CT

What is a CT scan?

A CT scan, or computed tomography scan, is a medical imaging procedure that uses X-rays and computer processing to create detailed cross-sectional images of the body. These “slices” can be used to visualize bones, blood vessels, and soft tissues, providing more detail than traditional X-rays. CT scans are used to diagnose a wide range of conditions, including cancer, injuries, and other diseases.

How does a CT scan work?

A CT scanner uses an X-ray beam that rotates around the body. The X-rays that pass through the body are detected by sensors, and a computer then uses this data to create cross-sectional images. CT scans can show detailed images of bones, blood vessels, soft tissues, and organs. They can be used to visualize nearly any part of the body. CT scans are used to diagnose a variety of conditions, including:

• Cancer: Detecting tumors, determining their size and location, and assessing how far they have spread.
• Injuries: Identifying fractures, internal bleeding, and other injuries.
• Diseases: Diagnosing conditions like pulmonary embolisms, appendicitis, and infections.
• Guiding procedures: CT scans can be used to guide biopsies and other procedures.

What to expect during your CT scan

A CT scan is a painless, relatively quick, and non-invasive imaging procedure that uses X-rays and computer technology to create detailed cross-sectional images of the body. They can take anywhere from a few short minutes to about 30 mins, depending on the patient.

Our diagnostic imaging team goes above and beyond to ensure patients are safe and comfortable throughout the entire procedure. A few hours before your CT scan, you shouldn’t eat or drink. At the time of your procedure, you will change into a patient gown in order to ensure your clothing doesn’t interfere with the test. Metal objects (jewelry, belts, hair pins, etc) cannot be worn, as they interfere with the X-rays used during the CT scan. Depending on your individual needs, you may be asked to ingest (either orally or intravenously) a coloured dye to help clarify your resulting images and make them easier to assess. Your technologist will review all of this with you before getting started. You’ll also complete a questionnaire that will notify our team of any implants or health conditions you may have, further ensuring your safety during the procedure.

During your CT scan, you will enter (either lying down, standing or sitting—depending on which machine used and your individual needs) the CT scanner. You will need to remain still during the scan, which can take anywhere from 20 to 90 minutes. A technologist will be with you the whole time, and you can communicate freely with them whenever you need to, including the use of a call button in case of emergency.

Important information for diagnostic imaging patients

Schroeder Ambulatory Centre is not currently accepting patients for CT. We expect to begin offering these services by early 2026.

A physician referral will be required to book an appointment for medical imaging. If you don’t have a family doctor, you can request an appointment at our primary care clinic. Referrals can also be obtained from one of our onsite specialized clinics.

Prior to any imaging, patients can expect to have appropriate screening to ensure the most appropriate test is being performed and that there are no contraindications to the planned examination. For CT and MRI examinations metallic jewelry and hair pins should not be worn.