Table 2.

Overview of the maximum observed deviations among all the dose DVH points analysed (Dmean and D1cc) for targets and OAR structures. The deviations are reported for the combinations of PSQA methods A-D and patients subgroups (i)-(iv).

QA approach	Standard cases Maximum observed deviation [%]	Air pockets cases Maximum observed deviation [%]	Lung cases Maximum observed deviation [%]	Implant cases Maximum observed deviation [%]
(A) Water	1.0%	7.8%	3.7%	4.9%
(B) Bulk densities	1.5%	1.7%	4.6%	2.2%
(C) Separate NN	1.0%	0.9%	1.9%	1.9%
(D) dCT	1.1%	1.3%	1.8%	1.8%