Table 2.

The mean and standard deviation of the percent differences of V30%[%], V50%[%], V12Gy[cc], and CI values between original plans and re-planned plans using 5 mm leaf width MLCs and the plans with VMAT arcs duplicated and altered by 10°, 15°, and 90°.

Dosimetric values/Methods	Re-planned	Duplicated, altered by 10°	Duplicated, altered by 15°	Duplicated, altered by 90°
V30%[%]	27.75% ± 0.16%	24.11% ± 0.14%	29.51% ± 0.19%	35.84% ± 0.21%
V50%[%]	20.04% ± 0.13%	19.39% ± 0.14%	22.13% ± 0.15%	21.02% ± 0.14%
V12Gy[cc]	16.91% ± 0.12%	16.78% ± 0.1%	18.84% ± 0.11%	18.53% ± 0.11%
CI	2.22% ± 0.05%	0.3% ± 0.09%	0.17% ± 0.07%	−0.18% ± 0.08%