Die DPG-Frühjahrstagung in Bonn musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
ST: Fachverband Strahlen- und Medizinphysik
ST 6: Medical Imaging
ST 6.3: Vortrag
Donnerstag, 2. April 2020, 11:30–11:45, H-HS II
Breast Imaging with a Grating-Based X-Ray Phase Contrast Setup — •Wolfgang Gottwald1, Lisa Heck1, Lorenz Birnbacher1,2, Karin Hellerhoff3, Susanne Grandl3, Josef Scholz1, Christian Petrich1, Mirko Riedel1, Stephan Metz2, Daniela Pfeiffer2, and Julia Herzen1 — 1Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, Germany — 2Department of Diagnostic and Interventional Radiology, School of Medicine and Klinikum rechts der Isar, Technical University of Munich, Germany — 3Department of Diagnostic Radiology, Rotkreuzklinikum Munich, Germany
Previous studies have shown that phase-contrast and dark-field x-ray imaging have a great potential to improve the conventional absorption based method used for breast imaging. (Scherer, K et al. 2014 and Scherer, K et al. 2015) Especially dense breast tissue exhibits minor deviations in the attenuation-based signal, therefore resulting in low soft tissue contrast for absorption-contrast imaging. This can be circumvented by utilizing the electron density contrast with our phase-sensitive technique. In this study dark-field, phase-contrast and absorption signals can be obtained simultaneously by grating-based phase stepping. In order to further push grating-based phase-contrast for breast imaging, an existing setup at a laboratory x-ray source was optimized and its performance evaluated. In this work we aim to improve the image quality of breast imaging at the current setup by testing its capabilities with freshly dissected mastectomy samples.