中文摘要：

现在的学习在诊断评估了三维的 echocardigraphy (3DE ) 的申请在伊朗的银币氏族的缺点(ASD ) 和它由 3DE 的尺寸的测量并且把尺寸与外科的调查结果作比较。二维、即时三维的回响心动描记法(RT3DE ) 在 26 个病人被执行与在伊朗的银币，氏族的缺点，和 echocardiographic 数据与外科的调查结果相比。重要关联被 RT3DE 和在外科期间测量了那在缺点直径之间发现(r=0.77， P【0.001 ) 。缺点区域在心脏的周期期间显著地变化了。在缺点尺寸的百分比变化从在心脏的周期期间 6%70% 。我们的学习证明尺寸和形态学在伊朗的银币，氏族的缺点与外科的调查结果与 RT3DE 获得了相互关联很好。因此， RT3DE 是为对的评价的一个可行、精确的非侵略的成像工具在伊朗的银币氏族的尺寸和动态变化。

英文摘要：

The present study evaluated the application of three dimensional echocardigraphy （3DE） in the diagnosis of atrial septal defect （ASD） and the measurement of its size by 3DE and compared the size with surgical findings. Two-dimensional and real-time three dimensional echocardiography （RT3DE） was performed in 26 patients with atrial septal defect, and the echocardiographic data were compared with the surgical findings. Significant correlation was found between defect diameter by RT3DE and that measured during surgery （r=0.77, P〈0.001）. The defect area changed significantly during cardiac cycle. Percentage change in defect size during cardiac cycle ranged from 6%-70%. Our study showed that the size and morphology of atrial septal defect obtained with RT3DE correlate well with surgical findings. Therefore, RT3DE is a feasible and accurate non-invasive imaging tool for assessment of atrial septal size and dynamic changes.