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. 2013 May 22;40(6):063902. doi: 10.1118/1.4805098

Table 1.

Beam qualities used in this experiment.

Nominal kVp First HVL1 (mm Al) Second HVL (mm Al) Homogeneity coefficient
60 2.31 3.06 0.753
70 2.65 3.78 0.700
80 3.00 4.42 0.678
100 3.82 5.76 0.663
120 4.53 7.03 0.645
1

HVL = half-value layer. All HVL were measured with Type 1100 aluminum.