Speaker
Sara Savatović
(Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy; Elettra-Sincrotrone Trieste, Strada Statale 14 – km 163.5, 34149 Basovizza, Italy)
Description
Speckle-based imaging (SBI) is a multi-modal X-ray technique that gives access to attenuation, phase-contrast, and dark-field signals. The signal retrieval with the Unified Modulated Pattern Analysis (UMPA) algorithm is based on the modulation of a reference speckle pattern generated from a sandpaper when a sample is inserted in the beam. By stepping the diffuser or the sample transversely to the beam direction, it is possible get a better convergence of the model. Here, we show how a continuous helical acquisition can extend the detector's field-of-view and speed up the acquisition while maintaining a multi-frame approach for the signal retrieval of a test object.
Author
Sara Savatović
(Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy; Elettra-Sincrotrone Trieste, Strada Statale 14 – km 163.5, 34149 Basovizza, Italy)
Co-authors
Fabio De Marco
(Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy ; Elettra-Sincrotrone Trieste, Strada Statale 14 – km 163.5, 34149 Basovizza, Italy)
Mirko Riedel
(Department of Physics and Munich School of Bioengineering, Technical University of Munich, 85748 Garching, Germany; Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Str. 1, 21502 Geesthacht, Germany)
Vittorio Di Trapani
(Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy; Elettra-Sincrotrone Trieste, Strada Statale 14 – km 163.5, 34149 Basovizza, Italy)
Marco Margini
(Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy; Elettra-Sincrotrone Trieste, Strada Statale 14 – km 163.5, 34149 Basovizza, Italy)
Ginevra Lautizi
(Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy; Elettra-Sincrotrone Trieste, Strada Statale 14 – km 163.5, 34149 Basovizza, Italy)
Jörg Hammel
(Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Str. 1, 21502 Geesthacht, Germany)
Julia Herzen
(Department of Physics and Munich School of Bioengineering, Technical University of Munich, 85748 Garching, Germany)
Pierre Thibault
(Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy; Elettra-Sincrotrone Trieste, Strada Statale 14 – km 163.5, 34149 Basovizza, Italy)
