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Abstract #4007

Accelerated Single-Min-Cut Graph-Cut Algorithm Using a Variable-Layer Graph Construction Improves Field-Mapping in Water–Fat Regions

Christof Böhm1, Maximilian N. Diefenbach1, Axel Haase2, and Dimitrios C. Karampinos1

1Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany, 2Munich School of Bioengineering, Technical University of Munich, Munich, Germany

Accurate field-mapping is critical in body imaging for both robust water–fat separation and accurate quantitative susceptibility mapping. The present work proposes a single-min-cut field-mapping method to improve field-map results in water–fat regions. The proposed method based on a variable layer graph construction, solves the phase-wrapping problem and yields directly into non-wrapped field-maps. In challenging areas with low SNR or strongly varying field-maps the accuracy is significantly increased, while the computational cost is drastically reduced.

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