Ultrasound has been used for decades and has uses on a large scale (sonar for war ships and submarines) to small scale such as looking for small lumps, bumps, tendon tears etc. An ultrasound image is affected by a number of factors and because 3D and 4D imaging uses ultrasound its image quality is subject to the same limitations and then some!


  • Placental position can greatly affect our ability to get good views of baby’s face, especially if your baby nestles in to the placenta not giving us the chance for a good clear view
  • Amniotic fluid gives us the ability to take our ultrasound images without the other structures touching the face (such as placenta, uterine wall). Every person and pregnancy is different and so is the amount of amniotic fluid, some people have a lot and some people don’t have much. This factor can’t always be predicted but can affect the overall image quality.
  • Mum’s tum. Now we don’t like to mention it as it doesn’t always make a difference, but sometimes a little bit of belly chub can have an effect as the extra distance the sound waves need to travel to get to your baby and then back to the machine can lead to a image that is less clear Our staff at Sound Radiology are experts in overcoming a number of issues affecting our image quality and we are all professional in the manner we perform our ultrasound scans.
  • Later gestation isn’t always a good time to have the scan as your baby is getting bigger and running out of room! It is that little bit of room around baby that enables us to get the clear images. A lot of people think that the ‘bigger the baby is the better the picture quality’ which isn’t always the case.
  • Experienced staff such as the staff at Sound Radiology ensures that we have the years of experience in ensuring we get the best images possible. We don’t mess with your medical scans to diagnose issues and we have the same expectations when it comes to your 3D and 4D baby images as well.