Vector flow mapping evaluation of regional left ventricular flow structure in patients with myocardial infarction
10.3760/cma.j.issn.1004-4477.2012.07.006
- VernacularTitle:超声血流向量成像评价心肌梗死患者左心室节段性血流结构变化
- Author:
Shuping YANG
;
Haolin SHEN
;
Wenting JANG
;
Huobiao SHE
;
Jiahua YE
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Myocardial infarction;
Ventricular function,left;
Vector flow mapping
- From:
Chinese Journal of Ultrasonography
2012;(7):575-580
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate blood flow structure within left ventricle,quantify the variation of the flow at infarct segments,and assess the impact of myocardial infarction.Methods Twenty-eight patients with chronic myocardial infarction(CMI)and 30 healthy controls were involved.The flow vector images on the section plane of the flow within the left ventricle were acquired by vector flow mapping(VFM).Timeflow(T-F)curve and all other peak systolic and diastolic flow curve include normal velocity profile,parallel velocity profile,vector profile were analyzed by DSA-RSI program.Results Ventricular ejction peak S,rapid ventricular filling peak E and atrial systole peak A were relatively lower in CMI group at infarct segment than normal control group,the time duration from bottom to peak was relatively longer in CMI group.Normal velocity profile,parallel velocity profile,vector profile,flow profile at peak S and E were lower in CMI group than normal group.Conclusions The velocity of CMI group was lower and the time to peak was longer than that of control group.VFM is a new noninvasive and clinically useful parameter for the evaluation of regional left ventricular segment flow dynamics.
