Table 3 Theoretical linear attenuation coefficients of tungsten at photopeak energies of Tc99m and I131 organised by interaction
Tungsten | 140 keV | 364 keV | ||
|---|---|---|---|---|
Interaction | % contribution | μ (cm−1) | % contribution | μ (cm−1) |
Incoherent | 5.2 | 1.90 | 34.1 | 1.48 |
Coherent | 5.3 | 1.93 | 7.8 | 0.34 |
Photoelectric | 89.5 | 32.39 | 58.1 | 2.52 |
Total | – | 36.23 | – | 4.34 |