Table 7.

Quantification of the effect of TPS angle discretization (2°, 4° and 6° angular CP spacing) when estimating continuous, full rotation simple 2 cm‐wide arc. All values are in passing rates (%, calculated vs. calculated) with local dose normalization.

		$6^0-2^0$			$4^0-2^0$
ROI Analyzed	$\gamma (3/3)\le 1$	$\gamma (2/2)\le 1$	$\gamma (1/1)\le 1$	$\gamma (3/3)\le 1$	$\gamma (2/2)\le 1$	$\gamma (1/1)\le 1$
1 cm Diameter Cylinder	100	97.3	87.2	94.5	92.2	88.0
3 cm Diameter Cylinder	100	98.3	82.2	96.1	93.2	88.9
5 cm Diameter Cylinder	100	98.5	90.0	97.1	94.8	90.3
10 cm Diameter Cylinder	100	99.6	94.3	98.3	96.9	93.4
ArcCHECK Detector Surface	56.6	51.2	42.1	70.0	58.2	40.5