Detector z-axis gain non-uniformity correction in a computed tomography system

摘要

A method for correcting projection data for detector cell gain error in a computed tomography system, the system including an x-ray source for projecting an x-ray beam towards a detector, the detector including a plurality of detector cells, the projection data being generated from output signals from the detector cells, said method comprising: determining actual detector gain profiles; determining effective detector gain profiles; and determining error in projection data using the determined actual detector gain profiles and the determined effective detector gain profiles. 1663 ד' באב התשס" א - July 24, 2001