.svg)
How it works
A computed tomography (CT) scanner uses X-rays to create multi-dimensional images of a specific area which help to diagnose medical conditions. In some cases, contrast media (dye) may be injected to provide further detail. You'll lie on a table which moves inside the scanner to obtain images.
A CT scan can be used to examine most parts of the body, including:
- Internal organs
- Blood vessels
- Bones and joints
What to expect
A CT scan is a relatively low-risk procedure as it is non-invasive.
When you arrive, you may be asked to fill out a form asking questions about your medical history, including any allergies. Depending on the type of CT scan, you may need to change into a gown and have a cannula inserted for an injection of contrast.
It's very important to lie comfortably on the CT table - any movement will make the images less clear. Sometimes you'll need to hold your breath for a brief period (less than 20 seconds).
Day of the scan
- The day before. Drink plenty of fluids so you're well hydrated.
- Arrival. Arrive 15 mins before appointment to fill in paperwork.
- Prior to scan. gown and cannula might be required.
- The CT scan. 15 mins - 1 hour procedure.
- After scan. Final appointment with reception and time to go home.
Frequently asked questions
Will I be sedated for the scan?
No sedation is required for diagnostic CT scans.
Will I need someone to drive me home?
There's usually no need for a driver or assistance following a diagnostic CT scan.
Will I be able to eat a regular meal after the procedure?
After the completion of the CT scan, you'll be able to resume your regular diet and activities unless informed otherwise by your referring doctor.
Should I drink extra fluids after the procedure?
If you had an injection of contrast during your CT scan, it is recommended that you drink more fluids than normal to help flush the contrast out through your kidneys.
If your CT scan study involved a barium sulfate drink, it's recommended that you mildly increase your fluid intake after the exam. This is because barium sulfate is a dense and inert (not chemically reactive) product that remains within the gastrointestinal tract in trace amounts.
Do I need to stop taking my medications?
No, it's usually advised to keep taking all regular medications. Even if you're fasting, you can take your tablets with water. While some CT scans require you to pause your medications, you'll be informed when making your booking.