TABLE 1

Characteristics of Patients, Fetal Fractions, and Time-Integrated Coefficients

PatientStage of gestationWeight (kg)Imaging methodActivity (MBq)×FractionTime-integrated activity (Bq h/Bq)
15 wk85.8PET/CT2960.00115*0.0030*
212 wk58.1PET/CT3850.000610.0016
3∼3 mo77.1PET3500.001000.0026
419 wk69.9PET/MR2960.003660.0097
519 wk50.8PET/MR3480.002380.0063
67 mo65.8PET2960.019510.0515

  • ↵* In uterus.