CT (Computed Tomography)
What is a CT?
A CT (Computed Tomography) scanner is an imaging tool that uses computer processing and conventional X-rays in a small beam to produce detailed cross-sectional images of the body, including three-dimensional pictures. Unlike standard X-rays, CT demonstrates bone and soft tissue anatomy. For optimal visualisation, contrast can also be injected to enhance specific structures, such as blood vessels and organs.
What do I need before the scan?
You need a referral letter from your doctor to be able to make a booking for the scan. If you have medical aid, our personnel will obtain an authorisation number from your medical aid.
When you make the appointment for your scan, you will be advised whether you require any specific preparation, which will be explained to you.
As a general guide, you will be advised not to eat anything two hours before your appointment if you are required to have a contrast media injection. Contrast is a colourless fluid injected during your scan to improve the definition of the images.
All patients will be asked to present 10 minutes before their appointment to complete all the necessary paperwork.
What to expect during the procedure?
Depending on your scan type, your appointment may take up to 30 minutes to complete.
The radiographer will guide you through the whole process and gain your consent for possible contrast media. For some examinations, you may be asked to change into a gown and to remove metallic objects such as jewellery and hearing aids.
The CT radiographer, trained in X-ray equipment and scanning, will position you on the bed and take care of you throughout the examination. The radiographer will need to leave the room during the examination but will remain in contact with you via an intercom and viewing window.
It is important to keep still during the examination and follow the breathing instructions provided via the speaker.
If you need the contrast media for your scan, a small cannula will be inserted into the vein on your arm for the injection. During the infusion, you might experience a brief sensation of warmth throughout your body and a metallic taste in your mouth. These sensations are expected and not cause for concern.
What happens after the procedure?
After the examination, you may resume normal daily activities. You will receive a copy of your images, and a detailed report will be sent to your referring doctor, who will discuss it with you.