定量组织速度成像评价扩张型心肌病患者左室壁运动的非同步性  

Evaluating Left Ventricular Asynchrony in Patients with Dilated Cardiomyopathy Using Quantitative Tissue Velocity Imaging

作　　者：李剑平[1] 钱孝纲[1] 徐伟忠[1] 戴萍[1] 董磊[1] 

机构地区：[1]常熟市第二人民医院超声科,江苏省215500

出　　处：《中国超声诊断杂志》2005年第9期659-661,共3页Chinese Journal of Ultrasound Diagnosis

摘　　要：目的应用定量组织速度成像(QTVI)评价扩张型心肌病患者左室壁收缩、舒张的非同步性。方法利用QTVI技术获取22例扩张型心肌病患者(A组)和20例正常人(B组)的左室壁运动速度曲线,分别测量心尖四腔心、心尖二腔心和心尖长轴切面的左室基段及中段的各相对节段的收缩期及舒张早期速度峰延迟的时间(dTs和dTe)。结果扩张型心肌病患者的收缩期及舒张早期速度峰延迟的时间均明显大于正常组(P<0.001),中段前室间隔-后壁及中段后室间隔-侧壁为最大收缩、舒张延迟部位。结论QTVI在评价扩张型心肌病患者左室壁收缩、舒张的非同步性方面有较大的应用价值。Objective To evaluate the contraction and relaxation asynchrony of the left ventricular wall in patients with dilated cardiomyopathy（DCM）using quantitative tissue velocity imaging （QTVI）. Methods Twentytwo patients with DCM （group A） and 20 healthy subjects （group B） were studied at apical four-chamber, twochamber view and apical longitudinal views using QTVI. The delayed time of the peak velocity were measured in the basal and middle segment of the left ventricle in systolic and early diastolic period respectively. Results The delay of the peak velocity in systolic and early diastolic period in patients with DCM were significantly higher than those of the normal group （P〈0. 001）, while the highest delay showed in the anterior septal-posterior wall and posterior septal-lateral wall of the middle segments. Conclusions QTVI is useful for evaluating the contraction and relaxation asynchrony of the left ventricular wall in patients with DCM.

关 键 词：组织多普勒 定量组织速度成像 非同步性 定量组织速度成像评价 扩张型心肌病患者 左室壁运动速度 同步性 QTVI技术 舒张早期 收缩期 

分 类 号：R541.105[医药卫生—心血管疾病] R542.2[医药卫生—内科学]