Würzburg 2018 – wissenschaftliches Programm

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ST: Fachverband Strahlen- und Medizinphysik

ST 5: Biomedical Imaging II

ST 5.1: Vortrag

Mittwoch, 21. März 2018, 16:30–16:45, Phys-HS P

Introduction to X-ray Talbot-Lau-interferometry — •Andreas Wolf — Erlangen Centre for Astroparticle Physics, Universität Erlangen-Nürnberg, Erwin-Rommel-Str. 1, 91058 Erlangen

X-ray Talbot-Lau-interferometry is based on the self-imaging phenomenon of the Talbot effect. In this method, a periodic microstructure -- typically a phase grating -- is illuminated in order to produce an intensity reference pattern at the detector. A sample placed before the grating induces distortions of that pattern. On top of the conventional attenuation image, X-ray Talbot-Lau-interferometry can thus yield information about the refractive properties and the scattering power of the sample.

In this contribution, the physical principles of grating-based setups and the basic reconstruction method will be reviewed. In addition, possible applications as well as recent developments in the field will be addressed.