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Table 3 Theoretical linear attenuation coefficients of tungsten at photopeak energies of Tc99m and I131 organised by interaction

From: Characterisation of the attenuation properties of 3D-printed tungsten for use in gamma camera collimation

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