Stefan Wintzheimer1, Toni Driessle2,
Michael Ledwig1, Peter M. Jakob1,2, Florian Fidler1
1MRB, Research Center
Magnetic-Resonance-Bavaria, Wuerzburg, BY, Germany; 2Experimental
Physics 5, University of Wuerzburg, Wuerzburg, BY, Germany
Shimming
a magnetic field usually requires an additional set of complex coils which
act independently from the linear gradient system used for MRI. In this study
a novel matrix gradient design is presented, which is capable of generating
both linear gradient fields for imaging and at the same time high order shim
fields to compensate inhomogeneities in the main magnetic field. They provide
the possibility to create a large variety of field profiles. Furthermore the
new design is able to switch every field order very fast due to low
inductivity of the coils.
Keywords