Patients may be asked to avoid eating or drinking for a few hours before the test and to remove any jewelry or metal objects from their body before the test. They may also be asked to drink a contrast dye before the test, which can help make the images clearer.It is important for patients to follow any instructions given to them by their healthcare provider before the test.The CT pelvis with and without contrast can help diagnose a wide range of conditions affecting the pelvic region, including tumors, inflammation, infections, or injuries. It can also be used to guide biopsies or other procedures.The test is typically requested by a physician or other healthcare provider when there is a suspicion of a problem in the pelvic area that needs further evaluation.