“…Contrast refers to a substance taken by mouth or injected into an intravenous (IV) line that causes the particular organ or tissue under study to be seen more clearly computed tomography is concern about certain types of kidney or bladder problem. Renal computed tomography tests can show size of the kidney, signs of injury to the kidneys, abnormalities present since birth the presence of blockages or kidney stones, complications of a urinary tract infection (UTI) and cysts or tumors [1].…”