CT Scan Information

This leaflet is designed to give you some information about having a CT scan, to help you prepare for your examination and to give you some idea of what to expect when you attend.

CT stands for Computerised Tomography and is a special type of x-ray that can look at various parts of the body including the brain, spine, chest, abdomen and pelvis. The information from the x-rays is recorded in a series of cross sectional pictures or scans that can be built up into a three dimensional image of the area being examined.

The person who carries out the scan is called a Radiographer/Clinical Technologist (a health professional trained to perform imaging procedures). They will explain the procedure to you and show you how to position yourself on the scanner table.

You can eat and drink normally, unless specifically told otherwise in your appointment letter. We do not advise eating a large meal before your scan. Please read your appointment letter carefully.

• Wear clothing without metal zip fastenings or clips if possible.
• Leave personal valuables at home.
• Continue to take any medication prescribed by your doctor.
• Bring your medications, including inhalers, with you.
• Please attend on your own if possible.

Preparation is the same, but if you take metformin (Glucophage, Avandamet), please note: If you have problems with kidney function, you may be asked to stop taking metformin for 48 hours after the scan. Staff will advise you during your visit. You can take all other diabetic medications as normal.

Depending on the scan and the severity of kidney problems, preparation may change. Please contact the appointments helpline to speak with a member of staff for advice.

CT scanning should be avoided during pregnancy whenever possible. If you think you may be pregnant, you must tell staff before your scan. Patients of childbearing capacity (ages 11-55) will be asked the date of their last menstrual period to ensure it is safe to proceed.

You will be moved into the scanner (a large doughnut shape) and asked to keep as still as possible. The scanner makes a noise similar to a washing machine. A colourless contrast injection is often given into a vein in your arm to help show up blood vessels and organs. Staff can communicate with you via an intercom throughout the scan.

The scan typically takes 30-45 minutes. If given a contrast injection, you may experience a warm sensation throughout your body and a feeling similar to passing water; these sensations usually pass within 30 seconds.

Results are not available immediately as images must be studied by a radiologist. A report will be sent to your consultant or GP. You are safe to drive home after the procedure.

The scan helps in making a correct diagnosis for proper treatment. While CT uses radiation, modern equipment keeps the dose as low as possible. The benefit of the diagnostic information generally outweighs the small radiation risk. Contrast media are safe, but rare side effects include allergic sensitivity or kidney damage.

If you cannot attend or have questions, please call the Nuclear Medicine Department at 0191 282 4038 (Monday to Friday, 8.30am-5.00pm).

Address: Level 2 Leazes Wing, Royal Victoria Infirmary, Queen Victoria Road, Newcastle Upon Tyne, NE1 4LP.