US 12,066,511 B2
Method for designing electromagnetic coils with explicit peripheral nerve stimulation constraint based on an oracle penalty
Mathias Davids, Manheim (DE); Bastien Guerin, Cambridge, MA (US); and Lawrence L. Wald, Cambridge, MA (US)
Assigned to The General Hospital Corporation, Boston, MA (US)
Appl. No. 17/442,808
Filed by THE GENERAL HOSPITAL CORPORATION, Boston, MA (US)
PCT Filed Mar. 26, 2020, PCT No. PCT/US2020/024936
§ 371(c)(1), (2) Date Sep. 24, 2021,
PCT Pub. No. WO2020/198460, PCT Pub. Date Oct. 1, 2020.
Claims priority of provisional application 62/824,591, filed on Mar. 27, 2019.
Prior Publication US 2022/0179022 A1, Jun. 9, 2022
Int. Cl. G01G 3/00 (2006.01); A61N 2/00 (2006.01); A61N 2/02 (2006.01); G01R 33/385 (2006.01)
CPC G01R 33/3858 (2013.01) [A61N 2/006 (2013.01); A61N 2/02 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method of manufacturing an electromagnet coil for use in a magnetic resonance imaging (MRI) system, the method comprising:
(a) computing a peripheral nerve stimulation (PNS) oracle penalty using a computer system, the PNS oracle penalty comprising a parameter representative of a PNS requirement for the electromagnetic coil;
(b) setting a plurality of performance metric requirements for a plurality of performance metrics for the electromagnet coil using the computer system;
(c) forming, by the computer system, a performance functional for generating a current density pattern over a coil surface for the electromagnetic coil, wherein the performance functional is based on the plurality of performance metrics and the PNS oracle penalty;
(d) optimizing, by the computer system, the performance functional based on the PNS requirement and the plurality of performance metric requirements;
(e) generating, by the computer system, a current density pattern over the coil surface based on the optimized performance functional; and
(f) outputting, to a display, information indicating the coil windings from the current density pattern.