Table 4.

The patient QA breakdown by technique, MLC type, LINAC model, device, and operator. Note that MLC type comparison is for the QAs delivered in the TrueBeam LINACs only (1,136 in total), LINAC model comparison excludes the plans calculated in the TPS with the Elekta Versa LINAC model (3,082 in total), and operator comparison excludes the operators who performed the lower number of QAs (2,796 in total).

	Technique		MLC‐type		LINAC Model		Device		Operator
	IMRT	VMAT	HD	Non‐HD	TrueBea	m 2100	#1	#2	#1	#2
# of QAs	1601	1515	492	644	809	2273	1552	1564	1382	1414
# of QAs for $\Gamma <90\%$	99	41	3	6	6	134	65	75	54	61
% failures	6.2%	2.7%	0.6%	0.9%	0.7%	5.9%	4.2%	4.8%	3.9%	4.3%
p‐value	$<<0.001$		$<<0.001$		$<<0.001$		0.39		0.64

HD = high‐definition; 2100 = Varian Clinac 2100; $\Gamma =\text{gamma}$ passing rate ($3\%/3 \text{mm}$).