Summary of Results for Fetal Radiation Dose
| Dose to fetus (mGy/MBq) | Total dose to fetus (mGy) | |||
| Patient no. | 2-h voids | Irregular voiding | 2-h voids | Irregular voiding |
| 1 | 1.95E−02 | 1.55E−02 | 1.14E+01 | 9.04E+00 |
| 2 | 1.03E−02 | 7.16E−03 | 2.06E+00 | 1.43E+00 |
| 3 | 7.41E−03 | 6.23E−03 | 2.49E+00 | 2.10E+00 |
| 4 | 6.93E−03 | 5.79E−03 | 1.21E+00 | 1.01E+00 |
| 5 | 1.17E−02 | 1.06E−02 | 2.68E+00 | 2.43E+00 |
| 6 | 7.27E−03 | 6.08E−03 | 1.32E+00 | 1.10E+00 |
This dose is from administered radiopharmaceutical alone. Fetal radiation dose from transmission scanning with 68Ge rod source is negligible, and hence values in this table represent effective fetal radiation dose for 18F-FDG PET–only scans. However, because most PET scanners are now PET/CT scanners and may not have option to be operated in PET-only mode, total fetal radiation exposure from 18F-FDG PET/CT would be additional 6–14 mGy from CT portion of study (this radiation dose depends on CT protocol used during PET/CT study).