How Does 2D, 3D & 4D Prenatal Ultrasound or Sonogram Work?
An ultrasound is the interpretation of reflected sound waves to form a picture of the fetus. 2D, 3D and 4D are trademarked terminology used in the industry to distinguish the different types of pictures and videos that can be provided. 2D (the traditional ultrasound) works by listening to the reflected sound waves in a single plain, forming a black and white image. 3D (three dimensional) ultrasounds work by a process known as “surface rendering”. In this case, the same sound waves used in 2D are sent at different angles. The reflections then are interpreted through sophisticated software, forming an image of the surface details. A 3D image of the fetus is instantly created with remarkable clarity. 4D (four dimensional) ultrasound is captured in the same manner as 3D ultrasound. Time is being the fourth dimension. Instead of looking at a single still image (3D), you are now able to view live video of many 3D images created one after the other as the fetus is moving. The ultrasound techn
