Table 1.

Setup errors as detected by 3DUS, CBCT, and skin marks

		Mean ± SD	Median	Range	≤5 mm
Lateral axis
	3DUS	−0.2 ± 2.7	−0.5	−5.6 … 6.9	92%
	Bone-match	−0.3 ± 1.3	−0.3	−3.7 … 1.7	100%
	Skin marks	−0.4 ± 2.6	−0.3	−6.1 … 4.5	95%
Longitudinal axis
	3DUS	−1.9 ± 2.3	−2.0	−10.0 … 2.9	94%
	Bone-match	−2.1 ± 2.5	−2.3	−7.5 … 8.9	90%
	Skin marks	−1.5 ± 3.5	−1.6	−8.4 … 7.5	78%
Vertical axis
	3DUS	0.0 ± 3.0	0.2	−7.3 … 7.2	92%
	Bone-match	0.2 ± 3.0	−0.3	−5.3 … 9.4	92%
	Skin marks	−0.8 ± 4.3	−0.8	−10.6 … 7.5	71%

In units of mm; relative to position readings by seed-match; N = 78.