The 4th dimension in 4D scanning is time, or motion. 4D ultrasound is moving 3D images. 3D ultrasound technology is useful for assessing foetal abnormalities such as cleft lip or club feet.
The best time for obtaining optimum images of the baby is around 26-30 weeks, as this is the time where the baby has some subcutaneous fat, is still relatively high in the uterus and there is plenty of amniotic fluid surrounding it. The clarity of the images will depend on the position of the foetus and the placenta and the volume of fluid around the foetus.
3D and 4D has many other clinical applications beyond obstetric ultrasound, and may be used to assess anatomical structures and refine the diagnosis of many medical conditions.
To have a 3D/4D ultrasound to visualise your baby, you must be 26-34 weeks pregnant, and you must have had a full anatomy scan at 18-20 weeks. A referral is not necessary, bookings are essential. The cost is $245.00 for a 30 minute appointment and you will receive a 3D framed image and your images on a USB stick to take away with you.
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