A "CT" or "CAT" scan is the term used to describe a radiologic
test known as "computerized
tomography." Computed refers to the use of a computer to create the
image. Tomography refers to the fact that the images are of a plane of an area
inside your body, like a single piece of bread from the middle of the loaf.
The CT scanner is a doughnut-shaped machine that takes pictures of cross-sections
of the body, called "slices." An x-ray tube moves in a circular fashion
around the area being scanned. The rays are picked up on a scanner, fed into
a computer and seen on a computer screen.
CT can look inside the brain and other parts of the body, into areas that cannot
be seen on regular x-ray examinations. CT makes it possible to diagnose certain
diseases earlier and more accurately than other imaging tools. Because most
diseases are better treated in the early stages, CT scans can help save lives.
Pre-appointment
Let your technologist know about any of the following:
Diabetic and other medcines you take (you may be required to have a blood
test prior to your scan)
You are or think you may be pregnant or you are breastfeeding
You ate or drank before the exam
Previous reactions to contrast agents
Patient experience
An imaging procedure typically lasts 15 to 45 minutes, depending on the type
of information requested by your physician. For the best quality image, you
need to be as still as possible during the exam. Just relax and breathe normally.
You will lie on a bed that slides into a doughnut-shaped machine.
Your exam will be performed by a registered radiologic technologist. To enhance
the CT image, you may be given a contrast agent through an intravenous (IV)
line or by injection. The technologist is always nearby to assist you.
Patient preparation
You must have with you:
Previous x-rays if requested by your doctor’s office
Complete insurance information including your insurance card
For a head or neck CT:
Do not eat or drink anything two hours before the exam.
For an abdomen, chest or pelvic CT:
Do not eat or drink anything during the two hours before the exam. You may
be asked to drink an oral contrast agent at 1-1/2 hours and then again 45 minutes
before the exam which helps to outline the stomach and intestinal track in the
image.
For a spine CT:
You have no restrictions on eating or drinking, unless instructed otherwise.
Continue to take any medication prescribed by your doctor unless you have been
given other instructions. Make yourself comfortable during the exam. You will
be able to see and hear a technologist throughout the exam.
Post-exam
Your CT images will be interpreted by a board certified radiologist and the
findings will be sent to your physician. Please follow up with your physician
for results.
For general radiology information please call: 763-236-4150.
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A "CT" or "CAT" scan is the term used to describe a radiologic
test known as "
Let your technologist know about any of the following:
