Dresden 2011 – scientific programme
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ST: Fachverband Strahlen- und Medizinphysik
ST 5: Imaging with Ionizing Radiation I
ST 5.4: Talk
Thursday, March 17, 2011, 10:45–11:00, POT 112
High-resolution x-ray differential phase-contrast imaging with 2D grating structures — •Marco Stockmar1, Martin Bech1, Guillaume Potdevin1, Simone Schleede1, Michael Chabior2, Irene Zanette3, and Franz Pfeiffer1 — 1Department of Physics (E17) and Institute of Medical Engineering (IMETUM), Technische Universität München, Germany — 2Siemens Corporate Technology, Munich, Germany — 3European Synchrotron Radiation Facility, France
Here we present results of differential phase-contrast (DPC) imaging using a grating interferometer with a high resolution (HR) detector and a 2D grating. The HR detector can directly resolve the interference pattern and allows therefore to omit the usually used analyzer grating. By use of a 2D grating the differential phase shift can be measured in two orthogonal directions improving the results of the phase integration. In addition, the 2D scattering signal allows to make a rough estimate of the preferred direction of sub-resolution sized features. Experimental results for synchrotron and laboratory x-ray sources will be presented.