Information is sent to a computer, which produces the image on a computer screen.
A CT scan provides information about bone, muscle and fat. It is also used to assist the physician in locating the exact area for a biopsy. The radio waves and the magnet do not contain radiation. A computer receives and translates the radio waves into detailed images of the area of the body under study. MRI scans provide detailed information about soft tissue, the bone marrow cavity, and bone tumors.