Patent ID: 9000385
Filing Date: 2015-04-07
Classification: G01T

Abstract:
1. A method for acquiring photon count information, said method comprising: receiving photons at a detector array having a plurality of pixels; determining a corrected value for the detector array; counting the photons that are above a first energy threshold using a first counter; counting the photons that are above a different second energy threshold that is higher than the first energy threshold using a second counter; and calculating a pile-up estimate using the photon counts from the first counter when the photon counts from the first counter are less than the corrected value or the photon counts from the second counter and not the first counter when the photon counts from the first counter are equal to or greater than the corrected value, wherein the corrected value is a value within a predetermined amount of a maximum count rate for the detector array, wherein the maximum count rate corresponds to a value at which the pixels experience saturation.