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Table 4 Theoretical linear attenuation coefficients of lead 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

Lead 140 keV 364 keV
Interaction % contribution μ (cm−1) % contribution μ (cm− 1)
Incoherent 4.0 1.09 27.4 0.86
Coherent 5.0 1.34 7.6 0.24
Photoelectric 91.0 24.68 65.0 2.03
Total 27.11 3.12