A CT scan (Computed Tomography, also called CAT scan) is a medical imaging technology that uses X-rays and computer processing to create detailed cross-sectional images of the body. Unlike regular X-rays that produce flat images, CT scans rotate around the patient, capturing multiple angles that computers combine into detailed 3D views of bones, organs, blood vessels, and soft tissues. This technology helps doctors diagnose cancers, internal injuries, cardiovascular disease, and many other conditions. In Canada, CT scanners are found in hospitals and some diagnostic imaging clinics, with services covered by provincial health insurance when medically necessary. Wait times for CT scans vary by province and urgency of the medical need.