Patent ID: 6462342
Filing Date: 2002-10-08
Classification: A61B,G01T,G06T

Abstract:
A method of processing data in a PET scanner wherein a projection plane data set is converted into a two-dimensional sinogram data set, the method comprising:(1) selecting a subset of projection plane data from the projection plane data set; (2) performing a set of Fourier transforms, respectively, on a plurality of data rows within the subset of projection plane data to obtain a transformed data set; (3) performing an additional set of Fourier transforms on the transformed data set to obtain intermediate results, wherein the additional set of Fourier transforms includes a plurality of individual Fourier transforms respectively corresponding to a plurality of combinations of at least two indices; (4) rebinning the intermediate results into a first array, the first array having at least a first dimension corresponding to a physical dimension of the PET scanner; (5) repeating (1)-(4) for each of the remaining subsets of projection plane data, to provide a complete data set within the first array; and (6) performing a set of inverse Fourier transforms with respect to the complete data set to provide the two-dimensional sinogram data set.