A CAT Scan is a test that uses a computer to make an x-ray image or picture of a very thin section of the body. A CT Angiogram is a study of the arteries or veins within the body.


You will lie on the scanner table, which will be moved into the doughnut-like scanner opening. You will enter the scanner feet or head first, depending on the area being scanned. Contrast (x-ray dye) will be injected and images will be taken to record the study.

Procedure time: less than 30 minutes

In/Out Patient Preparation Instructions:

  1. Nothing to eat or drink 2 hours before your exam.
  2. You may take normal medications.

For Your Information:

  1. Any woman who is pregnant, or thinks she might be, should let her doctor know before having the scan.
  2. Please inform the technologist of any known allergies.
  3. Do not bring jewelry or large amounts of money with you.
  4. You may be asked to change into a hospital gown.
  5. You will be asked to sign a consent form for the scan.
  6. Relax and follow the directions given to you by the staff. Please remember to lie still during the test to get a clear picture.
  7. An iodine-containing dye will be injected. If you develop hives, itching, or any other unusual symptoms within 24 hours, please get in touch with either your family doctor, the Radiology Department, or be seen in the Emergency Department. This may be an allergic reaction.
  8. You will be able to leave the x-ray department when the test is finished. Discharge instructions will be given to outpatients.
  9. The Radiologist (x-ray doctor) will “read” the scan and give the results to your doctor. Your doctor will share there the results of this test with you in 2-3 days; feel free to ask your doctor if you have any questions.
  10. If you have any questions regarding this test, please call 419-394-3335 ext. 3550 for assistance.

Grand Lake Health System
200 St. Clair Street, St. Marys,
Ohio 45885-2400
| 1-419-394-3335 | 1-877-564-6897