An algorithm for noise suppression in dual energy CT material density images.

@article{Kalender1988AnAF,
  title={An algorithm for noise suppression in dual energy CT material density images.},
  author={Willi A. Kalender and Erhard Klotz and L Kostaridou},
  journal={IEEE transactions on medical imaging},
  year={1988},
  volume={7 3},
  pages={218-24}
}
Dual-energy material density images obtained by prereconstruction-basis material decomposition techniques offer specific tissue information, but they exhibit relatively high pixel noise. It is shown that noise in the material density images is negatively correlated and that this can be exploited for noise reduction in the two-basis material density images. The algorithm minimizes noise-related differences between pixels and their local mean values, with the constraint that monoenergetic CT… CONTINUE READING