彩色多普勒组织成像评价心壁运动和激动顺序的实验研究  

Experimental Studies of Cardiac Wall Movement and Exciting Sequence by Color Doppler Tissue Imaging

作　　者：陈丽[1] 沈学东[1] 蔡乃绳[1] 张高星 洪涛[1] 朱伟[1] 姚瑞明 陈灏珠[1] 沈理[1] 方超 王亚华 杨德威 

机构地区：[1]上海医科大学中山医院,上海市心血管病研究所,上海市崇明中心医院

出　　处：《中国超声医学杂志》1996年第11期1-4,共4页Chinese Journal of Ultrasound in Medicine

摘　　要：本文采用超声心动图彩色多普勒组织成像（ＤＴＩ）新技术对６条开胸犬正常心脏运动进行研究。通过用速度、加速度显示方式分析心脏各标准切面的室壁运动发现：（１）ＤＴＩ能对心脏各室壁节段的运动作出正确的彩色编码，心脏各节段及心肌各层运动速度并非一致，左室后壁的运动速度高于前壁及前间隔的运动速度，室间隔左室面高于右室面，以左室后壁心内膜面运动速度最高，反映了心肌各节段的收缩能力的不一致性，这种不一致性也可能与心肌纤维特殊的排列方式有关；而且认为在分析室壁运动时，尤其是定量分析时，应考虑到室壁运动的这种差异；（２）从加速度显示方式分析，能够直视心肌传导上的差异，再现心肌激动的顺序，与心肌传导的电生理研究结果基本相符，为今后评价心脏传导系统的疾病提供客观的依据。We studied the normal cardiac wall movement in 6 normal open-chested dog using the newdeveloped echocardiographic color Doppler tissue imaging(DTI)technique.The wall movement'various standard views were analyzed by velocity and accelerating display mode. We found①The movement of ventricular wall could be correctly color coded by DTI, and the movement was not consistent in every segment or every layer.The velocity of posterior left ventricular wall was higher than that of anterior wall and anterior septum, the velocity of left ventricular inner surface was higher than that of right,and the velocity in posterior left ventricular inner surface was the highest.The contractility was not constant in every segment which was thought to be related to the special queue of cardiac fibers.It should be considered that the variance in wall movement be important,esp.in quantitative studies.②The difference in conduction could be viewed by accelerating displaying mode.The cardiac wall excitement correlated principally well to that of electrophysiologic study.Thus an objective criterion was provided for assessing cardiac conduction abnormalities.

关 键 词：彩色多普勒 组织成像 心壁运动 激动顺序 

分 类 号：R540.45[医药卫生—心血管疾病] R445.1[医药卫生—内科学]