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About CT (computed tomography)

This procedure, which is commonly referred to as a CAT scan, uses special x-ray equipment to obtain images of the body from different angles. CT exams provide invaluable anatomic information quickly and accurately, which assists your physician in obtaining the proper diagnosis. Types of exams that are done on a CT machine are:
  • Abdomen 
  • Head
  • Spine 
  • CTA (computed tomography angiography)

What should I expect?

The CT machine looks like a large square doughnut and only covers the area that is being examined. A typical CT exam lasts between 15-30 minutes. Before entering the scanning room you will be asked to remove anything that is metallic. Once the technologist positions you on the table the scan will begin. During the exam you will be in the room alone however, your technologist will be able to see and hear you through out the whole procedure.

Some exams require the injection of IV contrast material. This allows the Radiologist to see your organs and soft tissue with more clarity. This contrast material may cause a warm sensation in your body; it will only last momentarily and will not cause any pain.

Each CT room has pictorial “skylights” above the scanner to help you stay relaxed and comfortable.

How do I prepare for the exam?

Different tests require different preparations. You may be asked to drink an oral contrast agent which may be diluted barium or diluted IV contrast. The oral contrast must be ingested approximately one hour and 30 minutes prior to the time you are scanned. The oral contrast allows the Radiologist to distinguish your normal intestines from abnormalities in the abdomen and pelvis. Other tests may require you to only drink clear liquids 4 hours prior to your exam or have some lab work done. Please check with your physicians office for the appropriate preps for your test or call the radiology department at 791-2460.

How will my physician get the results?

After your CT is completed, a Radiologist will study the exam by looking at the images on a computer using PACS or Picture Archiving & Communication System. The Radiologist will issue a report and a copy of that report will be sent to your physician. Your physician’s office will then contact you with the results. Films of the exam can also be produced and sent to your physician.

If you have further questions please call the radiology department at 791-2460 or contact us at Radiology@lexhealth.org