Presampling, algorithm factors, and noise: considerations for CT in particular and for medical imaging in general.

@article{Kachelriess2005PresamplingAF,
  title={Presampling, algorithm factors, and noise: considerations for CT in particular and for medical imaging in general.},
  author={Marc Kachelriess and Willi A. Kalender},
  journal={Medical physics},
  year={2005},
  volume={32 5},
  pages={1321-34}
}
CT scanners acquire noisy data at discrete sample positions. Typically, a convention of how to continue these data from discrete integer positions to the continuous domain must be applied during processing. We study the properties of three typical one-dimensional spatial domain interpolation algorithms in terms of a cost or quality factor Q. This figure of merit Q is a function of spatial resolution, data noise, and dose and is used to optimize detector design. Spatial resolution R is defined… CONTINUE READING