Table 4.

Mean error of the DIR for each subject from the landmark validation process.

	Subject	Mean target registration error (mm)
	1	0.612
	2	0.92
	3	0.279
	4	0.463
	5	1.16
	6	0.824
	7	0.96
	8	1.03
	9	1.10
	10	0.83