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X-ray Phase-contrast imaging

Martin Bech

Universitetslektor

X-ray Phase-contrast imaging

Improved resolution in x-ray tomography by super-resolution

Författare

  • Till Dreier
  • Niccoló Peruzzi
  • Ulf Lundström
  • Martin Bech

Summary, in English

In this paper, super-resolution imaging is described and evaluated for x-ray tomography and is compared with standard tomography and upscaling during reconstruction. Blurring is minimized due to the negligible point spread of photon counting detectors and an electromagnetically movable micro-focus x-ray spot. Scans are acquired in high and lowmagnification geometry, where the latter is used to minimize penumbral blurring fromthe x-ray source. Sharpness and level ofdetail can be significantly increased in reconstructed slices to the point where the source size becomes the limiting factor. The achieved resolution of the different methods is quantified and compared using biological samples via the edge spread function, modulation transfer function, and Fourier ring correlation.

Avdelning/ar

  • Medicinsk strålningsfysik, Lund
  • X-ray Phase Contrast

Publiceringsår

2021-07-06

Språk

Engelska

Sidor

5783-5794

Publikation/Tidskrift/Serie

Applied Optics

Volym

60

Issue

20

Dokumenttyp

Artikel i tidskrift

Förlag

Optical Society of America

Ämne

  • Radiology, Nuclear Medicine and Medical Imaging
  • Other Physics Topics

Status

Published

Forskningsgrupp

  • X-ray Phase Contrast

ISBN/ISSN/Övrigt

  • ISSN: 2155-3165