应用多普勒组织成像脉冲技术对正常人左室前壁和下壁运动分析  

Analysis of Anterior and Inferior Myocardial Wall Motion in Normal Subjects Using Pulsed Doppler Tissue Imaging

作　　者：马小静[1,2] 李治安[1,2] 王新房[1,2] 杨娅[1,2] 刘俐[1,2] 谢明星 吕清[1,2] 

机构地区：[1]同济医科大学附属协和医院超声影像科 [2]十堰市太和医院

出　　处：《中国医学影像技术》1999年第1期2-5,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的运用多普勒组织成像（ＤＴＩ）脉冲技术对正常人左室局部收缩和舒张运动分析，探讨ＤＴＩ对心脏检测的应用价值。方法通过多普勒组织速度图与脉冲频谱图显示方式检测２１例健康成人心尖两腔图左室前壁和下壁各段运动。结果①前壁基段和中段心内膜面收缩速度（１３８３±２９１ｃｍ／ｓ、１０３８±３０４ｃｍ／ｓ）高于心外膜面（１０７６±２８６ｃｍ／ｓ、８６８±２２９ｃｍ／ｓ）（Ｐ＜００５），下壁基段和中段心内膜面收缩速度（１０８１±２０５ｃｍ／ｓ、７９１±１９３ｃｍ／ｓ）、亦高于外膜面（９５６±１８２ｃｍ／ｓ、６５８±１６９ｃｍ／ｓ）（Ｐ＜００５）。②前壁和下壁各段间比较：收缩、舒张速度及时间速度积分基段高于中段、中段高于心尖段，基段与心尖段差异尤为显著。③前壁与下壁比较：前壁收缩速度（９５６±２７５ｃｍ／ｓ）高于下壁（７４４±１６０ｃｍ／ｓ）（Ｐ＜００５），但舒张运动速度和时间速度积分等指标两壁间无显著差异。结论多普勒组织成像脉冲技术能实时测量心肌各部位的运动速度，为评价正常心肌状态及病理性变化提供了一项无创性技术。Objectives This study was performed to evaluate left ventricular regional contraction and relaxasion in normal subjects by pulsed Doppler tissue imaging.Methods We assessed anterior and inferior wall motion from two chamber view in normal subjects using DTV mode and DT PW mode.Results ①The systolic peak velocties of endocardial myocardium were higher than those of epicardial myocardium in basic and middle segments of anterior and inferior wall.②The systolic and diastolic velocities and time velocity integrals of basic segment were higher than those of middle segment and the values of apical segment were lower than those of middle segment.③The systolic velocity of anterior wall (9.56±2.75cm/s) was higher than that of inferior wall(7.44±1.60cm/s)( P <0.05).Conclusion This study demonstrated that DTI could detect difference of the wall motion between endocardial and epicardial myocardium and provide a quantitative analysis to study normal heart and pathologic heart disease. [

关 键 词：组织成像 室壁运动 超声波诊断 

分 类 号：R540.4[医药卫生—心血管疾病] R445.1[医药卫生—内科学]