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Table 2 Estimated fetal doses of radiation associated with maternal radiological procedures

From: Management of ureteric stone in pregnancy: a review

Imaging study Radiation dose (mGy)
USG 0
MRU 0
X-ray KUB 1.4–4.2
IVU (3 film) 1.7–10
CT (conventional) 8–49
CT (low dose) ≤ 7
MAG3 or DTPA 0.2–4
  1. USG ultrasonography, MRU magnetic resonance urography, X-ray KUB X-ray of the kidneys, ureters and bladder, IVU intravenous urogram, CT computed tomography, DTPA diethylene triamine pentaacetic acid, MAG3 mercaptoacetyltriglycine 3