Table 3.

Ion chamber (IC) % difference and 3%/2 mm gamma passing rates (mean ± standard deviation) for all measurement devices for IMRT and VMAT plans.

	n	IC (%)	Film	n	ArcCHECK	Delta4	PD
IMRT	10	−0.6 ± 1.0	98.1 ± 1.9	15	99.1 ± 0.7	99.0 ± 1.1	99.8 ± 0.7
VMAT	24	−0.9 ± 1.6	96.3 ± 3.5	29	99.0 ± 0.9	99.3 ± 1.2	99.9 ± 0.4
ALL	34	−0.8 ± 1.4	96.8 ± 3.3	44	99.1 ± 0.9	99.2 ± 1.2	99.9 ± 0.5
Tolerance Limit			90.3		96.2	96.8	99.5
Action Limit			86.3		96.1	95.7	98.4

IC and film results do not include TG‐119 plans, while TG‐119 plans were measured with ArcCHECK, Delta4, and PD.