Progress in Medical Physics

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Table. 2.

Table. 2.

The local gamma passing rates of the various passing criteria for various brain metastases measured

Treatment sites Passing criterion Local gamma passing rates (%) P-value

80 and 140 kVp 120 and 140 kVp
Brain tumor
Across the frontal lobe 2%/2 mm 96.67±4.96 99.53±0.67 0.009
1%/1 mm 74.48±15.39 95.64±5.95 <0.001
0.5%/0.5 mm 42.14±24.36 64.31±21.42 0.007
Across the corpus callosum 2%/2 mm 99.70±0.46 99.90±0.16 0.113
1%/1 mm 96.35±2.67 98.76±3.03 0.024
0.5%/0.5 mm 81.65±7.42 89.35±9.15 0.014
Across the cerebellum 2%/2 mm 98.14±1.73 99.90±0.13 0.001
1%/1 mm 79.32±6.48 95.50±3.77 <0.001
0.5%/0.5 mm 39.40±13.51 62.78±8.15 0.005

Values are presented as mean±standard deviation.

Progress in Medical Physics 2021;32:59-69 https://doi.org/10.14316/pmp.2021.32.3.59
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