Table 1.

Image quality parameters of the ExacTrac localization system using PIPSpro.

	Left Detector	Right Detector
High‐Contrast Spatial Resolution (lp/mm)
${\mathrm{f}}_{30}$	$1.39\pm 0.04$	$1.38\pm 0.04$
${\mathrm{f}}_{40}$	$1.24\pm 0.05$	$1.22\pm 0.05$
${\mathrm{f}}_{50}$	$1.09\pm 0.04$	$1.09\pm 0.05$
Low‐Contrast Resolution
CNR	$148\pm 3$	$143\pm 4$
Noise	$189\pm 4$	$191\pm 5$
Geometrical Accuracy
Length (mm)	$57.9\pm 0.5$	$57.9\pm 0.5$

Note: Parameter values are mean values of 50 measurements.