左区能显示整个左室、左房的大小，二尖瓣的形态与对合情况，二尖瓣脱垂者可见叶瓣游离缘处某一区域向左房脱出。
In left area the contour and size of the left ventricle and left atrium and the shape and coaptation of the mitral valve could be visualized.
观察30例显示血流会聚区（FCR）的偏心性二尖瓣返流患者的返流束形态，发现均为附壁细长束。
The shape of regurgitant jets in 30 patients with eccentric mitral regurgitation showing now convergence region (FCR) was observed.
结果发现：33／52（63％）例生理性二尖瓣返流和87／87（100％）例病理性二尖瓣返流可于二尖瓣左室面显示血流会聚区；
Flow convergence region, which was located in the left ventricular sides of mitral valve, was displayed in 63%(33/52)of physiological MR and 100%(87/87) of pathological MR.
服用麦角洐生物的患者其二尖瓣幕状区的均值显著增加，且和二尖瓣返流的严重程度成线性关系。
The mean mitral tenting area was significantly greater in ergot-treated patients and showed a linear relationship with the severity of mitral regurgitation.
服用麦角洐生物的患者其二尖瓣幕状区的均值显著增加，且和二尖瓣返流的严重程度成线性关系。
The mean mitral tenting area was significantly greater in ergot-treated patients and showed a linear relationship with the severity of mitral regurgitation.
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