An iterative maximum-likelihood polychromatic algorithm for CT

  title={An iterative maximum-likelihood polychromatic algorithm for CT},
  author={Bruno De Man and Johan Nuyts and Patrick Dupont and Guy Marchal and Paul Suetens},
  journal={IEEE Transactions on Medical Imaging},
A new iterative maximum-likelihood reconstruction algorithm for X-ray computed tomography is presented. The algorithm prevents beam hardening artifacts by incorporating a polychromatic acquisition model. The continuous spectrum of the X-ray tube is modeled as a number of discrete energies. The energy dependence of the attenuation is taken into account by decomposing the linear attenuation coefficient into a photoelectric component and a Compton scatter component. The relative weight of these… CONTINUE READING