"CT" or "CAT" scan are common terms
used to describe a radiographic test known as
"computerized tomography". The CT scanner is a
circular-shaped machine that takes pictures of cross-sections
of the body, referred to as "slices".
A CT can see inside the brain and other parts of the
body areas that cannot be seen with x-rays. This makes it
possible to diagnose certain diseases earlier and more
accurately.
Preparing
for a CT exam
Most CT scans require contrast. CT scans of the head
and chest require you to have nothing to eat or drink for 2
hours prior to the test. CT scans of the abdomen and pelvis
require you to drink barium. One bottle is taken the night
before the exam, another the day of the exam.
Exam Day:
Please arrive 10--15 minutes early to complete the
registration process.
CT scans of the head (brain) require removal of jewelry,
hairpins, etc.
CT scans of the chest, abdomen, and pelvis require
changing into a patient gown.
You may be asked to sign a consent form if I.V. contrast
(x-ray dye) is to be used. I.V. contrast is injected into the
bloodstream through a small needle in the arm or hand. It is
used to "highlight" the vessels and organs of the
abdomen (which aid in diagnosis). You may also have blood
drawn in the laboratory prior to an exam that uses I.V.
contrast to check for adequate renal (kidney) function.
Preparing
for a CT exam