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 World Health Organization (WHO) declared COVID-19 a worldwide pandemic on 11 March 2020. The Government of Western Australia has declared an end to the COVID-19 Pandemic State of Emergency on 4 Nov 2022. Please inquire with our medical receptionists about the relevant steps taken to manage bookings with COVID-19 still in the community.

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

    • Face masks are not mandated but they should be worn in crowded indoor settings and where physical distancing is not possible; patients are free to wear them at their discretion.
    • We can confirm vaccination status of our employees and contractors meet WA Health regulations.
    • Hand hygiene is to be practiced at all times.
    • Please do not enter the clinic if you are unwell, tested positive for COVID-19 in the last seven days, been in close contact with a COVID-19 positive person in the last seven days, or if you have any symptoms of infectious illness such as: fever, cough, shortness of breath, sore throat, loss of smell or taste, runny nose, diarrhoea, nausea or vomiting.

Please attempt to confirm your appointment before coming.

Healthdirect Hotline: 1800 020 080 | Department of Health Health Warnings

Updated 05 Jan 2023