To evaluate the value of precordial four - dimensional echocardiography (dynamic three - dimensional echocardiography, 3d) in diagnosis of cardiovascular diseases.
目的评价经胸四维超声心动图(动态三维超声心动图，3d)对心血管疾病的诊断价值。
2
It is feasible to estimate fetal ventricular volume and function by using 3dechocardiography.
使用三维超声技术评价胎儿心室容量及功能是可行的。
3
The 3dechocardiography ultrasound assessment is more intuitionistic than the 2d one in the domain of diagnosis and treatment of children's congenital heart diseases.