What is the difference between 2D, 3D and 4D ultrasound?
2D ultrasound is the traditional method of using soundwaves to generate a photo of inside the womb. This method produces a black and white thermal image. 3D ultrasound is a more advanced method, still using soundwaves, to capture a much more detailed image of your baby. Distinct features and even facial expressions can usually be captured with this process. 4D ultrasound is the most advanced method which captures moving, detailed video images of your baby in utero.