应用斑点追踪成像技术评价心力衰竭患者左室短轴二维应变  

Clinical study on left ventricular short-axis strain in patients with heart failure by speckle tracking imaging

作　　者：王丽[1] 高东梅[1] 宋军[1] 冯海燕[1] 王迪[1] 倪璐佳[1] 董璠[1] 

机构地区：[1]吉林大学中日联谊医院超声科,吉林长春130033

出　　处：《心脏杂志》2011年第3期361-363,共3页Chinese Heart Journal

基　　金：吉林省科技厅计划项目资助课题(20090731)

摘　　要：目的:应用斑点追踪成像技术(STI)测量正常人及慢性心力衰竭患者(HF)左室短轴各节段二维应变,探讨STI技术评价HF患者左室功能的临床价值。方法:采集HF患者及对照组左室短轴(二尖瓣、乳头肌、心尖水平)二维高帧频图像,测量各节段的收缩期径向应变(Rs)、环向应变(Cs)。结果:对照组Rs在同一水平各节段间差异无统计学意义,乳头肌水平显著高于心尖水平,Cs在同一水平各节段间差异有统计学意义(P<0.05)。HF组各短轴水平整体Rs、Cs及各节段的Rs、Cs均显著低于对照组(P<0.01)。结论:HF患者左室各短轴水平及各节段收缩期径向及环向应变均明显低于正常人,提示其左室短轴收缩功能明显受损。AIM： To evaluate the clinical value of speckle tracking imaging in the measurement of left ventricular short-axis views regional strain in patients with heart failure. METHODS： High-frame rate two-dimensional images were recorded from the left ventricular short-axis views and regional radial strain and circumferential strain were measured in the left ventricular short-axis views from heart failure patients and from control group. RESULTS： In the control group no significant difference was observed in regional radial strain of the same short-axis and the radial strain of papillary muscle views was higher than apex views. A significant difference was seen in circumferential strain of the same short-axis （P 〈 0.05 ）. Compared with control group, regional radial strain and circumferential strain in patients with heart failure significantly decreased （all P 〈0.01 ）. CONCLUSION： Radial strain and circumferential strain in all segments are significantly reduced in patients with heart failure, which indicates that systolic function in left ventricular short-axis of patients with heart failure is severely impaired.

关 键 词：斑点追踪成像技术 心力衰竭 应变 

分 类 号：R541.1[医药卫生—心血管疾病]