Regensburg 2019 – scientific programme
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ST: Fachverband Strahlen- und Medizinphysik
ST 4: Poster session
ST 4.2: Poster
Tuesday, April 2, 2019, 14:00–16:00, Poster B1
Contrast-Enhanced Spectral Mammography with a Compact Synchrotron Source — Lisa Heck1,2,3, •Mirko Riedel1,2, Martin Dierolf1,2, Christoph Jud1,2, Elena Eggl1,2, Thorsten Sellerer1,2, Korbinian Mechlem1,2, Benedikt Günther1,2, Klaus Achterhold1,2, Bernhard Gleich2, Stephan Metz4, Daniela Pfeiffer4, Franz Pfeiffer1,2,4, and Julia Herzen1,2 — 1Chair of Biomedical Physics, Department of Physics, TU Munich, Germany — 2Munich School of BioEngineering, TU Munich, Germany — 3Chair of Experimental Physics IV, TU Dortmund, Germany — 4Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, TU Munich, Germany
Contrast-enhanced spectral mammography (CESM) based on K-edge subtraction (KES) helps to identify uncertain findings in mammography as second-level examination. Here, the commonly used dual-energy KES imaging technique and a two-material decomposition method were used to perform CESM with a mammographic accreditation phantom at a compact synchrotron source. For a better evaluation of the laboratory results, clinical CESM images were also performed. Improved image quality has been accomplished with both aforementioned methods while the spectral approach achieved even better results than the KES. Exemplarily, we demonstrate the reduction of the applied dose by up to 66% compared to the clinically applied dose. These promising results underline the potential of this novel type of X-ray source and of the spectral approach to improve the diagnostic quality of CESM and to reduce the applied dose in clinical examinations.