Detection different coronary artery stenosis by integrated backscatter combined with dobutamine stress echocardiography
- VernacularTitle:背向散射技术结合多巴酚丁胺负荷试验检测不同部位冠状动脉狭窄
- Author:
Qing ZHOU
;
Ruiqiang GUO
;
Jinling CHEN
;
Lan LIU
;
Lidan HAO
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Dobutamine;
Coronary disease;
Integrated Backscatters
- From:
Chinese Journal of Ultrasonography
2003;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate whether the sensitivity and specificity of detecting different coronary artery stenosis could be improved by cyclic variation of integrated backscatter(CVIB) under dobutamine stress echocardiography (DSE).Methods Thirty-two patients with suspected coronary artery disease underwent DSE before selected coronary angiography.CVIB of the left ventricular myocardial segments supplied by three coronary branches was analyzed at the baseline and the stages of DSE.Results Comparing with the value of baseline and low dose stages,in ischemic myocardium,CVIB decreased under high dose.While in non-ischemic myocardium,CVIB showed no difference at all stages of DSE.Taking CVIB
