One of the most rewarding moments for expectant parents is when they get to see their child for the first time on ultrasound. Many people choose to do this before the routine examination in the public sector. It is not always easy to know what is what when ordering an ultrasound. Here we explain what ultrasound is, and the difference between 2D, 3D and 5D ultrasound. In a future post, we will write more about what you can see in the different weeks of pregnancy.
What is the difference between 2D, 3D, 4D and 5D ultrasound?
2D ultrasound is the most “known” ultrasound. These images provide “flat” images. This is the type of ultrasound you usually take until week 24. After week 24, it may also be relevant with 3D ultrasound for those who want it. All medical measurements are made in 2D regardless of the week of pregnancy. In 2D you see the skeletal structure that makes internal organs visible.
3D ultrasound is the more classic cozy pictures expectant parents want. The pictures are three-dimensional and can show the baby’s facial features and body shapes. The nicest pictures are around week 26-27. This is because the baby has gained a little more subcutaneous fat, and looks a little rounder and fuller.
4D ultrasound is several 3D images in a row, in other words a video! 3D in video can capture the baby’s movements in the form of e.g. facial expressions, smiling, yawning or kicking. It becomes like a small window into the little one’s belly in real time.
There is also 5D ultrasound. These are HD images, also known as HD live. There is no noticeable difference for the untrained eye. 5D images are similar to 3D images, but the baby’s skin appears in a more pinkish tone.