General CT Preparation

CT exams fall into five general categories.

  • CT with contrast
  • CT without contrast
  • CT Colonography
       (Virtual Colonoscopy)
  • Coronary Calcium Scan
  • PET/CT

Why Choose the S. Mark Taper Foundation Imaging Center for a CT exam?

The preparation instructions for each is listed below. 
You can print and fill out the CT Whole Body Screening Questionnaire , if you are having that study, before you arrive to speed the registration process.

CT with Oral and/or IV Contrast

  • Do not eat 3 hours before your exam.
  • Taking medication as prescribed with a small amount of water.
  • After your scan, drink plenty of clear fluids, unless on restricted fluids.

CT without Contrast

  • No preparations required. (Approximate visit time: 1 hour)

CT Colonography

Coronary Calcium Scan


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