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. Author manuscript; available in PMC: 2018 May 1.
Published in final edited form as: Nucl Instrum Methods Phys Res A. 2017 Feb 16;853:70–77. doi: 10.1016/j.nima.2017.02.030

Table 1.

Half value layer (HVL) in millimeters (mm) computed for different kVs with respect to different filtration at the input.

kV no filter 1 mm Al filter 1.5 mm Al filter 2 mm Al filter
60 0.1172 1.24 1.62 1.93
80 0.1212 1.50 2.0 2.41
100 0.1244 1.85 2.41 2.97
120 0.1296 2.19 2.92 3.6
130 0.1317 2.38 3.16 3.86