Methods Mitral annular motion in 33 cases of normal subjects form apical four-chamber view and two-chamber view were detected with DTI-M mode.

方法通过DTI - M型模式检测33例健康人心尖四腔观和二腔观二尖瓣环后瓣叶外侧缘的运动。

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Methods Mitral annular motion in 35 cases of normal subjects form apicial four chamber view and two chamber view were detected with DTI M mode.

目的应用多普勒组织成像技术（DTI）探查正常人二尖瓣环的运动，以阐明二尖瓣环运动的特征。

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