Table 2. Change in CTV D95 and global maximum dose under the following perturbed scenarios relative to the nominal plan: +3% density/under-range, x+3 mm, y+3 mm, z+3 mm and −3% density/over-range, x−3mm, y−3mm, z−3mm.

Perturbed dosimetric parameters (3%/3 mm)	Monte Carlo: recalculated			Monte Carlo: optimized		Wilcoxon sign-rank P value
	Median	Range		Median	Range
ÄCTV D95	−6%	−9%, −2%		−1%	−2%, 0%	0.006
ÄGlobal max dose	2%	−3%, 8%		1%	−3%, 6%	0.100

CTV, clinical target volume.