When you enter the exam room, you will be asked to lie on the CT table. The technologist will explain the procedure to you and position you on the scanning table. The table will then move to center on the part of your body being examined. You will be able to see out both ends of the scanner, and you will be able to talk to your technologist via a two-way microphone. The table will move within the scanner during the exam. It is normal to hear whirling or clicking noises while the exam is being done.
While the exam is being done, all you need to do is relax and remain as still as possible. You may be asked to hold your breath for short period of time. In multiple times of requirel.
Sometimes you may be asked to give per rectal water / saline that will aid clear visualization of entire lumen following distention.