Patent ID: 9535174
Date: 2017-01-03
CPC Classifications: G01T

Claim:
1. A direct conversion photon counting detector, comprising a detector cathode, a detector anode and a direct conversion material layer positioned between said detector cathode and said detector anode, said detector anode and/or detector cathode comprising a plurality of electrode pixels that are adapted to detect a presence of electrons, wherein at least one of the electrode pixels is segmented into at least a collecting electrode pixel segment, a non-collecting electrode pixel segment and a steering electrode pixel segment, wherein the non-collecting electrode pixel segment is disposed completely between the collecting electrode segment and the steering electrode segment; wherein an electrical potential of the steering electrode pixel segment is negative and an electrical potential of the collecting electrode pixel segment is positive and an electrical potential of the non-collecting electrode pixel segment is positive; wherein the detector further comprises electronic circuitry electrically coupled to the collecting electrode segment and to the non-collecting electrode segment to generate a first electrical signal and a second electrical signal respectively, said electronic circuitry comprising a signal subtractor configured to subtract the second electrical signal from the first electrical signal.