利用彩色多普勒观察主动脉瓣口有无返流。

Pulsed Doppler and color Doppler were used to observe the existence of aortic regurgitation.

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目的观察m -型彩色多普勒超声测定主动脉瓣返流(AR)的血流传播速度(FPV)估测AR程度的可行性及准确性。

Objective To evaluate the feasibility and accuracy of color M-mode Doppler flow propagation velocity (FPV) in assessment of the severity of aortic regurgitation (AR).

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目的：探讨主动脉瓣返流对胸主动脉结构与功能的影响。

Objective:To evaluate the influence of aortic valvular regurgitation(AR) on aortic remodeling.

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