Obstetric Morphology Ultrasound

Scanning your baby gives you an exciting glimpse of your baby, but it also provides important medical information relating to your baby’s growth, development and helps determine how your pregnancy is progressing.

Ultrasounds in the 2nd trimester usually occur between 18 – 20 weeks and this scan is called a Morphology Scan. A morphology scan is performed to assess your baby for abnormalities and anomalies. Not all variances can be detected by ultrasound.

Your preparation requirements

You will be required to drink around 500ml of water one hour prior to your examination. This allows the bladder to fill and helps to visualize the uterus, baby and other structures of the pelvis. Hence, try not to go to the toilet once you have commenced drinking the water.

What to expect

Our ultrasound rooms are dimly lit to reduce the amount of ‘glare’ on our ultrasound monitors. Your partner is welcome to come into the room with you, but as this is a medical diagnostic ultrasound, we do like to limit the number of people who come into the room. If you wish to have more people present, please ask our booking staff when you ring to make your appointment.

You may be asked to change into a patient gown so that we can easily access your abdomen and asked to lie on our ultrasound bed. A warm gel is applied to you which enables us to send the sound waves through the skin to form the image.

The morphology scan is a detailed assessment of your baby, where we look thoroughly from top to toe to make sure that everything can be seen is present and accounted for, eg. that there are two kidneys, counting fingers and toes or that there is 4 chambers in the heart.  We exclude abnormalities at this scan and take measurements of your baby to confirm your dates and baby’s growth.

Although ultrasound has progressed significantly over the years and we do have the latest in ultrasound technology here, not all anatomical variances can be detected antenatally.

Gender predictions are not always possible or accurate using ultrasound, however, if you wish to know the gender of your child, please ask your Sonographer to take a peek.

If you are having a Morphology ultrasound, please see our checklists below.