title: Hard X-ray phase-contrast tomography of non-homogeneous specimens: grating interferometry versus propagation-based imaging.
abstract: X-ray phase-contrast imaging is an effective approach to drastically increase the contrast and sensitivity of microtomographic techniques. Numerous approaches to depict the real part of the complex-valued refractive index of a specimen are nowadays available. A comparative study using experimental data from grating-based interferometry and propagation-based phase contrast combined with single-distance phase retrieval applied to a non-homogeneous sample is presented (acquired at beamline ID19-ESRF). It is shown that grating-based interferometry can handle density gradients in a superior manner. The study underlines the complementarity of the two techniques for practical applications.
authors: European Synchrotron Radiation Facility, 71 Rue des Martyrs, 38000 Grenoble, France.
authors: Maite
authors: M
authors: Ruiz-Yaniz
authors: Lehrstuhl für Biomedizinische Physik, Physik-Department and Institut für Medizintechnik, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
authors: Irene
authors: I
authors: Zanette
authors: Lehrstuhl für Biomedizinische Physik, Physik-Department and Institut für Medizintechnik, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
authors: Adrian
authors: A
authors: Sarapata
authors: Lehrstuhl für Biomedizinische Physik, Physik-Department and Institut für Medizintechnik, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
authors: Lorenz
authors: L
authors: Birnbacher
authors: Lehrstuhl für Biomedizinische Physik, Physik-Department and Institut für Medizintechnik, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
authors: Mathias
authors: M
authors: Marschner
authors: Lehrstuhl für Biomedizinische Physik, Physik-Department and Institut für Medizintechnik, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
authors: Michael
authors: M
authors: Chabior
authors: European Synchrotron Radiation Facility, 71 Rue des Martyrs, 38000 Grenoble, France.
authors: Margie
authors: M
authors: Olbinado
authors: Lehrstuhl für Biomedizinische Physik, Physik-Department and Institut für Medizintechnik, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
authors: Franz
authors: F
authors: Pfeiffer
authors: European Synchrotron Radiation Facility, 71 Rue des Martyrs, 38000 Grenoble, France.
authors: Alexander
authors: A
authors: Rack
keywords: X-ray imaging; X-ray microtomography; phase contrast; phase retrieval