Mid Trimester Anatomy Scan
Mid-trimester Ultrasound

This scan is usually performed at 19 -20 weeks. A “head to toe” scan of the baby is done, and all major structures are assessed. At this stage, the sex of the fetus can usually be determined if requested.  You will not be told the gender if you advise your sonographer that you wish to avoid knowing. 3D and 4D scans of the fetus will also be performed.

The distance of the lower edge of the placenta to the cervix will also be determined at this stage.  If the placenta is low you will need a follow-up examination in the last 3 months of the pregnancy.

We will also measure your cervix (sometimes via an internal scan) as a shortened cervix has been linked to pre-term labour.

Note:  mid-trimester ultrasound is not a recognized screening test for Down Syndrome (see FAQ‘s).

Coronavirus (COVID-19) Health Alert

The Government of Western Australia has declared a State of Emergency for Western Australia. The situation changes often. Please inquire with us about the relevant steps taken to slow the spread.

Please reschedule your appointment, and DO NOT ENTER our facilities, if you:
Have been in contact with someone who has a confirmed case of Coronavirus COVID-19; OR
Have a fever, coughing, sore throat, shortness of breath, or any cold/flu like symptoms.

If you fit this criteria, please check your symptoms using healthdirect's Coronavirus (COVID-19) Symptom Checker. If you are showing respiratory or flu-like symptoms, telephone your doctor or hospital Emergency Department before presenting yourself. If you are experiencing severe symptoms, call '000' and advise the operator you are in self quarantine because of COVID-19 risk.

Western Ultrasound for Women encourages all to download and activate the SafeWA app to improve contact tracing.

Western Ultrasound is committed to the risk mitigation of Coronavirus COVID-19 as one of our priorities for patient safety and quality of care.

Due to the COVID-19 pandemic there may be changes to regular operating hours. We apologise in advance for any inconvenience arising from measures we're taking for the safety of staff and patients.

COVID-19 Health Information Hotline: 1800 020 080 | Department of Health Health Warnings

Updated 27 April 2021