Analytical Inversion Formula for Uniformly Attenuated Fan-Beam Projections

  title={Analytical Inversion Formula for Uniformly Attenuated Fan-Beam Projections},
  author={Y. Weng and Gengsheng Larry Zeng and Grant T. Gullberg},
A convolution backprojection algorithm was derived by Tretiak and Metz to reconstruct two-dimensional (2-D) transaxial slices from uniformly attenuated parallel-beam projections. Using transformation of coordinates, this algorithm can be modified to obtain a formulation useful to reconstruct uniformly attenuated fan-beam projections. Unlike that for parallel-beam projections, this formulation does not produce a filtered backprojection reconstruction algorithm but instead has a formulation that… CONTINUE READING