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Abstract #5025

Spherical Harmonic Active Shim Set Design for a Shoulder Cut-out MRI Platform

Eric J Lessard1, William B Handler1, and Blaine A Chronik1
1Western University, London, ON, Canada

Synopsis

This simulation and electromagnetic design work explored the development of an active second order spherical harmonic shim set for eddy current compensation in a shoulder cut-out head and neck imaging platform. While the small radius shoulder cut-out shims can be driven faster and stronger than the larger radius complete cylinder shims they suffer in homogeneity and eddy current compensation. This difference in compensation is minimized with the addition of two purpose designed eddy current compensation coils.

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