Quantitative tissue velocity imaging in assessing regional myocardial function in acute myocardial infarction treated by coronary stenting.
- VernacularTitle:定量组织速度成像评价冠状动脉内支架植入术对左室心肌局部功能的影响
- Author:
Shan JING
;
Hongwei SUN
;
Yonglin HUANG
- Publication Type:Journal Article
- Keywords:
Quantitative tissue velocity imaging Myocardial infarction Stents
- From:
Chinese Journal of Practical Internal Medicine
2002;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective The function of regional myocardium of patients with myocardial infarction(MI) treated by intra-coronary stenting was determined with quantitative tissue velocity imaging(QTVI).Methods Twenty healthy controls and 24 patients with acute anterior myocardial infarction underwent QTVI with high-frame rates. The myocardial tissue velocity imaging in the apical 4-chamber view and apical 2-chamber view and apical longitude view were digitized and stored. Off-line ventricular walls regional velocity profiles along long axis were obtained, and systolic peak velocities (Vs) and early and late diastolic peak velocities (V E and V A) of 12 regional segments were measured.Results Under normal and ischemic conditions, 6 ventricular walls showed significant basal-apical myocardial velocity in the long-axis reduction in V S and V E and V A were significantly reduced in the abnormal segments in patients with MI. Conclusion QTVI can be used to analyze regional myocardial motion in the long-axis quantitatively and synchronously;intra-coronary stenting can obviously improve regional myocardial function of left ventricle,especially the diastolic function.
