Table 1.

Probability of not covering the entire GTV (%)

Method	RL	AP	SI	Total
Registration using skeletal landmarks alone	69%	4.6%	39%	82%
Strategy I (PTV = ITV + 3 mm)	32%	0.3%	20%	46%
Strategy II (PTV = GTV + 1.5 cm)	0.3%	0%	3.6%	4%