A motorized table slides you into a large circular machine. An X-ray emitter and detectors rotate rapidly around your body, taking hundreds of cross-sectional "slice" pictures from different angles.Best used for: Examining bone fractures, tumors, internal bleeding, and organ damage.Learn more: Official breakdown from the Cleveland Clinic CT Scan Guide.2. Magnetic Resonance Imaging (MRI)How it works: Instead of radiation, an MRI uses powerful magnets and radio waves. The magnetic field temporarily aligns the water molecules in your body, and the machine measures how they behave when a radio pulse is turned off, mapping out soft tissues.15