Skip to Main Content

CT Scans at the Avera Marshall Imaging Center

Before your Test

  • Be sure to mention to your doctor if you are taking any medication to make sure that it is okay to take them before the test
  • Carefully follow the preparation instructions given to you
  • If your test requires oral contrast (a liquid that helps to improve the images), drink half of the bottle 1 ½ hours before your test and the other half 45 minutes before.
  • Wear comfortable, loose-fitting clothing with no metal snaps, buttons or zippers for your exam. You may be asked to change into a hospital gown for the procedure.
  • Arrive 10 minutes early to check in at the Business Office.
  • Plan on being in the Imaging department 45 minutes.

Tell your Technologist if

  • You are PREGNANT or think you may be pregnant
  • You have allergies (i.e. iodine), asthma, or heart disease
  • You have kidney problems or kidney disease
  • You have had a previous reaction to IV contrast
  • You are diabetic and taking diabetes medication

During the Test

  • You will lay down on a comfortable table that moves during the scan.
  • If appropriate for your test, an IV will be started and IV contrast will be used.
  • The table will be positioned for the scan.
  • You will need to hold as still as possible during the scan.
  • You may be asked to hold your breath for a few seconds during your scan.
  • While scanning, the table will slowly move in and out of the scanner.
  • The scan itself takes 20-45 seconds.

After the Test

  • You may go about your normal diet and activities right away.
  • Drink extra water throughout the day if IV contrast was used.
  • All contrast that you were given will naturally pass through your body within a day.
  • After your scan is read by a radiologist, the results are sent to your doctor. You will need to meet with your doctor or have your doctor call you and discuss the results.

Oral Contrast 

Oral contrast is a liquid that you may have to drink 1 ½ hours and 45 minutes before your test. There are different flavors for you to choose from.

IV Contrast

IV contrast is a clear medication that may be injected through an intravenous line. IV contrast is used to enhance the organs and blood vessels within your body during the scan, providing more information for the radiologist. IV contrast may make you feel warm or have a metallic taste in the back of your throat for a short period of time.

Additional Information

For more information, contact the Avera Marshall Imaging Center at 1-877-537-9189.