Method and system for calibrating an x-ray scanner from the image of at least one calibration standard

摘要

A method and a system for calibrating an x-ray scanner, in which the lengths dij of x-ray paths are first computed by means of the image of the calibration standard. There are then computed both the theoretical attenuations Acij and the attenuations Amij measured on the image. There are then deduced the coefficient of proportionality K between the values Acij and Amij in order to obtain values of KxAci. The values KAci and Ami are employed for calculating the corrections to be made per channel as a function of the attenuation.