X-ray imaging with a grating interferometer

Improved contrast in X-ray images can be obtained through phase contrast and dark-field imaging. Of the different methods for phase contrast imaging, the recently developed grating based interferometer is well suited for use at different X-ray sources, including a standard X-ray tube. This thesis explains the principles of a grating based interferometer, and the algorithms for tomographic reconstruction of differential phase contrast and dark-field images are derived. Experimental data recorded at three different X-ray sources are presented, and the data quality depending on source properties are discussed.

Autorentext

Martin Bech completed the PhD degree in physics from the Niels Bohr Institute in year 2009. Currently he is employed at the Technical University in Munich. August 2010 martin.bech@tum.de