Table 2.

Positioning differences (in millimeters) between CBCT and LP-CBCT for all fractions studied in this work.

		CBCT	LP-CBCT	Difference
Manual Registration	$\overline{dx}\pm std(\text{LR})$	1.1 ± 1.2	1.1 ± 1.3	0.3 ± 0.5
	$\overline{dy}\pm std(\text{AP})$	2.1 ± 1.9	1.6 ± 1.3	0.5 ± 0.8
	$\overline{dx}\pm std(\text{SI})$	5.2 ± 3.6	5.1 ± 3.5	0.4 ± 0.3
	$\overline{coms}\pm std(\text{vector})$	6.1 ± 3.6	5.7 ± 3.6	1.0 ± 0.9
Automatic Registration	$\overline{dx}\pm std(\text{LR})$	1.2 ± 0.9	1.0 ± 1.1	0.2 ± 0.4
	$\overline{dy}\pm std(\text{AP})$	2.0 ± 1.8	1.8 ± 1.2	0.5 ± 0.6
	$\overline{dx}\pm std(\text{SI})$	5.0 ± 3.7	5.0 ± 3.6	0.4 ± 0.4
	$\overline{coms}\pm std(\text{vector})$	5.9 ± 3.7	5.7 ± 3.6	0.7 ± 0.7