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CT and Radiation

Woman with 38 percent less dose pie chart graphicThere has been growing discussion around patient exposure to radiation (also called ‘dose’) during CT imaging. The concern has been the cumulative effect of exposure to radiation over a lifetime and the potential increased risk of developing cancer from this exposure. More information on this topic is available on

Your safety drives our imaging care decisions. Our goal is always to provide the highest quality diagnostic images with the least amount of radiation possible for each patient. In fact, our average CT dose in Puget Sound is over 46% BELOW the national average, according to the latest data from the American College of Radiology’s Dose Index Registry (July-Sept. 2017). 

If your provider recommends a CT scan, make sure to ask about radiation so you can be informed about medical decisions. 

Watch a Video on Low-Dose CT at CDI

Steps We Take to Lower CT Dose and Ensure Patient Safety

  • Specialized radiologists consult with your provider to determine which imaging technology is best for you. 
  • Certified CT technologists carefully position you within the scanner for optimal images of the area of interest.
  • Your unique size and weight are considered when setting up the exam.
  • Real-time radiation dose reduction technology is used to minimize your exposure and maintain maximum image quality.
  • CDI centers and CT scanners are accredited by the American College of Radiology (ACR) which includes annual rigorous quality and safety reviews.
  • We submit the radiation dose of every single CT exam we perform, with other providers, through a nation registry created by the ACR in order to measure and report the quality of our CT services.