Iterative reconstruction for helical CT: a simulation study.

  title={Iterative reconstruction for helical CT: a simulation study.},
  author={Johan Nuyts and Bruno K. B. De Man and Patrick Dupont and Michel Defrise and Paul Suetens and Luc Mortelmans},
  journal={Physics in medicine and biology},
  volume={43 4},
Iterative reconstruction algorithms for helical CT are presented. The algorithms are derived from two-dimensional reconstruction algorithms, by adapting the projector/backprojector to the helical orbit of the source, and by constraining the axial frequencies with a Gaussian sieve. Simulations have been carried out and the performance of the iterative algorithms is compared to that of filtered backprojection of synthetic (interpolated) two-dimensional sinograms. The iterative algorithms produce… CONTINUE READING