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Designing 3D gradient coils for open MRI systems

conference contribution
posted on 2023-05-23, 17:08 authored by While, PT, Lawrence ForbesLawrence Forbes, Crozier, S
Traditionally, gradient coil windings are constrained to lie on cylindrical or planar surfaces and their precise locations are found such that they optimise coil properties such as gradient homogeneity, inductance and coil efficiency. To address secondary concerns such as eddy current induction, peripheral nerve stimulation, acoustic noise and overheating, other interesting geometries have been explored. While et al. introduce a 3D gradient coil design method in which the precise 3D geometry of the coil windings is found as part of the optimisation. Results display an interesting combination of closed loops and spiral-type windings that lie approximately on the surfaces of sets of elliptical tori. The efficiency and manufacturability of these 3D windings are improved by While et al. with the design of toroidal gradient coils of high gradient homogeneity, low inductance, high efficiency and good force balancing, which also offer perceived benefits to gradient cooling and patient claustrophobia. One standard method of reducing patient claustrophobia and improving patient access is to use open biplanar systems, however this comes at the cost of lower coil efficiency. Alternative 3D coil windings for this open-type MRI system are explored here using an adaptation to the theoretical 3D gradient coil design method of While et al.


Publication title

Proceedings of the International Society for Magnetic Resonance in Medicine - Joint Annual Meeting ISMRM-ESMRMB


Daniel K. Sodickson




School of Natural Sciences


International Society for Magnetic Resonance in Medicine

Place of publication


Event title

SMRT 19th Annual Meeting

Event Venue

Stockholm, Sweden

Date of Event (Start Date)


Date of Event (End Date)


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Copyright © 2010 ISMRM, All Rights Reserved

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Expanding knowledge in the mathematical sciences

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