What is a Computerized Tomography exam?
Computerized Tomography is a diagnostic X-ray procedure that combines older X-ray technology with the new computer technology modern medicine has grown to rely on. This procedure produces a series of cross-sectional images of a selected part of your body or head that will be interpreted by a radiologist specializing in medical diagnosis by X-ray. These images can be manipulated by the CT technologist to enhance areas of the picture that require closer examination.

How do I prepare for my CT scan?
Preparation for a CT exam varies, depending on the part of the body being examined. Your physician will provide specific instructions to fit your particular situation, which may include fasting, special diets or the ingestion of a "contrast agent" which serves to highlight portions of your anatomy. For exams of the brain, head or neck, you will be asked to remove all metal objects such as jewelry, hairpins, or hearing aids as they may degrade the clarity of the images. For all other exams you will be asked to change into a gown, or you can simply wear a comfortable sweat suit as long as it too does not contain metallic objects.

What can I expect during my CT scan?
The exam will be designed by a Radiologist and performed by a licensed, certified technologist. Prior to the start of your exam, the technologist will explain the procedure to you in order to solicit your cooperation and put your mind at ease with what you are going to experience. During the exam, it will be necessary to follow any instructions the technologist provides and to hold as still as possible as movement will cause blurring of the images. You will be able to communicate with the technologist throughout the procedure via intercom. In order for the exam to be performed, you will be positioned on the scan table and moved into the scanner where you will hear humming of the equipment and feel a slight movement of the table as it readies for the next image or "slice."

How long will the CT scan take?
CT scans typically take anywhere from 5 to 30 minutes, depending on the type and/or combination of exams the physician has ordered.

What will happen following my CT scan?
You can resume your regular diet immediately after the scan unless otherwise told by your physician.

Important Considerations
Be sure to inform your physician if you are, or think are, pregnant before proceeding with the CT scan. Additionally, if you've ever had contrast agents before and experienced discomfort or an allergic reaction, again, inform the technologist and your physician.

Learn more at www.radiologyinfo.org