公开(公告)号：US11243283B1

公开(公告)日：2022-02-08

申请号：US16942412

申请日：2020-07-29

申请人： Synaptive Medical Inc.

发明人： Geron Andre Bindseil ,  Blaine Alexander Chronik ,  Ian Robert Oliphant Connell ,  Andrew Thomas Curtis ,  William Bradfield Handler ,  Chad Tyler Harris ,  Jeff Alan Stainsby ,  Philip J. Beatty

IPC分类号： G01R33/385 ,  G01R33/38

摘要： An asymmetric electromagnet system, method, and method of producing an asymmetric electromagnet system, wherein the asymmetric electromagnet system is for generating an imaging magnetic field in an imaging region with an imaging isocentre, the imaging region being asymmetrically positioned within a gradient coil bore inside a magnetic resonance imaging (MRI) system during imaging, the electromagnet assembly comprising: an asymmetric gradient coil configured to generate a gradient field in the asymmetrically positioned imaging region, at least one gradient axis having the gradient field with a constant offset component such that the position at which the gradient field passes through zero is offset with respect to the imaging isocentre of the asymmetrically positioned imaging region.

公开(公告)号：US11269032B2

公开(公告)日：2022-03-08

申请号：US15983853

申请日：2018-05-18

申请人： Synaptive Medical Inc.

发明人： Geron Andre Bindseil ,  William Bradfield Handler

IPC分类号： G01R33/385 ,  G01R33/38 ,  G01R33/3875 ,  H01F5/04 ,  H01F41/10

摘要： A magnetic resonance (MR) imaging system includes: a main magnet configured to generate a volume of magnet field suitable for forming MR imaging; a transmit radio frequency (RF) coil assembly configured to transmit at least one RF signal; a receive radio frequency (RF) coil assembly configured to, in response to the at least one RF pulse, receive MR signals; a gradient coil assembly comprising (i) windings of coils arranged in a radial layer, and (ii) a first set of connectors embedded in the radial layer to reduce a radial extent occupied by the gradient coil assembly, the first set of electrical connectors configured to drive the windings of coils; and a control unit coupled to the transmit RF coil assembly, the receive RF coil assembly, and the gradient coils, the control unit configured to synchronously operate the gradient coil assembly, the transmit coil assembly, and the receive coil assembly.

公开(公告)号：US11662405B2

公开(公告)日：2023-05-30

申请号：US16990198

申请日：2020-08-11

申请人： SYNAPTIVE MEDICAL INC.

发明人： Geron Andre Bindseil ,  Chad Tyler Harris

IPC分类号： G01R33/38 ,  G01R33/381 ,  G06F30/10

CPC分类号： G01R33/3802 ,  G01R33/381 ,  G06F30/10

摘要： A method of manufacturing an electromagnet coil for use in a magnetic resonance imaging (MRI) system includes: generating a coil surface representation defining a surface to contain the electromagnet coil; defining a set of performance metric functions, the set including a mutual inductance function defining mutual inductance between the electromagnet coil and a second electromagnet coil; defining a performance functional based on the coil surface representation and the set of performance metric functions; optimizing the performance functional; generating a current density pattern over the coil surface representation based on the optimized performance functional; and obtaining coil windings defining the electromagnet coil from the current density pattern.

公开(公告)号：US11567155B2

公开(公告)日：2023-01-31

申请号：US17026541

申请日：2020-09-21

申请人： Synaptive Medical Inc.

发明人： Chad Tyler Harris ,  Geron Andre Bindseil ,  Alexander Gyles Panther ,  Jeff Alan Stainsby ,  Philip J. Beatty

IPC分类号： G01R33/389 ,  G01R33/38 ,  G01R33/3875 ,  G01R33/421 ,  G01R33/385

摘要： Described here are systems and methods for mitigating or otherwise removing the effects of short-term magnetic field instabilities caused by oscillations of the cold head in a cryogen-free magnet system used for magnetic resonance systems, such as magnetic resonance imaging (“MRI”) systems, nuclear magnetic resonance (“NMR”) systems, or the like.