自然组织谐波显像对多巴酚丁胺负荷试验心内膜显示的增强作用  

Improved Endocardial Border Resolution during Dobutamine Stress Echocardiography with Native Tissue Harmonic Imaging

作　　者：陈立军[1,2] 谢峰[1,2] 李建蓉[1,2] 张天伦[1,2] 杨浣宜[1,2] 刘汉英[1,2] 吴清玉[1,2] 陆兆林 陈婉姿 

机构地区：[1]中国医学科学院中国协和医科大学心血管病研究所阜外心血管病医院超声科 [2]美中互利工业公司

出　　处：《中国超声医学杂志》1998年第7期40-42,共3页Chinese Journal of Ultrasound in Medicine

基　　金：国家自然科学基金

摘　　要：应用自然组织谐波显像（ＮＴＨＩ）结合ＬＤＤＳＥ研究了８例冠心病患者。数字化采集静息、５μｇ／ｋｇ／ｍｉｎ、１０μｇ／ｋｇ／ｍｉｎ和用药后３～５分钟的图像。分析心尖四腔心和两腔心切面心内膜的显示情况。在常规超声检查时，１６个切面中有９个切面至少有１段心内膜显示不清，ＬＤＤＳＥ时对心内膜的显示无变化。ＮＴＨＩ状态后，所有切面，包括９个有心内膜显示不清的切面在静息、５μｇ／ｋｇ／ｍｉｎ、１０μｇ／ｋｇ／ｍｉｎ和用药后３～５分钟均提高了对心内膜的识别能力（达３级）。因此，ＮＴＨＩ可明显提高对静息状态和负荷时心内膜边界的识别能力，既使对声窗较差、常规超声显示不清的节段也可改善静息和负荷时的心内膜边界。该方法简便易行，有助于更好地进行超声负荷试验结果的判定及心功能的分析，对拓展负荷超声试验的应用范围。A combination of Native Tissue Harmonic Imaging(NTHI)and low dose dobutamine stress echocardiography technics was used in 8 CHD patients.The images presented during baseline,5 μg/kg/min,10 μg/kg/min and recovery were digitized by routine and NTHI examination.In 16 views,there were inadequate border resolution in at least 1 segment of 9 views and no change during LDDSE.After NTHI,all views,including 9 views with some segments not clearly defined previously,had significant improvement in endocardial border resolution during baseline,stress and recovery.Thus,NTHI can significantly improve border delineation.This method can enhance the interpreters ability to assess regional wall motion and to analysis of LV function,and permit to extend the applicability of stress echocardiography.

关 键 词：多巴酚丁胺 超声心动图 心内膜 谐波显像 

分 类 号：R540.45[医药卫生—心血管疾病]