A CT scanner, or computed tomography scanner, is a medical imaging device that uses X-rays to create detailed cross-sectional images of the body. It combines multiple X-ray images taken from different angles and uses computer processing to produce 3D images. This technology helps doctors diagnose various conditions, including tumors, internal injuries, and diseases. During a CT scan, the patient lies on a table that moves through a large, doughnut-shaped machine. The scanner rotates around the body, capturing images that can be viewed on a computer screen. This non-invasive procedure is quick and provides valuable information for medical assessments.