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Table 7 Simulated components of scatter within energy window for different collimator materials and designs

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

Material Tungsten Lead (2% Sb)
Density (g/cm) 100 80 80 100
Septal thickness (mm) 0.20 0.20 0.22 0.20
Geometrical collimation 86.7% 80.6% 82.2% 79.2%
Penetration through septa 6.7% 9.1% 8.9% 10.2%
Scatter within collimator 6.6% 10.3% 8.9% 10.6%
Relative geometric efficiency 100% 100% 94% 100%