CT Urography is a sophisticated radiological examination
designed to evaluate the urinary tract (kidneys, ureters
and bladder) using computed tomography (CT). It has
the added advantage of visualizing all of the other
intra-abdominal and pelvic structures as well.
An CTU is commonly used to detect kidney stones and
find the cause of:
• Pain in the lower back or side
• Blood in the urine (hematuria)
• Frequent urination or difficulty with urination
We ask that you have nothing to eat or drink for four
hours prior to your study when contrast is administered.
You may take essential medications with a small amount
You should wear loose, comfortable clothing like sweats.
In most cases you can wear these in the machine. You
may, however, need to change into a gown.
During the Exam
The exam generally takes between 15 and 45 minutes.
When you are ready to begin, the technologist will help
you into a comfortable position on a sliding table.
Usually you will lie face up and the table will automatically
move into the large donut shaped scanner. While inside
the scanner, you will be able to see your outside surroundings.
The technologist will talk with you from the control
room where they can see you at all times. When you are
ready, the scanner is turned on. The ring rotates around
your body as it sends and picks up x-rays. It is very
important to lie completely still. Periodically, the
technologist may use the intercom to ask you to hold
your breath for short periods of time. This helps to
create better pictures when scanning the abdomen or
chest. Most CT examinations take 30 minutes.
Sometimes a contrast agent, commonly used to enhance
the visibility of certain tissues or blood vessels,
may be required to obtain the clearest image. The agent
is injected through an intravenous line. Contrast agents
are only used when necessary.
The CT scan itself is extremely fast. In fact, it will
probably take you longer to get in the correct position
on the table than it will to conduct the scan. Your
technologist will ask you to hold your breath during
the scanning usually about 18-20 seconds.
After the Exam
Following your exam, your CT scan will be reviewed by
one of our radiologists. Our goal is to provide your
physician with a report within 24 hours of the examination.