Dimensionality and noise in energy selective x-ray imaging.

@article{Alvarez2013DimensionalityAN,
  title={Dimensionality and noise in energy selective x-ray imaging.},
  author={Robert E. Alvarez},
  journal={Medical physics},
  year={2013},
  volume={40 11},
  pages={111909}
}
PURPOSE To develop and test a method to quantify the effect of dimensionality on the noise in energy selective x-ray imaging. METHODS The Cramèr-Rao lower bound (CRLB), a universal lower limit of the covariance of any unbiased estimator, is used to quantify the noise. It is shown that increasing dimensionality always increases, or at best leaves the same, the variance. An analytic formula for the increase in variance in an energy selective x-ray system is derived. The formula is used to gain… CONTINUE READING
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References

Publications referenced by this paper.
Showing 1-10 of 16 references

Mod - eling the performance of a photon counting x - ray detector for CT : Energy response and pulse pileup effects

  • M. Zhang, E. C. Frey, +5 authors W. C. Barber
  • Med . Phys .
  • 2011

Experimental feasibility of multienergy photoncounting Kedge imaging in pre - clinical computed tomography

  • E. Roessl J. P. Schlomka, R. Dorscheid, +8 authors R. Proksa
  • Phys . Med . Biol .
  • 2008

Tables of x - ray mass attenuation coefficients and mass energyabsorption coefficients

  • S. M. Seltzer
  • 1997

On twoparameter models of photon cross sections : application to dualenergy CT imaging

  • S. Li, S. Devic, B. R. Whiting, F. A. Lerma
  • Med . Phys .
  • 1992

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