Patent ID: 7453068
Filing Date: 2008-11-18
Classification: G01T

Abstract:
1. A method of detecting ionizing radiation using a detector assembly having a pixelated semiconductor substrate, each pixel including a central region and a region of variable response, each pixel further including at least one anode, the detector assembly including a grid electrode coupled to a first surface of the semiconductor substrate such that the grid electrode circumscribes the central region of at least one pixel anode, the detector assembly further including a cathode coupled to a second surface of the semiconductor substrate, the method comprising; measuring a first signal between the at least one pixel anode and the cathode wherein the anode is electrically biased with respect to the cathode; measuring a second signal between the grid electrode and the cathode wherein the grid electrode is electrically biased with respect to the cathode; combining the magnitude of the first signal and the magnitude of the second signal to obtain a total signal from the semiconductor substrate; and outputting the total signal.