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Abstract #0184

Hierarchical multi-resolution graph-cuts for water–fat–silicone separation in breast MRI

Jonathan K. Stelter1,2, Christof Boehm1, Stefan Ruschke1, Kilian Weiss3, Maximilian N. Diefenbach1, Mingming Wu1, Tabea Borde1, Marcus R. Makowski1, Eva M. Fallenberg1, and Dimitrios C. Karampinos1
1Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany, 2Department of Physics, Technical University of Munich, Garching, Germany, 3Philips Healthcare, Hamburg, Germany


A water- and fat-suppressed sequence is typically used to verify the integrity of silicone breast implants. The feasibility of using chemical shift encoding-based MRI for in vivo water–fat–silicone separation was recently shown. In this work, a hierarchical multi-resolution graph-cut framework is developed and proposed for water–fat–silicone separation in breast MRI. Robustness and competitive processing times are achieved by performing graph-cuts using varying spatial resolution. Results show successful water–fat–silicone separation for 4 echoes (the minimum of required echoes) without water–fat–silicone swaps and an improved silicone contrast compared to the conventional sequence.

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