Objective To study the value of mitra l orifice plane determination technique (MOPDT) in measurement of mitral valve are a(MVA) through 2-dimensional echocardiography(2DE).

• 目的应用二尖瓣口平面确定技术(mitralorificeplanedeterminationtechnique,MOPDT)对二尖瓣口面积(MVA)进行二维超声(2DE)测量,旨在探讨MOPDT在2DE测量MVA中的作用和价值。