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公开(公告)号：US11280858B2
公开(公告)日：2022-03-22
申请号：US16463575
申请日：2017-11-22
发明人： Robert Steven Stormont , Scott Allen Lindsay , Victor Taracila , Ghazi Mustafa , Nabeel M. Malik , Fraser John Laing Robb , Dashen Chu
IPC分类号： G01R33/341 , A61B5/055 , G01R33/36 , G01R33/54 , G01R33/3415
摘要： Various methods and systems are provided for a flexible, lightweight, and low-cost radio frequency (RF) coil of a magnetic resonance imaging (MRI) system. In one example, a RF coil assembly for an MRI system includes a distributed capacitance loop portion comprising two parallel conductor wires encapsulated and separated by a dielectric material, the two parallel conductor wires maintained separate by the dielectric material along an entire length of the loop portion between terminating ends thereof, a coupling electronics portion including a pre-amplifier, and a coil-interfacing cable extending between the coupling electronics portion and an interfacing connector of the RF coil assembly.
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公开(公告)号：US10983185B2
公开(公告)日：2021-04-20
申请号：US16191827
申请日：2018-11-15
发明人： Ceara Delmore Stack , Fraser John Laing Robb , Victor Taracila , Robert Steven Stormont , Luke Charles Smith
IPC分类号： G01R33/3415 , G01R33/48 , G01R33/34 , G01R33/36
摘要： Methods and systems are provided for radio frequency (RF) coils for magnetic resonance imaging (MRI) systems. In one embodiment, a system comprises: a radio frequency (RF) coil array for a magnetic resonance imaging (MRI) system, including: a flexible shell including an inner layer; and a plurality of flexible RF coils embedded within the inner layer, with each RF coil of the plurality of RF coils including two distributed capacitance wire conductors. In this way, the RF coil array may deform in order to conform to a body of a patient.
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公开(公告)号：US20170343627A1
公开(公告)日：2017-11-30
申请号：US15166636
申请日：2016-05-27
CPC分类号： G01R33/3685
摘要： Various methods and systems are provided for a common mode trap for a magnetic resonance imaging (MRI) apparatus. In one embodiment, a common mode trap for an MRI apparatus comprises: a first conductor and a second conductor counterwound around a length of a central conductor, wherein the first and the second conductors are radially spaced a first distance from the central conductor at first and second ends of the length, and wherein the first and the second conductors are radially spaced a second distance larger than the first distance from the central conductor at a midpoint of the length. In this way, coupling and subsequent detuning of common mode traps provided adjacent to one another may be prevented.
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公开(公告)号：US20200158800A1
公开(公告)日：2020-05-21
申请号：US16198713
申请日：2018-11-21
发明人： Victor Taracila , Balint Franko , Mark Giancola , Yun-Jeong Stickle , Clyve Konrad Rosales Follante , Fraser John Laing Robb
IPC分类号： G01R33/34 , G01R33/3415 , A61B5/055 , A61B5/00 , A61G13/12
摘要： Various systems are provided for neck radio frequency (RF) coil assemblies for a magnetic resonance imaging (MM) system. In one example, a neck RF coil assembly includes a central RF coil array including a first plurality of RF coils configured to cover a neck of a subject to be imaged, an upper RF coil array including a second plurality of RF coils extending upward from the central RF coil array and configured to cover a lower head region of the subject, and a lower RF coil array including a third plurality of RF coils extending downward from the central RF coil array and configured to cover an upper shoulder region of the subject, wherein each RF coil of the first, second, and third pluralities of RF coils comprises a loop portion comprising two distributed capacitance wire conductors encapsulated and separated by a dielectric material.
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公开(公告)号：US20200081080A1
公开(公告)日：2020-03-12
申请号：US16129601
申请日：2018-09-12
IPC分类号： G01R33/34 , G01R33/341 , G01R33/385 , G01R33/36
摘要： Various methods and systems are provided for a flexible, lightweight, and low-cost radio frequency (RF) coil of a magnetic resonance imaging (MM) system with reduced power dissipation during decoupling. In one example, the RF coil includes a loop portion with distributed capacitance which comprises two conductor wires encapsulated and separated by a dielectric material and a feed board including a decoupling circuit configured to decouple the distributed capacitance of the loop portion during a transmit operation, an impedance inverter circuit, and a pre-amplifier.
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公开(公告)号：US20190154773A1
公开(公告)日：2019-05-23
申请号：US16191827
申请日：2018-11-15
发明人： Ceara Delmore Stack , Fraser John Laing Robb , Victor Taracila , Robert Steven Stormont , Luke Charles Smith
IPC分类号： G01R33/3415 , G01R33/36 , G01R33/48
摘要： Methods and systems are provided for radio frequency (RF) coils for magnetic resonance imaging (MRI) systems. In one embodiment, a system comprises: a radio frequency (RF) coil array for a magnetic resonance imaging (MRI) system, including: a flexible shell including an inner layer; and a plurality of flexible RF coils embedded within the inner layer, with each RF coil of the plurality of RF coils including two distributed capacitance wire conductors. In this way, the RF coil array may deform in order to conform to a body of a patient.
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公开(公告)号：US10295623B2
公开(公告)日：2019-05-21
申请号：US15337197
申请日：2016-10-28
发明人： Victor Taracila , Fraser Robb , Eddy Boskamp , Daniel Chirayath , Shuying Huang , Madhwesha Rao , James Wild
摘要： An MRI system for imaging one or more subjects is provided. The MRI system includes a magnet assembly and an MRI controller. The magnet assembly includes an RF coil for transmitting a first set of RF pulses into the one or more subjects at an initial Larmor frequency. The MRI controller is configured to electronically communicate with the RF coil and to adjust a resonant frequency of the RF coil such that the RF coil transmits a second set of RF pulses into the one or more subjects at one or more subsequent Larmor frequencies that are different from the initial Larmor frequency.
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公开(公告)号：US10254361B2
公开(公告)日：2019-04-09
申请号：US15268397
申请日：2016-09-16
发明人： Fraser John Laing Robb , Robert Steven Stormont , Youqing Zhang , Victor Taracila , Miguel Angel Navarro, II , Dan Kenrick Spence , Shuying Huang , Peter Roemer
IPC分类号： G01R33/36 , G01R33/341
摘要： Various methods and systems are provided for a disconnecting a receive coil from a transmit coil of a magnetic resonance (MR) system during a transmit operation. In one example, a cabling system may include a first line of coil-interfacing cable having a first set of hybrid switches, the first set of hybrid switches including a first switch, a first resonance circuit, and a second switch connected in series, and a second line of the coil-interfacing cable having a second set of hybrid switches, the first line and the second line of the coil-interfacing cable operably coupling one or more radio frequency (RF) coil elements to respective channels of the MR system. By positioning the first and the second sets of hybrid switches along different locations along the coil-interfacing cables, and simultaneously operating each set of hybrid switches, common mode currents may be interrupted along the coil-interfacing cables.
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公开(公告)号：US20170343628A1
公开(公告)日：2017-11-30
申请号：US15391437
申请日：2016-12-27
IPC分类号： G01R33/36 , G01R33/30 , G01R33/385 , G01R33/54
CPC分类号： G01R33/3685 , G01R33/307 , G01R33/385 , G01R33/543 , G01R33/546
摘要： Various methods and systems are provided for a common mode trap for a magnetic resonance imaging (MRI) apparatus. In one embodiment, a common mode trap comprises: a first conductor and a second conductor counterwound around a length of a central conductor, the first and the second conductors radially spaced a distance from the central conductor, the first and second conductors fixed to a first side of the central conductor; and a third conductor and a fourth conductor counterwound around the length of the central conductor, the third and fourth conductors are radially spaced the distance from the central conductor, the third and fourth conductors fixed to a second side of the central conductor opposite the first side. In this way, the density of common mode trap conductors in a common mode trap may be increased, thereby increasing the mutual inductance between the common mode trap and the central conductor.
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