Ali Nahardani1,2, Simon Leistikow2,3, Martin Krämer1,4, Karl-Heinz Herrmann1, Wan-Ting Zhao1,2, Daniel Güllmar1, Lars Linsen3, Jürgen R. Reichenbach1, and Verena Hoerr1,2,5
1Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany, 2Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany, 3Institute of Computer Science, Department of Mathematics and Computer Science, Westfälische Wilhelms-Universität Münster, Muenster, Germany, 4Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany, 5Clinic for Radiology, University Hospital Muenster, Muenster, Germany
1Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany, 2Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany, 3Institute of Computer Science, Department of Mathematics and Computer Science, Westfälische Wilhelms-Universität Münster, Muenster, Germany, 4Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany, 5Clinic for Radiology, University Hospital Muenster, Muenster, Germany
The L1-ESPIRiT reconstruction changes the spatial velocity profiles, preserves the directional information of the velocity vector field and underestimates its magnitude in comparison to L2-ESPIRiT for different undersampling factors.
Representative streamline reconstructions from different measurements on Phantom-B with varying undersampling factors using the L1- and L2-ESPIRiT algorithm. The structure and density of streamlines were obviously preserved by the L1-ESPIRiT reconstruction in comparison to L2-ESPIRiT.
2D embedding of pairwise dissimilarities using MDS for velocity, vorticity, and helicity density fields, respectively, for Phantom B. The pairwise Euclidean distances between points resemble pairwise field dissimilarity. The axes are dimensionless and only depict the relative volumetric dissimilarity normalized to the maximum dissimilarity value.
