Fetal Radiation Dose from ¹⁸F-FDG in Pregnant Patients Imaged with PET, PET/CT, and PET/MR

Abstract

Fetal radiation doses are higher in early pregnancy than in late pregnancy, and there can be considerable intersubject variability. However, the total absorbed dose is always well below the threshold for noncancer health effects throughout pregnancy. PET/MR imaging is the optimal PET procedure for imaging pregnant women because it is not associated with radiation for attenuation correction and allows more accurate dosimetric calculations.