Radiation Dose Comparison Between 18F-Fluoride and 99mTc-MDP
| Patient | Intravenous administered activity | Organ receiving largest radiation dose | Effective dose |
| 18F-fluoride | |||
| Adult | 185–370 MBq (5–10 mCi) | Bladder*: 0.22 mGy/MBq (0.81 rad/mCi) | 0.024 mSv/MBq (0.089 rem/mCi) |
| Child (5 y old) | 2.22 MBq/kg (0.06 mCi/kg) | Bladder*: 0.61 mGy/MBq (2.3 rad/mCi) | 0.086 mSv/MBq (0.32 rem/mCi) |
| 99mTc-MDP | |||
| Adult | 740–1,110 MBq (20–30 mCi) | Bone surfaces: 0.063 mGy/MBq (0.23 rad/mCi) | 0.0057 mSv/MBq (0.021 rem/mCi) |
| Child (5 y old) | 7–11 MBq/kg (0.2–0.3 mCi/kg) | Bone surfaces: 0.22 mGy/MBq (0.81 rad/mCi) | 0.025 mSv/MBq (0.092 rem/mCi) |
↵* Voiding interval, 3.5 h. Changes in bladder wall dose are approximately linear with changes in voiding interval; for voiding interval of 2.0 h, dose to bladder wall would change by factor of 2/3.5.
Data are from the International Commission on Radiological Protection (42,43).