Fig. 6
From: Multimodality calibration for simultaneous fluoroscopic and nuclear imaging
Graphical representations of the calibration results showing the resolution of the reconstructed volume in the xy plane and the co-registration error as a function of distance from the pinholes for the parameter set obtained by direct physical measurement, after calibrating the pinhole positions (step 1), after calibrating the effective size of the x-ray detector (step 2), and after calibrating the position of the x-ray detector (step 3) for the five point sources. The shaded area denotes the range between the mean plus two standard deviations and the mean minus two standard deviations