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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.