Sound waves used to create images of a baby in a pregnant mom, without ionizing radiation and without harmful effects.
How does a 3D ultrasound work?
Ultrasound (2D): sends and receives ultrasound waves in just one plane.
Ultrasound (3D): shows the images in three dimensions and may nonetheless provide more information about a known abnormality because these scans can show more detail from different angles, they can help in the diagnosis of cleft lip.
Ultrasound (4D): creates a live-video effect of the images. 4D scans allow you to see your baby smile, yawn, move their arms and legs. It is basically a 3D ultrasound in live motion.
Best time for 3D & 4D Ultrasounds is 24-28 weeks.
3D image of a twin pregnancy at 10+ weeks