VBDM | Functional form | Notes |
---|---|---|
Monte Carlo (MC) | F(M ijk , N ijk , ρ ijk , E 90Y ) | E 90Y is the beta energy spectra per disintegration |
Local deposition (LD) | \( {N}_{ijk}\cdot \frac{E_{avg}}{\rho_{ijk}\cdot \Delta V} \) | E avg (0.937 MeV) is the average energy of the beta particle per disintegration. ΔV is the volume of a voxel. |
Soft-tissue kernel (SK) | N ijk ⊗ K i ' j ' k ' | K i ' j ' k ' is obtained from a MC simulation of infinite uniform soft-tissue material with density of 1.04 g/cc. |
Soft-tissue kernel with density correction (SKD) | \( \left({N}_{ijk}\otimes {K}_{i^{\hbox{'}}{j}^{\hbox{'}}{k}^{\hbox{'}}}\right)\cdot \frac{1.04}{\rho_{ijk}} \) | Assumes ρ ijk is in units of g/cc |