Pulmonary
- Critical Care Associates
of East Texas
Jeffrey M.
Shea, M.D., F.C.C.P.
Catherine M. Martinez, M.D.
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Jeffrey M.
Shea, M.D., F.C.C.P. |
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About
Our Practice
Patient
Information
Critical Care
Procedure Photos
Advanced Directives
BET
Program
What's New
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What is a CT Scan?
A CT
scan is a term used to describe a radiological test known as computerized
tomography. The CT scanner is a
doughnut-shaped machine that takes pictures of your body.
The scanner is used in combination with a digital computer to create
detailed cross sectional images or “slices” of different organs of the body.
CT has the ability to image a combination of soft tissue, bone, and blood
vessels, making it possible to detect diseases earlier than with a regular
x-ray. What’s
involved in the procedure? The patient will lie down on the CT table. The patient needs to get comfortable since it is very important that there is no movement during the test. Once the patient is positioned, the technologist will leave the room. The technologist will ask the patient to hold their breath for a few seconds, sometimes up to 30 seconds, while they gather the CT data set. The patient and the technologist will be able to communicate through an intercom during the test. The CT table will move very slowly through the CT scanner. There may be some noise as the CT scanner rotates. Depending on the type of exam you are receiving, the actual procedure lasts between ten to forty-five minutes. What do I need to do prior to the procedure?
On
the day of your procedure, do not eat any solid food four hours prior to your
appointment to avoid stomach distress. However,
you may have clear liquids in moderate amounts.
Some CT examinations may require an oral intake or an injection into a
vein of a contrast agent, a liquid that enhances the images of the organs and/or
blood vessels. This contrast
contains iodine, so it is important for the patient to inform their nurse or
radiologist if they are allergic to iodine. |
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