Patent ID: 9269168
Filing Date: 2016-02-23
CPC Classification: A61B,G06T

Claim Text:
1. A method for forming a three-dimensional reconstructed image of an object, the method comprising: a) acquiring a plurality of two dimensional measured radiographic projection images scanned over a set of projection angles about the object, wherein the measured projection image data is obtained from an energy resolving detector that distinguishes at least first and second energy bands from within an initial x-ray spectrum of an x-ray beam; b) forming a volume reconstruction comprising image voxels having values representative of the scanned object by back projection of the measured projection image data; c) iteratively modifying the volume reconstruction voxel values to generate an iterative reconstruction by repeating, for a plurality of angles in the set of projection angles and for each of a plurality of pixels of the detector, the steps of: and d) displaying the generated iterative reconstruction; wherein the energy resolving detector is a photon-counting detector, where the voxel values are adjusted according to a ratio of the attenuation coefficient at the spectral distribution at the voxel to the attenuation coefficient at a monochromatic x-ray energy.