Suspected small or large foetal size


Low lying placental

Vaginal fluid loss

Vaginal bleeding


Decreased foetal movements

Foetal distress

Previous premature labour

Follow up of previously documented abnormality

Condition of cervix


LIMITATIONS: Foetal position, low liquor volume and large patient size make the scan more challenging.


PREPARATION: Empty your bladder two hours prior to your examination time, then drink 2 glasses (500ml) of water to be finished one hour prior to your appointment.


SCAN PROCEDURE: You may change into a patient gown or adjust your clothing to allow access to the surface of your lower abdomen for scanning. You will lie on a scanning bed during your procedure, which will take 30 minutes - 1 hour.. Ultrasound jelly will be placed on your skin to allow transmission of ultrasound waves from a hand held probe which is moved over your lower abdomen. Occasionally transvaginal imaging may be needed to assess the cervical length. The procedure does not cause any discomfort or pain.


POST PROCEDURE: There are no post procedure precautions.


RESULTS: The images obtained by the sonographer will be analysed and interpreted by the Radiologist.

 Your procedure report will be sent electronically to your referring doctor. Please inform us of when you plan to follow up with your doctor so that your report can be prioritised. A hyperlink will be added to the report that will allow your doctor to access your images.

We provide long term electronic storage of your report and images, so you may obtain a copy either on the day of the scan or in the future.