Radiation dose management: Part 2, estimating fetal radiation risk from CT during pregnancy

Shlomit A. Goldberg-Stein, Bob Liu, Peter F. Hahn, Susanna I. Lee

Research output: Contribution to journalReview article

27 Scopus citations

Abstract

OBJECTIVE. The purpose of this article is to review fetal radiation doses and associated risks resulting from CT performed during pregnancy. The scanning parameters that influence dose and the techniques for estimating and reducing dose are explained. CONCLUSION. Fetal radiation doses for CT examinations in which the fetus is not directly imaged-for example, head or chest CT - are minimal and need not figure in the riskbenefit analysis to perform the examination. In contrast, radiation dose should be considered with abdominopelvic CT because the fetus is likely to be exposed directly to the scanning beam. Safe implementation of CT in this setting requires an understanding of the factors influencing radiation dose. With this knowledge, when a risk-benefit analysis in a given clinical situation favors imaging using CT, the radiologist need not withhold or delay the examination and can achieve diagnostic-quality images while reducing radiation exposure.

Original languageEnglish (US)
Pages (from-to)W352-W356
JournalAmerican Journal of Roentgenology
Volume198
Issue number4
DOIs
StatePublished - Apr 1 2012
Externally publishedYes

Keywords

  • ALARA
  • CT
  • Dose
  • Dose estimation
  • Fetus
  • Pregnancy
  • Radiation

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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