TABLE 2.

Error detection capabilities of various gamma criteria in PD and ArcCHECK measurements evaluated per plan

	Portal dosimetry			ArcCHECK
QA criterion	γ2%/2 mm	γ2%/1 mm	γ1%/1 mm	γ3%/3 mm	γ3%/2 mm	γ2%/2 mm
AUC	0.995	0.990	0.997	0.848	0.823	0.818
Std. uncertainty AUC	0.004	0.006	0.002	0.034	0.037	0.038
Optimum threshold [%]	99.0	92.0	86.0	99.3	98.4	95.3

Besides the AUC and the corresponding standard uncertainty each criterion's optimum decision threshold is stated.