CT scan at times also known as CAT scanning is a noninvasive, unproblematic health test that helps doctors analyze and treat medical disorders. Intermittently in this test you may be instructed to clench your breath, it is recommended to do the same every time. CT scan uses the distinct x-ray machine to generate many images of the internal body and a laptop/computer to link them organized in cross-sectional sights of the part being considered. These images can then be studied on a laptop/computer screen or printed. CT scans of blood vessels, bone, inner organs, and soft tissue deliver better precision than conventional x-ray tests.