A CT (Computed Tomography) scan ranks as one of the top 5 medical developments in the last 50 years. A CT (or CAT) scan is essentially a medical imaging technique used in the field of radiology to get detailed images of various parts of the body for diagnostic purposes. This allows the radiographer or radiologic technician to “look” inside the body without the need for surgical intervention. A CT scan eliminates overlapping structures, hence making the internal anatomy of the body very clear and apparent. This is primarily achieved by rotating an X ray tube around the patient, so that multiple two-dimensional cross-sectional images can be collected from several angles. This then ends up generating a three-dimensional image of an object inside the body. CT scans enable radiologists and physicians to identify internal structures and see their shape, size, density and texture. This information can be utilised in determining a possible medical problem and also in providing the location and extent of the problem, in order to be able to treat it more effectively. Images may also show the absence of an abnormality.