摘要
目的运用多普勒定量组织速度成像技术(QTVI)分析慢性充血性心力衰竭(CHF)患者的左心室壁运动的失同步特点。方法以慢性心力衰竭患者30例为病例组,30名正常人为对照组。获取标准心尖二腔、心尖四腔、心尖长轴切面的二维彩色组织多普勒图像,脱机测量左心室各室壁基底段、中间段、心尖段的时间间期并计算不同步指标。结果①对照组左心室同一室壁内不同节段、不同室壁同一节段的收缩期达峰时间(Ts)、舒张早期达峰时间(Te)差异均无统计学意义(P均>0.05);②与对照组比较,病例组失同步指标差异均有统计学意义(P均<0.05)。结论 CHF患者左心室壁运动普遍存在失同步性。QTVI可以定量、客观地评价心脏失同步运动。
Objective To analyze desynchronization feature of left ventricle wall motion for chronic congestive heart failure （CHF） using quantitative tissue velocity imaging （QTVI）. Methods Thirty CHF patients were chosen （CHF group）, while 30 healthy adults were selected as control group. Two-dimensional color tissue Doppler images of standardized two- chamber, four-chamber and long-axis view of cardiac apex were taken, time intervals of basal section, middle section, apical section of every ventricle wall in left ventricle were off-line detected, and indexes for desynchronization were calculated. Results ①Time to peak systolic （Ts）, time to peak early diastolic （Te） of different fractions in the same left ventricle wall and different left ventricular wall of control group in the same fraction were not significantly different （all P〉0.05）. ②Indexes for desynehronization between control group and CHF group were significantly different （all P〈0.05）. Conclusion Desynchronization commonly existed in left ventricle motion of CHF patients. QTVI can be used to quantitatively and objectively evaluate heart desynchronization.
出处
《中国医学影像技术》
CSCD
北大核心
2011年第11期2202-2205,共4页
Chinese Journal of Medical Imaging Technology
关键词
慢性充血性心力衰竭
失同步运动
定量组织速度成像
Chronic congestive heart failure
Asynchronous motion
Quantitative tissue velocity imaging
