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DOI: 10.1148/rg.274065149
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Radiation Exposure and Pregnancy: When Should We Be Concerned?1

Cynthia H. McCollough, PhD, Beth A. Schueler, PhD, Thomas D. Atwell, MD, Natalie N. Braun, BS, Dawn M. Regner, MD, Douglas L. Brown, MD, and Andrew J. LeRoy, MD

1 From the Department of Radiology, Mayo Clinic College of Medicine, 200 First St SW, Rochester, MN 55905. Recipient of a Certificate of Merit award for an education exhibit at the 2004 RSNA Annual Meeting. Received August 11, 2006; revision requested September 5 and received February 13, 2007; accepted February 13. C.H.M. received partial support from Siemens Medical Solutions for research not related to this article; all remaining authors have no financial relationships to disclose.

Figure 1
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  		Figure 1.  Axial CT image from a renal stone study in a pregnant woman shows a stone in a middle segment of the right ureter (arrow).

 

Figure 2
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  		Figure 2.  One of four abdominopelvic radiographs from limited IVP. Note that the requisite anatomic coverage results in full irradiation of the conceptus.

 

Figure 3
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  		Figure 3.  Graph shows estimated fetal radiation doses from CT and from limited IVP comprising four abdominopelvic views for different patient thicknesses. Values are representative of current technology.

 

Figure 4
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  		Figure 4.  Flow diagram shows the recommended imaging algorithm for urolithiasis evaluations in pregnant women.

 




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