Silke M. Lechner-Greite1,
Jean-Baptiste Mathieu2, Seung-Kyun Lee3, Bruce C. Amm4,
Thomas K. Foo3, John F. Schenck3, Matthew A. Bernstein5,
John Huston5
1Diagnostics
and Biomedical Technologies Europe, GE Global Research Europe, Garching n.
Munich, Germany; 2Electromagnetics and Superconductivity
Laboratory, GE Global Research, Niskayuna, NY, United States; 3Magnetic
Resonance Imaging Laboratory, GE Global Research, Niskayuna, NY, United
States; 4Biomedical and Electronic Systems Laboratory, GE Global
Research, Niskayuna, NY, United States; 5Dept of Radiology, Mayo
Clinic, Rochester, MN, United States
We report on AC resistance predictions and measurements of a head-only shielded gradient coil prototype consisting of asymmetric transverse gradients and a symmetric axial gradient. The AC resistances were simulated with finite element method software and measured experimentally on the available prototype of the head gradient. The simulations predicted the AC losses for individual gradient coil excitation with reasonable accuracy for X and Y.
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