Radiology is the literally the study of images of the human body. The tools of radiology —computerized digital X-ray, computerized axial tomography (CAT) scanners and ultrasound — allow doctors to look inside your body.
Radiologists can take both two- and three-dimensional pictures using state of the art technology tocreate moving pictures of your organs at work and reveal tissue deep within your body. Some tests rely on radioactive substances, others on sound waves or the body's natural magnetism.