Tomographic phase and attenuation extraction for a sample composed of unknown materials using x-ray propagation-based phase-contrast imaging.

@article{Alloo2022TomographicPA,
  title={Tomographic phase and attenuation extraction for a sample composed of unknown materials using x-ray propagation-based phase-contrast imaging.},
  author={Samantha J. Alloo and David M. Paganin and Kaye S. Morgan and Timur E Gureyev and Sherry C. Mayo and Sara Mohammadi and Darren Lockie and Ralf Hendrik Menk and Fulvia Arfelli and Fabrizio Zanconati and Giuliana Tromba and Konstantin M. Pavlov},
  journal={Optics letters},
  year={2022},
  volume={47 8},
  pages={
          1945-1948
        }
}
Propagation-based phase-contrast x-ray imaging (PB-PCXI) generates image contrast by utilizing sample-imposed phase-shifts. This has proven useful when imaging weakly attenuating samples, as conventional attenuation-based imaging does not always provide adequate contrast. We present a PB-PCXI algorithm capable of extracting the x-ray attenuation  β and refraction  δ, components of the complex refractive index of distinct materials within an unknown sample. The method involves curve fitting an… 

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SHOWING 1-5 OF 5 REFERENCES
Principles of Computerized Tomographic Imaging
The total attenuation suffered by one beam of x-rays as it travels in a straight line through an object can be represented by a line integral. Combining a set of line integrals forms a projection.
The Mathematics of Computerized Tomography
The Mathematics of Computerized Tomography covers the relevant mathematical theory of the Radon transform and related transforms and also studies more practical questions such as stability, sampling,
Numerical Recipes in FORTRAN - The Art of Scientific Computing, 2nd Edition
TLDR
This paper presents a list of recommended recipes for making CDRom decks and some examples of how these recipes can be modified to suit theommelier's needs.
APPL
TLDR
A prototype probability package named APPL (A Probability Programming Language) is presented that can be used to manipulate random variables and examples illustrate its use.
Condens
  • Matter 33, 363002
  • 2021