Table 5 Passing rates of each arc in 280°/10° and 350°/80° plans using 3%/3, 3%/2, and 2%/2 mm gamma criteria.

From: Optimization of collimator angles in dual-arc volumetric modulated arc therapy planning for whole-brain radiotherapy with hippocampus and inner ear sparing

Gamma criteria

Passing rate for 280°/10° (%)

Passing rate for 350°/80° (%)

Arc 1 (280°)

Arc 2 (10°)

Arc 1 (350°)

Arc 2 (80°)

3%/3 mm

98.7 ± 0.6

99.1 ± 0.3

99.3 ± 0.3

97.8 ± 1.4

3%/2 mm

95.6 ± 2.2

97.6 ± 0.7

98.0 ± 0.6

95.0 ± 2.6

2%/2 mm

92.2 ± 2.8

96.1 ± 1.1

96.7 ± 1.0

91.6 ± 3.1

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