What is a CT scan?

A CT scan uses advanced x-ray technology and computer software to create detailed cross-sectional images of your body, aiding in the diagnosis of various medical conditions.

 

Understanding your CT scan

Doctors may request a CT scan for various reasons, such as examining abdominal organs (liver, kidneys, spleen, bowel), pelvic and chest organs, brain structures, blood vessels, bones and joints, and other tissues.

 

Before your CT scan

  • CT scans do not usually require any preparation, however our expert booking specialists will let you know before the day of your scan if you will need any special preparations.
  • If you do require preparation, you may be asked to:
    • Arrive early and drink a special liquid that helps radiologists interpret your images. NOTE: Sometimes, you will be asked to drink this liquid at home before your appointment.
    • Have a blood test to check your kidney function, drink extra water, avoid certain medications, or fast.

 

On the day of your CT scan:

  • When you arrive, please check in with reception. We’ll make sure your details are correct and ask you to complete any appropriate consent forms.
  • You may need to change into a gown and remove jewellery.
  • The Medical Imaging Technologists will explain the procedure and answer any questions.
  • You can bring a support person if needed.

 

During your CT scan:

  • You will lie on a cushioned table that moves through the scanner, which resembles a giant donut.
  • The process is quick and painless, but you need to stay still and may be asked to hold your breath briefly.
  • The scan usually takes only a few minutes.
  • Sometimes an injection of contrast media is needed to visualise specific areas. If you do need an injection, we will go through the consent form with you first. The contrast media will be injected into your arm and it may make you feel slightly warm and notice a mild metallic taste in your mouth – this is completely normal.

 

After Your CT scan:

Images are interpreted by our expert radiologists and sent to your doctor. In urgent cases, results are available sooner. Your doctor will discuss the important findings and next steps with you.

Frequently asked questions

CT scans use low-dose x-rays, and are very safe. If you are pregnant or have kidney problems, please let us know before your appointment. Contrast agents are generally safe, and allergic reactions are rare.

The scanner’s large opening and short length, means you won’t feel enclosed, and you can talk to the operator at any time. If you feel uncomfortable, let the staff know.

CT scans use slightly more radiation than x-rays, however the increase is not enough to create additional risk for an unborn child unless we are imaging the pelvis or abdominal areas. If you require an abdominal CT during pregnancy the risks will be discussed with you beforehand.

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