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| Computerized Tomography |
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What is a CT Scan?
CT stands for computerized tomography, which refers to the way this exam is performed. In actuality, a CT scan is an x-ray procedure enhanced by a computer. This results in a three-dimensional view (referred to as a "slice") of a particular part of your body.
During a routine x-ray, dense tissues can block other areas. Aided by the computer, a CT scan is able to put together the different "slices" and create a three-dimensional view, clearly showing both bone and soft tissue.
What Will the Exam Be Like?
 You will meet your CT technologist whose primary concern is your care and well-being. This technologist has completed a rigorous course of education and training, and works under close supervision of the radiologist to assure the most accurate results from your examination.
Before he starts your CT exam, the technologist will explain the procedure to you. He wants to solicit your cooperation, but more importantly, he wants to put your mind at ease as to what is about to take place.
A contrast medium may be required. This is usually given by mouth or injection. It is normal to feel a warm sensation as the dye makes its way through your body. This substance is given to highlight various body parts and is eliminated in a day or two.
Next, you will be positioned gently and secured on the scan table. It is important that you be secured, because even the slightest movement during the split seconds of imaging can blur the picture and result in the need for repeated scans.
Then, you will be moved into the scanner, which is a small, air-conditioned chamber. The technologist will have you in full view at all times and be in constant communication via two-way microphones. During this brief time, you will hear the humming of the equipment as it produces the images. You may also feel slight movement of the table as it prepares for the next scan.
How Long Does the Exam Take?
The exam usually takes from 30 to 60 minutes. This allows for preparation as well as time for the computer to generate the image. Actual exposure time is minimal.
Time may vary significantly depending on the nature of the study and other factors.
How Will I Learn the Results?
The radiologist, a physician specialist, will study the results of your exam and discuss them with your doctor, who will then consult with you.
Things to Remember
Tell your doctor or technologist if you are:
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Pregnant or think you may be. |
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Allergic to iodine or other materials. |
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Undergoing radiation therapy. |
You should also:
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Wear comfortable clothing and avoid wearing jewelry and eye make-up. Metalics may interfere with the accuracy of the film image. |
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Be sure to ask any questions relating to your examination. They will help the evaluation. |
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