Radiobiology > In Utero Exposure > Case Scenario
Case Scenario and Question – Appendicitis
Question: A woman at 14 weeks gestation has developed right lower quadrant tenderness in the last 12 hours. Abdominal ultrasound and MRI are inconclusive. In this context, which is FALSE:
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A. Multi-detector CT (MDCT) for
appendicitis may expose the fetus to 20 to 40 mGy,
approximately 6 times higher than a renal stone protocol with MDCT.
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B. The safety of both iodinated IV
contrast and gadolinium in pregnancy is unproven.
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C. MDCT for appendicitis is below the
threshold for increased cancer risk
D. Ultrasound of appendix is difficult in first trimester and nearly impossible by the third trimester.
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