Point source geometry.
H*(10) for whole body (d ≥ 25 cm) |
H'(0.07) for extremities (d < 25 cm).
⚙ Source Parameters
d ≥ 0.25 m → whole body H*(10)
🏗 Shielding
%
No patient attenuation
⌛ Exposure Time
Recommended: include decay for cumulative dose
📊 Results
Note: Estimates for radiation protection using point-source geometry.
Shielding uses the Archer broad-beam method (Monte Carlo, Oumano et al. 2025) for Tc-99m, F-18, I-131 and Lu-177 —
all other nuclides fall back to narrow-beam attenuation.
Geometry, scatter, and source distribution effects are not modelled. Not suitable for dosimetric treatment planning.
Quantity
D'(0) at 1 m
D'(t) at 1 m
D(annual)
Notes
Shielding details
Dose Rate vs Distance (unshielded)
Annual dose limit comparison
Annual limits: workers 20 mSv/y effective, 500 mSv/y extremities, 20 mSv/y lens of eye; public 1 mSv/y
(Royal Decree 1029/2022 / EURATOM Directive 2013/59).
These are regulatory limits, not design targets.