An x-ray CT polymer gel dosimetry prototype: I. Remnant artefact removal.

@article{Jirsek2012AnXC,
  title={An x-ray CT polymer gel dosimetry prototype: I. Remnant artefact removal.},
  author={Adam Jir{\'a}sek and James Carrick and Michelle Hilts},
  journal={Physics in medicine and biology},
  year={2012},
  volume={57 10},
  pages={
          3137-53
        }
}
In this study a new x-ray CT polymer gel dosimetry (PGD) filtering technique is presented for the removal of (i) remnant ring and streak artefacts, and (ii) 'structured' noise in the form of minute, intrinsic gel density fluctuations. It is shown that the noise present within x-ray CT PGD images is not purely stochastic (pixel by pixel) in nature, but rather is 'structured', and hence purely stochastic-based noise-removal filters fail in removing this significant, unwanted noise component. The… CONTINUE READING
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