APPARATUS AND METHOD FOR COMPUTED TOMOGRAPHY SYSTEM CALIBRATION

A system and method for calibrating a computed tomography (CT) scanner including scanning a calibration apparatus with the CT scanner, and determining a first scan edge of a first calibration layer, a second scan edge of a second calibration layer, and a floating point of an opening from the scan. The method also includes determining a first scan dimension and second scan dimension measured in the longitudinal direction from the first scan edge to the floating point, and the second scan edge to the floating point, respectively. The method also includes determining a first scan overhang based on a difference between the first scan dimension and the second scan dimension and comparing the first scan overhang to the calibration overhang. The method also includes determining a first level of uncertainty for the CT scanner based on the comparing.