With the advancement of computer technology, 3-dimensional (3D) ultrasound imaging is now available. The scan requires special probes and software to accumulate and render the images, and the rendering time has been reduced from minutes to seconds. A good 3D image is often quite impressive and further 2-dimensional (2D) scans may be extracted from 3D blocks of scanned information. Volumetric measurements are more accurate and both doctors and patients can better appreciate the presence or absence of certain abnormality on 3D scan than traditional 2D images.

Fetus	Face
Face	Foot

In obstetric imaging, 3D scan has the possibility of increasing psychological bonding between the parents and the baby. A large volume of literature and documentation is expected to come out in the coming years and the diagnosis of congenital anomalies could receive revived attention. Present evidence has already suggested that even small defects in spine, lips, fingers, feet and ears may be more easily demonstrated, leading to more effective diagnosis of chromosomal abnormalities. The study of fetal heart malformation is also receiving attention. It's greatest potential is still in research and particularly in the study of fetal malformations.