定量组织速度成像技术评价风心病患者心功能的研究

目的采用组织多普勒成像(doppler tissue imaging,DTI) 以及基于此技术的定量组织速度成像(quantitative tissue velocity imaging,QTVI),定量测量风湿性心脏病患者心脏各部分各时相运动速度、幅度,分析心肌舒缩功能的规律,以指导临床.方法对20例正常成年人及25例风湿性心脏病患者的心脏运动情况进行测量及分析比较.结果 (1)患者较正常对照组心脏各腔室均有增大,尤其是心房(P<0.01);左右心室射血分数(EF)及左室短轴缩短百分率(FS)则明显较正常降低(P<0.01);(2)患者较正常对照组心脏二尖瓣环、三尖瓣环下移距离显著减小(P<0.01);患者室间隔、左室外侧壁、右室外侧壁大部分有关舒张、收缩指标均低于正常(P<0.01).结论 (1)DTI/QTVI技术操作简单,表现细节能力优异,适合于观测心脏运动;(2)同时从左右心舒张、收缩功能来评价风湿性心脏病患者心功能更为全面、准确;(3)风心病患者心脏运动协调性、舒张、收缩功能较正常有较大改变.

Evaluation of heart function in patients with RHD by quantitative tissue velocity imaging

Objective To evaluate the heart function in patients with rheumatic heart disease by quantitative tissue velocity imaging.(QTVI). Methods Twenty-five patients with rheumatic heart disease were compared with 20 healthy individuals. The parameters of hearts movement were measured by QTVI . The data were analysed. Results 1.Both the atriums and ventricles in patients were larger than ones in control group (P<0.01). LVEF, RVEF, FS were lower than control group (P<0.01). 2.The SD of mitral and tricuspid annuli were more lower than control group (P<0.01), The most parameters relative to septum, outside wall of left and right ventricles in patients were lower than ones in control group (P<0.01). Conclusion 1. DTI/QTVI is fit for observing and measuring the movement of heart. 2. The movements of heart are turbulence in patients with chronic rheumatic heart disease.