Patent ID: 6794672
Filing Date: 2004-09-21
Classification: G03B

Abstract:
A system for registering a radiation image, comprising:a radiation pick-up device comprising a charge layer wherein electrical charges are generated dependent on radiation incident on said charge layer, an electrode layer allocated to said charge layer that is chargeable with high-voltage for triggering an electron-multiplying avalanche effect in said charge layer by producing a potential across said charge layer resulting from said high voltage, and a read-out device for reading out charges generated in said charge layer using an electron beam; a reset light source positioned for exposing said charge layer to reset said charge layer to a selected charge level; and a control device connected to said radiation pick-up device, said high voltage being supplied to said electrode layer by said control unit and said control unit varying said high voltage to vary a gain of said charge layer caused by said avalanche effect.