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