Patent ID: 6381349
Filing Date: 2002-04-30
Classification: G06T

Abstract:
A method of modeling 3D first-order scatter, non-uniform attenuation, and 3D system geometric point response in an ML-EM algorithm to reconstruction SPECT data comprising:(a) performing an initial slice-to-slice blurring on a volume of estimated emission source data, said volume of estimated emission source data being represented by a 3D array of voxels; (b) voxel-by-voxel multiplying step (a) results by a volume of attenuation coefficients to produce a volume of effective scatter source data; (c) voxel-by-voxel adding the volume of effective scatter source data to the volume of estimated emission source data to produce a volume of combined estimated emission and scatter source data; and, (d) performing a secondary slice-to-slice blurring on the volume of combined estimated emission and scatter source data.