Assessment of cardiac intervals with tissue velocity imaging in normal subjects
- VernacularTitle:组织速度成像评价正常人心动周期时间间期的研究
- Author:
Tiangang ZHU
;
Dayi HU
;
Xin QUAN
;
Xin WANG
;
Long WANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Myocardial contraction;
Cardiac intervals;
Tissue velocity imaging
- From:
Chinese Journal of Ultrasonography
2003;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To quantitatively assess cardiac intervals with tissue Doppler imaging(TDI) and normal reference values. Methods Apical 4 chamber, 2 chamber and long axis views of two-dimensional TDI were acquired in 29 healthy individuals(using GE Vivid 7 commercially ultrasound machine). The basal and middle segments in left ventricle(anterior septal, anterior, lateral, posterior, inferior and septal wall) and in the free wall of right ventricle were analyzed with tissue velocity imaging(TVI) model.Cardiac intervals of each segment, which included the isovolumic contraction time, contraction to peak time, insovolumetric relaxation time, rapid filling time and artrial contraction time were measured using TVI in the left ventricle and free wall of the right ventricle. Results The successful rate of sample was 100% in basal segment of each wall. There were significant differences between the left and right ventricle in the isovolumetric contraction time, the systolic accelaration time, contraction to peak time, isovolumetric relaxation time, early diastolic time, diastasis and artrial contraction( P
