动态三维超声心动图评价主动脉瓣病变

Evaluation of aortic valvular disease by dynamic three dimensional echocardiography

目的评价主动脉瓣病变三维超声心动图的诊断价值。方法采用经胸壁和经食管旋转扫描方式获取二维切面数据，利用容积提取显示法（ＶｏｌｕｍｅＲｅｎｄｅｒｉｎｇＤｉｓｐｌａｙ）对２１例正常人主动脉瓣及２５例不同病变主动脉瓣进行动态三维重建。结果重建图像能从主动脉瓣上或瓣下动态显示正常主动脉瓣三瓣叶的整体立体形态，其收缩期充分开放，舒张期对合良好。对不同病变的主动脉瓣，动态三维图像能清楚显示其立体解剖形态特征。结论同传统的二维超声心动图相比较，动态三维超声心动图对主动脉瓣病变的诊断更为简便。

Objective\ To evaluate aortic valvular disease by dynamic three dimensional echocardiography. Methods\ Dynamic three dimensional echocardiography was reconstructed in 21 normal subjects and 25 patients with different aortic valvular diseases by use of rotational scanning technique to collect two dimensional data and volume rendering display to reconstruct three dimensional images. Results\ The stereoscopic view of normal aortic valve could be visualized above or below aortic valve which opened widely in systole and closed tightly in diastole. Also, the malformative shape of aortic valvular diseases was displayed clearly.Conclusions\ Compared with conventional two dimensional echocardiography, dynamic three dimensional echocardiography is a more easier and accurate examination to diagnose aortic valvular diseases.