Obstetric nuchal dating scan
Our sonographers are trained to the highest standards to perform these specialist measurements of you and your baby.
They hold Certificates in Competence from the Fetal Medicine Foundation which is recognised by the Royal Australian and New Zealand College of Obstetricians and Gynaecologists.
Ultrasound is usually used to guide these procedures.
This scan should be ideally performed between 12 weeks and 13 weeks 6 days of your pregnancy.
This screening test involves a blood test to measure two hormones, free B-HCG and PAPP-A, as well as an ultrasound scan. It is common medical practice to also offer an ultrasound scan, called the ‘foetal anatomy’ scan, at 18-20 weeks.
This scan looks for the presence of physical abnormalities in the baby.
Your doctor may recommend a further prenatal diagnostic test such as amniocentesis or chorionic villus sampling.
These tests can definitively exclude or confirm the presence of a specific birth defect.
Appropriate use of ultrasound poses no physical risk to you or your baby.
The ability to diagnose physical abnormalities depends on the equipment used, the position of the foetus, the stage of the pregnancy and the experience of the person performing the ultrasound.
If a physical abnormality is identified, it may suggest the presence of a birth defect and/or hereditary condition.
A towel will be tucked into your pants to limit spread of the gel onto your clothes.
Clear gel is applied to your tummy and the sonographer moves the probe over your tummy recording images.