CT scans are an outpatient procedure that takes no effort on your part and is completed within a few minutes. You'll need to change into a light gown and lay down on a table, similar to an MRI. CT scans are generally more generous when it comes to movement, but you'll still be required to stay mostly still while the images are taken.
The table will slide you into the machine, while the radiologist communicates with you from another room. You may be asked to do simple tasks such as hold your breath while certain images are taken. The only cause you may have for concern is if you are someone who struggles with claustrophobia. Your radiologist can work with you to help you remain calm for the duration.
In some cases, you may also be asked to take in a contrast material to help illuminate certain organs and blood vessels on the images. This dye can be taken in orally, by injection, or as an enema.