CAJ | 학술논문

目的探讨二尖瓣流场均匀性的向量血流图(VFM)定量检测方法及二尖瓣狭窄程度与流场均匀性之间的关系.方法采用VFM技术对正常人和二尖瓣狭窄患者二尖瓣流场均匀性进行对比研究.结果二尖瓣狭窄患者VFM流场均匀性指标显著高于正常人(P<0.05),且该指标与二尖瓣有效瓣口面积呈明显负相关(胸骨旁左室长轴观r=-0.816,P=0.000;心尖四腔观r=-0.825,P=0.000).结论 VFM技术能客观反映正常人及二尖瓣狭窄患者二尖瓣流场均匀性情况.
목적 탐토이첨판류장균균성적향량혈류도(VFM)정량검측방법급이첨판협착정도여류장균균성지간적관계.방법 채용VFM기술대정상인화이첨판협착환자이첨판류장균균성진행대비연구.결과 이첨판협착환자VFM류장균균성지표현저고우정상인(P<0.05),차해지표여이첨판유효판구면적정명현부상관(흉골방좌실장축관r=-0.816,P=0.000;심첨사강관r=-0.825,P=0.000).결론 VFM기술능객관반영정상인급이첨판협착환자이첨판류장균균성정황.
Objective To establish a quantitative measurement of flow field uniformity of mitral valve in vivo and investigate the correlation between the parameter of flow field uniformity and the degree of mitral stenosis. Methods The flow field uniformity downstream of mitral valve in normal cases and patients with mitral stenosis were studied using vector flow mapping(VFM) technique. Results The flow field uniformity parameter of standard deviation of velocity (Vsd) in patients with mitral valve stenosis was significantly higher than that in control group ( P <0. 05). There was a negative linear correlation between Vsd and effective orifice area(EOA) in patients with mitral valve stenosis (parasternal long-axis: r = - 0. 816, P = 0.000; apical four chamber: r = - 0. 825, P = 0. 000). Conclusions VFM can really reflect the flow field uniformity of normal cases and patients with mitral stenosis.