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Abstract #4226

The Effect of B0 Inhomogeneities on Shim Coil Mapping: A Problem and its Solution

Deena Roller1 and Assaf Tal1

1Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, Israel

B0 field inhomogeneities lead to distortions in gradient echo acquired field maps. In particular, these distortions are present when mapping the spatial distribution of a system's shim coils. Here, we assess the effect of these distortions using in-vivo data and computer simulations, and suggest an iterative algorithm which completely removes them without the need of any additional acquisitions.

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