Methods Using color Doppler flow imaging to detect the pulmonary blood color and continuous wave Doppler echocardiogram to measure the pulmonary flow velocity.
方法用彩色多普勒超声观察心腔和肺动脉内的血流颜色变化，并用连续多普勒超声测量肺动脉内血流速度。
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Objective To investigate ocular vessel flow velocity in normal persons' eyes by color doppler flow imaging (CDFI).