Evaluation of myocardial perfusion and systolic function in patients with different degree of coronary artery stenosis by MCE and 2D-STI.
10.11817/j.issn.1672-7347.2020.180729
- Author:
Wenjuan CHEN
1
;
Wenhui ZHU
1
;
Yan WANG
2
Author Information
1. Department of Ultrasonography, Third Xiangya Hospital, Central South University, Changsha 410013, China.
2. Health Management Center, Third Xiangya Hospital, Central South University, Changsha 410013, China.
- Publication Type:Journal Article
- Keywords:
myocardial contrast echocardiography;
myocardial perfusion;
speckle tracking imaging
- MeSH:
Coronary Circulation;
Coronary Stenosis;
Echocardiography;
Humans;
Myocardium;
Systole
- From:
Journal of Central South University(Medical Sciences)
2020;45(1):35-39
- CountryChina
- Language:English
-
Abstract:
OBJECTIVES:To study myocardial perfusion and systolic function in patients with different coronary artery stenosis by myocardial contrast echocardiography (MCE) and two-dimensional speckle tracking imaging (2D-STI).
METHODS:MCE, 2D-STI and coronary angiography were conducted in patients with coronary heart disease in our hospital. Myocardial segments were divided into 4 groups according to the degree of coronary artery stenosis: group A (normal group), group B (mild stenosis, 50%-75%), group C (moderate stenosis, 76%-90%) and group D (severe stenosis, 91%-100%). Blood volume, blood flow velocity, blood flow and longitudinal myocardial strain value (SL) in each group were measured by analysis software for MCE and 2D-STI. The differences in blood volume, blood flow velocity, blood flow and SL were evaluated.
RESULTS:The blood flow velocity and blood flow in B, C and D groups were decreased gradually, with significant difference (<0.05). There was no significant difference in blood volume, blood flow velocity, blood flow between group A and group B (>0.05). There were significant differences in SL among the 4 groups (<0.05).
CONCLUSIONS:There is a good correlation between coronary stenosis degree and myocardial perfusion or systolic function. The ability of 2D-STI to detect mild stenosis of coronary artery is better than MCE.
