Test Details & Preparation
An intravenous pyelogram is an image producing test which is performed to have a look at the kidneys and ureters. The ureters are the narrow tubes which carry urine from the kidneys to the bladder.
At the time of intravenous pyelogram, the doctor injects a contrast dye into one of your veins. The doctor uses X-ray images to look at the contrast dye as it moves from the kidney into the ureter and then to the bladder.
Dye that moves too slowly or not at all can mean that you have a blockage in the blood flow through a kidney. It can also mean that the kidney, ureter, or bladder is not working as well as it should.
Intravenous pyelogram is generally one of the first tests ordered when your doctor thinks you can have kidney disease or a urinary tract problem.
X-rays use a small amount of radiation to create pictures of your bones and internal organs. An intravenous pyelogram is one type of X-ray.
Intravenous pyelogram may be done at the same time as a CT scan of the kidneys (urography). The CT scan also uses contrast dye. It makes images that show layers or “slices” of the kidney.