Dating
Dating/Viability Scan

Establishing an estimated due date early on in pregnancy is of vital importance, as this date is then used for the rest of the pregnancy to determine when the baby is likely be born. An ultrasound scan can be used to confirm menstrual dates or to accurately determine how old an embryo is if the last menstrual period is unknown. It is also important in determining the number of embryos, and in the case of twins, to determine what type of twins they are (identical vs non-identical, or monochorionic vs dichorionic). Ultrasound can also determine if a pregnancy is viable, or if there is a problem (for example, a miscarriage or ectopic pregnancy).

i.e. CRL measurment

Crown-rump length (CRL) is the measurment of the length of embryos and fetuses from the top of the head (crown) to the bottom of the buttocks (rump).  After 12 weeks, the accuracy of CRL in predicting gestational age diminishes and is replaced by measurment of the fetal biparietal diameter, head cirumference, abdominal circumference and other femur length.

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