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1. WO2020198460 - METHOD FOR DESIGNING ELECTROMAGNETIC COILS WITH EXPLICIT PERIPHERAL NERVE STIMULATION CONSTRAINT BASED ON AN ORACLE PENALTY

Publication Number WO/2020/198460
Publication Date 01.10.2020
International Application No. PCT/US2020/024936
International Filing Date 26.03.2020
IPC
G01R 33/20 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
G01R 33/385 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
28Details of apparatus provided for in groups G01R33/44-G01R33/6496
38Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
385using gradient magnetic field coils
A61N 1/04 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
02Details
04Electrodes
A61N 2/02 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
2Magnetotherapy
02using magnetic fields produced by coils, including single turn loops or electromagnets
A61N 1/36 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
18Applying electric currents by contact electrodes
32alternating or intermittent currents
36for stimulation, e.g. heart pace-makers
A61N 1/05 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
02Details
04Electrodes
05for implantation or insertion into the body, e.g. heart electrode
Applicants
  • THE GENERAL HOSPITAL CORPORATION [US]/[US]
Inventors
  • DAVIDS, Mathias
  • GUERIN, Bastien
  • WALD, Lawrence, L.
Agents
  • STONE, Jonathan, D.
Priority Data
62/824,59127.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR DESIGNING ELECTROMAGNETIC COILS WITH EXPLICIT PERIPHERAL NERVE STIMULATION CONSTRAINT BASED ON AN ORACLE PENALTY
(FR) PROCÉDÉ DE CONCEPTION DE BOBINES ÉLECTROMAGNÉTIQUES PRÉSENTANT UNE CONTRAINTE DE STIMULATION NERVEUSE PÉRIPHÉRIQUE EXPLICITE EN FONCTION D'UNE PÉNALITÉ ORACLE
Abstract
(EN)
Systems and methods for designing and manufacturing electromagnetic coils for use with a magnetic resonance imaging ("MRI") system are described. More particularly, described here are methods for designing and manufacturing gradient coils for producing magnetic field gradients with greater peripheral nerve stimulation ("PNS") thresholds relative to conventional gradient coils. The gradient coil design is constrained using an oracle penalty that is computed to account for a PNS requirement for the coil. In other applications, the oracle penalty can be used to optimize driving patterns for an electromagnetic stimulation system, such that a target PNS requirement is achieved.
(FR)
L'invention concerne des systèmes et des procédés de conception et de fabrication de bobines électromagnétiques destinées à être utilisées avec un système d'imagerie par résonance magnétique (IRM). Plus particulièrement, l'invention concerne des procédés de conception et de fabrication de bobines de gradient permettant de produire des gradients de champ magnétique avec des seuils de stimulation nerveuse périphérique (SNP) plus importants par rapport aux bobines de gradient classiques. La conception de la bobine de gradient est contrainte par une pénalité Oracle calculée afin de tenir compte d'une exigence SNP pour la bobine. Dans d'autres applications, la pénalité Oracle peut être utilisée pour optimiser des motifs d’entraînement pour un système de stimulation électromagnétique, de telle sorte qu'une exigence de SNP cible soit obtenue.
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