Head-only gradient coil is not only more power efficient than the whole body system for high quality MR neuroimaging, but also reduces risk of peripheral nerve stimulation. In this abstract we compared two different head-only transverse gradient coil designs -- a non-folded design and a patient-end folded design, pointed out that the current turns on the connection region of the folded design that close to human body is more efficient to induce electric field and eddy current than the non-folded design in the neck, shoulder, chest and back. A connection-region turn-constrained folded coil design confirmed the observation.
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