Ultrasound scans including 3D and 4D are more like a real-time photograph of your baby. With 3D scanning, many pictures of the child are taken in 2D and then merged to create a 3D image effect. With 4D scanning, pictures are made in real time and you can see what your child is doing in your womb at the time, such as moving legs and arms or opening of the eyes. Ultrasound scans are an essential tool to examine the health and internal organs of a growing fetus. It helps the gynaecologists to identify any complications. It helps the experts to detect any kind of anomalies such as a cleft lip, underdeveloped limbs helps you keep a track of spinal problems and other congenital disabilities. It also helps in monitoring the amniotic fluid.