Patent ID: 8265223
Filing Date: 2012-09-11
Classification: A61B,G01T

Abstract:
1. An imaging system, comprising: at least one radiation generating source that is selectively turned on and off so as to alternately emit radiation that traverse an examination region; a common detector that detects radiation that traverses the examination region and generates a signal indicative thereof; pulse generating circuitry that generates a pulse train, including a plurality of pulses, with a frequency indicative of the signal; and processing electronics that determine an approximation of the signal for the at least one radiation generating source for a sampling interval based on a number of pulses in the pulse train for the sampling interval and charge of the pulses in the pulse train, wherein the processing electronics calculate a first contribution to the approximation for a first range of pulses from a first pulse in the sampling interval to a last pulse in the sampling interval, and estimates a second contribution to the approximation for a second range of pulses from the last pulse in the sampling interval to an end of the sampling interval, wherein the second contribution is estimated based on charge from the first contribution.