CT (Computed Tomography)
What is computed tomography?
Computed Tomography (CT) is a sophisticated imaging system that uses a combination of X-rays and computer technology to produce detailed images of any part of the body. During a CT scan, an X-ray beam moves in a circle around a patient, allowing many different views of the body part being examined. A computer then processes the X-ray images to generate cross-sectional pictures (or "slices") of the body part. CT scans are much more detailed than regular X-rays and can detect many conditions that do not show up on other imaging tests.
What should I expect?
How long will it take?
How do I prepare?
Locations
What will happen during my CT scan?
Before your scan, you will be asked to remove any objects on your person that will interfere with the x-rays, including jewellery, eyeglasses, dentures, hearing aids and clothing with metal fixtures. Some patients may be required to change into comfortable scrubs which we provide. You will then be helped onto a table that slides into a doughnut-shaped ring in the centre of the scanning machine. The table will move slowly into the ring. The technologist will step into another room, where the scanning controls are located. However, he or she will remain in your line of sight during the entire scan and will be able to hear and speak to you at all times.
As the scanner begins to rotate, low dosage x-rays will pass through your body for short amounts of time. Throughout the procedure, you will be instructed to lie as still as possible, as motion can distort the x-ray images.
Depending on the type of scan you need, a contrast material may be administered in order to enhance images of tissues and organs. If a contrast material must be used, it will be given intravenously when you arrive for your scan, or orally several hours before your scan.
How long will the CT scan take?
The length of the procedure will depend on the type of CT scan you are undergoing. Scans can last anywhere from 5 minutes to 30 minutes. Once the CT scan is complete, a radiologist will interpret the computer-processed information and forward the results to your physician.
How do I prepare for a CT scan?
Some CT scans require a contrast agent or other special forms of preparation. Our Patient Care Coordinator would be pleased to provide you with these specific instructions when you book your exam.
