方法应用定量组织速度成像技术对31例冠状动脉造影证实的冠状动脉狭窄病人(病变组)和21例正常人(对照组)左室心肌的12个节段测量其QTVI曲线的收缩期峰值速度(Vs)、舒张早期峰值速度(Ve)和舒张晚期峰值速度(Va)。结果左前降支、回旋支和右冠状动脉狭窄供血区节段心肌的Vs、Ve与正常组比较均具有显著性差异(P<0.001或P<0.05),Va则无统计学意义。左前降支狭窄轻、中、重度狭窄组之间各指标相比均无显著性差异。结论定量组织速度成像的Vs和Ve能较准确地检出冠心病人静息状态下冠状动脉狭窄供血区的异常心肌节段,但对区分冠状动脉的狭窄程度似无显著作用。Objective To observe the longitudinal movement of the diseased left ventricular myocardial segments and to find out the relationship between the diseased segment movement and the degree of coronary artery stenosis by using quantitative tissue velocity imaging （QTVI）. Methods Twenty-one normal subjects （ control group ） and 31 cases （ diseased group ） with coronary heart disease confirmed by coronary arteriography were included for QTVI study. In each case, 12 left ventricular segements were analyzed by QTVI and velocity at systole （Vs）,early diastole （Ve） and artrial contraction （Va） were obtained and compared between two groups. Results Vs and Ve at the myocardial segment of stenotic coronary artery in diseased group were significantly lower than those in control group （P〈0.01 or P〈0.05 ）. No significant difference was found in each index among cases with different degrees of stenosis. Conclusion Using Vs and Ve index of QTVI, we can accurately detect the abnormal myocardial segements with coronary artery stenosis at rest, but it seems helpless in determining the deglee of coronary artery stenosis.

关 键 词：定量组织速度成像 冠状动脉狭窄 冠状动脉造影 

分 类 号：R654.2[医药卫生—外科学]