Patent ID: 8213566
Filing Date: 2012-07-03
Classification: A61B,G01N

Abstract:
1. An imaging system, comprising: a radiation source that emits poly-chromatic radiation that traverses an examination region; a detector that detects radiation traversing the examination region and produces a signal indicative of the energy of a detected photon; an energy discriminator that energy resolves the signal based on a plurality of different energy thresholds, wherein at least two of the energy thresholds have values corresponding to at least two different K-edge energies of two different elements in a mixture disposed in the examination region; a signal decomposer that decomposes the energy-resolved signal into at least a multi K-edge component representing the at least two different K-edge energies; and a reconstructor that reconstructs the multi K-edge component to generate a multi K-edge image, representative of the different materials, based on a stoichiometric ratio of the two different elements in the mixture that is known and substantially constant.