Abstract #1795

Combination of Individual Coil QSM at High Field Strength (7T)

Uten Yarach¹, Hendrik Mattern¹, Alessandro Sciarra¹, and Oliver Speck¹

¹Department of Biomedical Magnetic Resonance, Otto-von-Guericke University Magdeburg, Magdeburg, Germany

Phase image reconstruction from multi-channel data at high field strength becomes challenging since a volume body coil that provides the phase offset information is generally not available. Several coil combination techniques are still computation intensive and prone to errors for strongly T2*-weighted data due to the requirement of spatial smoothness of image phases, required phase reference from body coil scan, and also hampered for strongly localized B1 coil sensitivities. These limitations lead to phase image inconsistencies and may cause artifacts in QSMs. We demonstrated here that the coil combination should be considered after performing individual physical and/or virtual coil QSM.

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