Table 10.

Results from 28 independent end‐to‐end hidden0target tests, 12 performed using 2D/2D (ExacTrac) localization and 16 performed using cone‐beam CT localization

	Hidden Target Offset (mm)
	Anterior—Posterior				Right‐Left				Superior—Inferior
	Ave	Min	Max	STD	Ave	Min	Max	STD	Ave	Min	Max	STD
All Data $(\mathrm{n}=28)$	0.00	$-0.67$	0.79	0.34	$-0.26$	$-0.75$	0.46	0.27	0.19	$-0.34$	0.73	0.27
2D/2D $(\mathrm{n}=12)$	0.14	$-0.67$	0.79	0.37	$-0.24$	$-0.60$	0.46	0.29	0.24	$-0.29$	0.69	0.27
CBCT $(\mathrm{n}=16)$	$-0.09$	$-0.49$	0.48	0.28	$-0.28$	$-0.75$	0.06	0.27	0.15	$-0.34$	0.73	0.27