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Auckland Obstetric Centre

Private Service, Obstetrics and Gynaecology, Maternity, Paediatrics

Obstetric Ultrasound

Obstetric ultrasound refers to the specialised use of this technique to produce a picture of your unborn baby while it is inside your uterus (womb). The sound waves are emitted from a hand-held nozzle, which is placed on your stomach, and reflection of these sound waves is displayed as a picture of the moving foetus (unborn baby) on a monitor screen. No x-rays are involved in ultrasound imaging.
 
You will be offered an ultrasound scan between 11-14 weeks to measure Nuchal Translucency to detect your baby's risk for Down syndrome. 
 
At about 18 weeks, you will be offered a detailed ultrasound scan that is able to detect some birth defects, such as spina bifida.  If you decide to have amniocentesis, or your dates are uncertain, an earlier scan may be required to predict your expected date of delivery.  We do not carry out detailed scans at AOC; we make an appointment for you at a private radiology clinic. 
 
Measurements of the image of the foetus help in the assessment of its size and growth as well as confirming the due date of delivery.

This page was last updated at 1:38PM on September 10, 2021.