Martin Bech
Universitetslektor
Non-binary phase gratings for x-ray imaging with a compact Talbot interferometer
Författare
Summary, in English
X-ray imaging using a Talbot-Lau interferometer, consisting of three binary gratings, is a well-established approach to acquire x-ray phase-contrast and dark-field images with a polychromatic source. However, challenges in the production of high aspect ratio gratings limit the construction of a compact setup for high x-ray energies. In this study we consider the use of phase gratings with triangular-shaped structures in an x-ray interferometer and show that such gratings can yield high visibilities for significantly shorter propagation distances than conventional gratings with binary structures. The findings are supported by simulation and experimental results for both cases of a monochromatic and a polychromatic source.
Avdelning/ar
- X-ray Phase Contrast
- Medicinsk strålningsfysik, Lund
Publiceringsår
2014-01-13
Språk
Engelska
Sidor
56-547
Publikation/Tidskrift/Serie
Optics Express
Volym
22
Issue
1
Dokumenttyp
Artikel i tidskrift
Förlag
Optical Society of America
Ämne
- Other Physics Topics
- Radiology, Nuclear Medicine and Medical Imaging
Nyckelord
- Computer Simulation
- Computer-Aided Design
- Equipment Design
- Equipment Failure Analysis
- Interferometry/instrumentation
- Lighting/instrumentation
- Models, Theoretical
- Refractometry/instrumentation
- X-Ray Diffraction/instrumentation
Status
Published
Forskningsgrupp
- X-ray Phase Contrast
ISBN/ISSN/Övrigt
- ISSN: 1094-4087