Strategies for Reducing Radiation Dose in CT

Cynthia H. McCollough, Andrew N. Primak, Natalie Braun, James Kofler, Lifeng Yu, Jodie Christner

Research output: Contribution to journalReview articlepeer-review

536 Scopus citations


In recent years, the media has focused on the potential danger of radiation exposure from CT, even though the potential benefit of a medically indicated CT far outweighs the potential risks. This attention has reminded the radiology community that doses must be as low as reasonably achievable (ALARA) while maintaining diagnostic image quality. To satisfy the ALARA principle, the dose reduction strategies described in this article must be well understood and properly used. The use of CT must also be justified for the specific diagnostic task.

Original languageEnglish (US)
Pages (from-to)27-40
Number of pages14
JournalRadiologic Clinics of North America
Issue number1
StatePublished - Jan 2009


  • Automatic exposure control
  • CT
  • Cardiac CT
  • Dose reduction
  • Effective dose
  • Radiation dose

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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