Reduction of noise-induced streak artifacts in X-ray computed tomography through spline-based penalized-likelihood sinogram smoothing

@article{Rivire2005ReductionON,
  title={Reduction of noise-induced streak artifacts in X-ray computed tomography through spline-based penalized-likelihood sinogram smoothing},
  author={Patrick J. La Rivi{\`e}re and David Matthew Billmire},
  journal={IEEE Transactions on Medical Imaging},
  year={2005},
  volume={24},
  pages={105-111}
}
We present a statistically principled sinogram smoothing approach for X-ray computed tomography (CT) with the intent of reducing noise-induced streak artifacts. These artifacts arise in CT when some subset of the transmission measurements capture relatively few photons because of high attenuation along the measurement lines. Attempts to reduce these artifacts have focused on the use of adaptive filters that strive to tailor the degree of smoothing to the local noise levels in the measurements… CONTINUE READING
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