Your first CT scan: what to expect

It is natural to have questions when you are booked for a CT scan, especially if it is your first. Knowing what happens at each stage can make the visit feel more manageable.

CT stands for Computed Tomography. It uses X-rays and a computer to create detailed images of the inside of your body. The scanner is shaped like a large ring, and the examination table moves through its opening. The radiographer will explain the scan and help you into the right position.

Before your scan

Preparation depends on the part of the body being examined and the question your clinician needs answered. Some CT scans need no special preparation. Others may involve instructions about food or drink, a contrast drink, or an injection of contrast through a small tube in a vein.

Please follow the instructions given for your own appointment rather than assuming that every CT scan is the same.

Tell the team before the scan if you might be pregnant, have had a previous reaction to CT contrast, have kidney problems, or have any other concern about the examination.

Bring your referral and any relevant previous imaging reports if you have them.

We will send a link to your scan images and your report by email. Please check that we have your current email address when you attend.

During your scan

You will lie on the table while it moves through the scanner. You may be asked to keep still or hold your breath briefly. The radiographer will be able to see and speak to you from the control area.

The scan itself is usually quick, though preparation and any observation afterwards can make your visit longer.

Afterwards

If you have received contrast, you may be asked to stay briefly for observation. A radiologist will review the images and prepare a report.

We will email you and your referring clinician the report and a link to view images within 24 hours. Your clinician can discuss what the findings mean for you.

If something about your appointment is unclear, please ask us. We would rather answer your questions before the scan than leave you feeling uncertain.