Computed tomography (CT) or Computerized axial tomography (CAT scan) is a diagnostic imaging test used to create detailed images of internal organs, bones, soft tissue and blood vessels. The cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images which can be viewed on a computer monitor, printed on film or transferred to electronic media. CT scanning is often the best method for detecting many different cancers since the images allow your doctor to confirm the presence of a tumor and determine its size and location. It is a fast, painless, noninvasive and highly accurate test. Preparation Tell your doctor if there is a possibility that you are pregnant. Some allergic reaction to contrast medium can happen, like nausea, vomiting, irritation but that is treatable immediately. Avoid metal zips, studs, etc. A mild sedative may be required for those who may be particularly tense or anxious or even claustrophobic in the scanner room alone.
Do not eat or drink anything except water at least 9 to 12 hours before the test.Inform the technician if there is a chance that you may be pregnant before the test.Avoid carrying metallic items or wearing clothes with metal zips, studs, etc.Please get a blood urea and creatinine test done before the test to ensure safety of contrast.