Progress in Medical Physics

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