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ST: Fachverband Strahlen- und Medizinphysik

ST 5: Biomedical Imaging II

ST 5.4: Vortrag

Mittwoch, 21. März 2018, 17:15–17:30, Phys-HS P

Talbot-Lau scanning-setup for phase-contrast X-ray imaging — •Michael Gallersdörfer, Veronika Ludwig, Georg Pelzer, Jens Rieger, Maria Seifert, Thilo Michel, and Gisela Anton — ECAP - Erlangen Centre for Astroparticle Physics, Universität Erlangen-Nürnberg, Erwin- Rommel-Straße 1, 91058 Erlangen

Using a grating-based Talbot-Lau X-ray interferometer, in addition to the conventional absorption image the differential phase-contrast image and the dark-field image are retrievable.
However, the size of the gratings needed therefore is limited due to the high demands on their properties. This makes the imaging of larger body parts difficult and thus poses a problem for clinical applications.
In this contribution we present a scanning-setup, that is able to overcome this problem. By using a moveable sample tray, an area of 25 cm x 160 cm can be measured within 24 seconds obtaining a resolution in the object plane of 100 µm x 100 µm. With this setup chest radiography or even a full body scan is feasible.