Third Trimester Fetal Growth Wellbeing Scan
Third Trimester Ultrasound

Sometimes, an ultrasound scan is indicated in the third trimester of pregnancy. These scans are useful for those women who have had previous complications of pregnancy such as pre-eclampsia, stillbirth etc.  They may require a growth scan because of a medical condition in the mother (eg diabetes or hypertension), or if there is a possible clinical problem related to the pregnancy (eg small for dates).    Quite commonly, the placenta is low-lying at the mid-trimester scan and needs to be checked in the third trimester to ensure that it is clear. At this scan, the fetus’ biometric parameters are measured to plot on growth charts, (i.e. the size of the fetal head, abdomen and thigh bone and calculation of an estimate of fetal weight).  Amniotic fluid, umbilical artery blood flow and the placenta are also assessed.  Colour Doppler pictures of the umbilical cord and fetal brain are obtained.  From the pattern of the blood flow in these vessels it is possible to assess if the placenta is working well and that the fetus receives a normal amount of oxygen.  Generally, the Doppler equipment and scanning methods used on the patient are the same equipment as for a general ultrasound test.  Additional time may be required, however, to perform the Doppler part of the examination.  3D/4D scans will also be performed.

34 weeks’ gestation

Coronavirus (COVID-19) Health Alert

The Government of Western Australia has declared a State of Emergency and a Public Health Emergency. As guided by WA Health, all patients and staff are required to wear a mask whilst in the practice, unless exempt. 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