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 our medical receptionists about the relevant steps taken to slow the spread.

The following guidelines provided from St John of God Hospital apply within our clinics:

    • All patients and visitors are to wear masks, unless an exemption applies.
    • All patients and visitors to scan our business SafeWA QR code on entry to our sites.
    • Patients are to be advised that family/friends are not to attend appointments with them (the only exceptions being if they are a parent/guardian of a minor, if the patient requires a carer, or they are the partner of an obstetric patient.)
    • We can confirm vaccination status of our employees and contractors meet WA Health regulations.
    • Telehealth services are being used wherever possible.
    • Physical distancing and hand hygiene are to be practiced at all times.

Please attempt to confirm your appointment before coming.

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

Updated 16 Feb 2022