What are the limits for ionizing radiation in the diagnosis of urinary tract infection (UTI) during pregnancy?

Updated: Oct 08, 2019
  • Author: Raisa O Platte, MD, PhD; Chief Editor: Edward David Kim, MD, FACS  more...
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Answer

The total dosage of ionizing radiation should not exceed 3-5 cGy during the course of pregnancy. Of particular concern is radiation delivered during the first trimester, during organogenesis (especially days 11-56). A limited IVP can deliver 0.4-1 cGy. Radiation doses greater than 5 cGy have been associated with an increased likelihood of benign and malignant tumors in the child after birth. No patient should receive more than 10-14 cGy.


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