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What is an ultrasound?

An Ultrasound scan utilises sound waves to visualise muscles, tendons and internal organs in real time — capturing their size, structure and any pathology

Ultrasound

During the procedure you will need to lie down on an ultrasound table. Water-based gel will be applied to the examination area, and an ultrasound probe will be pressed firmly against your skin to visualise the underlying organs and structures.

A pelvic ultrasound may require an internal (transvaginal) scan to assist in assessing internal pelvic organs. If this is required, the procedure will be discussed with you and consent will be obtained prior to commencement. You will need to empty your bladder before this procedure, and change into a patient gown. However, you will still need to attend your appointment with a full bladder initially.

Preparation

Ultrasound scans of different body parts, or for different conditions, require different kinds of preparation. Read these guidelines to prepare for your appointment.

  • No food or drink for six hours prior to appointment.
  • Small sips of water to take medication are allowed.
  • Empty your bladder 90 minutes (an hour and a half) before your appointment.
  • Drink 1L (four cups) of water within 30 minutes (half an hour) before your appointment.
  • Do not empty your bladder after this.
  • Empty your bladder 90 minutes (an hour and a half) before your appointment.
  • Drink 500ml (two cups) of water within 30 minutes (half an hour) before your appointment.
  • Do not empty your bladder after this.

No special preparation is required for the following types of ultrasounds:

  • breast
  • musculoskeletal
  • scrotal or testis
  • thyroid or neck
  • vascular