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    MAGNETIC RESONANCE IMAGING (MRI) COIL USING TRANSMISSION LINES TO ENFORCE PERIODIC CONDITIONS FOR RESONANCE
    41.
    发明申请
    MAGNETIC RESONANCE IMAGING (MRI) COIL USING TRANSMISSION LINES TO ENFORCE PERIODIC CONDITIONS FOR RESONANCE 审中-公开

    公开(公告)号：US20200150200A1

    公开(公告)日：2020-05-14

    申请号：US16679477

    申请日：2019-11-11

    申请人： Quality Electrodynamics, LLC

    发明人： Xiaoyu Yang ,  Tsinghua Zheng ,  Haoqin Zhu

    IPC分类号： G01R33/36 ,  G01R33/34

    摘要： Embodiments relate to MRI coils and arrays comprising transmission lines to enforce periodic conditions. An example embodiment comprises a MRI RF coil array comprising: a plurality of assemblies, wherein each assembly of the plurality of assemblies comprises: a two-port device of that assembly, wherein the two-port device of that assembly is similar to the two-port device of each other assembly of the plurality of assemblies, and wherein the two-port device of that assembly comprises at least one associated inductor configured to, in a Tx mode, generate at least a portion of a B1 field; and a transmission line of that assembly, wherein a length of the transmission line of that assembly can be similar to a length of the transmission line of each other assembly of the plurality of assemblies, wherein the plurality of assemblies are connected together in a loop.

    MULTI-TURN MAGNETIC RESONANCE IMAGING (MRI) ARRAY COIL WITH RING DECOUPLING FOR IMPROVED COIL ISOLATION
    43.
    发明申请
    MULTI-TURN MAGNETIC RESONANCE IMAGING (MRI) ARRAY COIL WITH RING DECOUPLING FOR IMPROVED COIL ISOLATION 审中-公开

    公开(公告)号：US20190257897A1

    公开(公告)日：2019-08-22

    申请号：US16266346

    申请日：2019-02-04

    申请人： Quality Electrodynamics, LLC

    发明人： Xiaoyu Yang ,  Haoqin Zhu ,  Tsinghua Zheng

    IPC分类号： G01R33/36 ,  G01R33/34 ,  A61B5/055

    摘要： Embodiments relate to multi-turn magnetic resonance imaging (MRI) radio frequency (RF) coil arrays employing ring decoupling, and MRI apparatuses employing such coil arrays. One example embodiment comprises: four or more RF coil elements that enclose a cylindrical axis, wherein each RF coil element comprises a first capacitor of that RF coil element and a loop comprising at least two turns; and a ring structure that facilitates decoupling of the RF coil elements, wherein each RF coil element is adjacent to two neighboring RF coil elements and is non-adjacent to one or more other coil elements, wherein each RF coil element has a shared side in common with the ring structure, wherein the shared side comprises a second capacitor of that RF coil element with a capacitance selected to mitigate inductive coupling between that RF coil element and non-adjacent RF coil elements.

    HIDDEN COIL TRANSMISSION LINES IN MAGNETIC RESONANCE IMAGING (MRI) COIL
    44.
    发明申请
    HIDDEN COIL TRANSMISSION LINES IN MAGNETIC RESONANCE IMAGING (MRI) COIL 审中-公开

    公开(公告)号：US20190187227A1

    公开(公告)日：2019-06-20

    申请号：US16218609

    申请日：2018-12-13

    申请人： Quality Electrodynamics, LLC

    发明人： Xiaoyu Yang ,  Tsinghua Zheng ,  Haoqin Zhu

    IPC分类号： G01R33/36 ,  G01R33/341

    CPC分类号： G01R33/3628 ,  G01R33/34007 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3685

    摘要： Embodiments relate to magnetic resonance imaging (MRI) radio frequency (RF) coil arrays having reduced coupling via hidden transmission lines. One example embodiment comprises a MRI RF coil array comprising: a first RF coil element coupled to a first output transmission cable (e.g., coaxial) that is configured to carry a first signal that is associated with the first RF coil element; a second RF coil element coupled to a second output transmission cable that is configured to carry a second signal that is associated with the second RF coil element, wherein the second RF coil element comprises a first portion of the first output transmission cable; and a first balun configured to reduce coupling associated with the first signal, wherein the first balun is arranged between the first RF coil element and the second RF coil element. Additional coil elements can be similarly combined in embodiments.

    SINGLE LAYER MAGNETIC RESONANCE IMAGING (MRI) TRANSMIT/RECEIVE (TX/RX) RADIO FREQUENCY (RF) COIL WITH INTEGRATED SHIMMING
    45.
    发明申请
    SINGLE LAYER MAGNETIC RESONANCE IMAGING (MRI) TRANSMIT/RECEIVE (TX/RX) RADIO FREQUENCY (RF) COIL WITH INTEGRATED SHIMMING 审中-公开

    公开(公告)号：US20180313918A1

    公开(公告)日：2018-11-01

    申请号：US15964390

    申请日：2018-04-27

    申请人： Quality Electrodynamics, LLC

    发明人： Xiaoyu Yang ,  Haoqin Zhu ,  Tsinghua Zheng ,  Labros Petropoulos

    IPC分类号： G01R33/36 ,  G01R33/3875 ,  G01R33/34

    摘要： A single-layer magnetic resonance imaging (MRI) radio frequency (RF) coil array configured to operate in a transmit (Tx) mode or in a receive (Rx) mode comprises at least one single-layer MRI RF coil array element configured to provide integrated B0 field shimming. The at least one single-layer MRI RF coil array element includes a resonant LC coil, a matching Tx/Rx switch circuit, a magnitude/phase control component, and a preamplifier. The LC coil, upon resonating with a primary coil at the working frequency, generates a local amplified Tx field based on an induced current in the LC coil. The magnitude/phase control component is configured to independently adjust a magnitude or a phase of the induced current. The at least one single-layer MRI RF coil element may include a Tx field monitoring component configured to monitor the strength or phase of the local amplified Tx field.

    SINGLE LAYER MAGNETIC RESONANCE IMAGING TRANSMIT/RECEIVE RADIO FREQUENCY COIL FOR DIFFERENT ANATOMIES
    46.
    发明申请
    SINGLE LAYER MAGNETIC RESONANCE IMAGING TRANSMIT/RECEIVE RADIO FREQUENCY COIL FOR DIFFERENT ANATOMIES 审中-公开

    公开(公告)号：US20180275233A1

    公开(公告)日：2018-09-27

    申请号：US15933860

    申请日：2018-03-23

    申请人： Quality Electrodynamics, LLC

    发明人： Xiaoyu Yang ,  Tsinghua Zheng ,  Haoqin Zhu

    IPC分类号： G01R33/36 ,  G01R33/34 ,  G01R33/341

    CPC分类号： G01R33/3628 ,  G01R33/34046 ,  G01R33/341 ,  G01R33/3415

    摘要： A magnetic resonance imaging (MRI) radio frequency (RF) coil array configured to operate in a transmit (Tx) mode or in a receive (Rx) mode, comprising: a plurality of rows configured in an anatomy-specific shape, a row including a plurality of RF coil elements, an RF coil element including an LC coil and a magnitude/phase control component, where the LC coil, upon resonating with a primary coil at the working frequency of the primary coil, generates a local amplified Tx field based on an induced current in the LC coil, where a magnitude or a phase of the induced current is independently adjustable, where the magnitude/phase control component is configured to adjust the magnitude or phase of the induced current, and where the magnitude or phase of the induced current of a first RF coil element is independently adjustable from that of a second, different RF coil element.

    RADIO FREQUENCY (RF) TRANSMIT SYSTEM FOR DIGITAL RF CURRENT SOURCE
    47.
    发明申请
    RADIO FREQUENCY (RF) TRANSMIT SYSTEM FOR DIGITAL RF CURRENT SOURCE 审中-公开

    公开(公告)号：US20180081004A1

    公开(公告)日：2018-03-22

    申请号：US15708620

    申请日：2017-09-19

    申请人： Quality Electrodynamics, LLC

    发明人： Xiaoyu Yang

    IPC分类号： G01R33/36 ,  H03F3/217

    CPC分类号： G01R33/3614 ,  G01R33/3415 ,  G01R33/3607 ,  G01R33/3628 ,  H03F3/217 ,  H03F3/2175

    摘要： Example embodiments include a radio frequency (RF) transmit system for a digital RF current source, the system including a magnetic resonance imaging (MRI) system control console operably connected to at least one digital RF current source amplifier. The at least one digital RF current source amplifier is operably connected to an RF transmission coil. The MRI system control console provides a digital control signal to the at least one digital RF current source amplifier. The MRI system control console provides a master RF current source clock signal to the at least one digital RF current source amplifier. The digital RF current source amplifier provides an alternating current to the RF transmission coil.

    DECOUPLED MRI COILS THROUGH COIL MATCHING
    50.
    发明申请
    DECOUPLED MRI COILS THROUGH COIL MATCHING 有权

    公开(公告)号：US20230121039A1

    公开(公告)日：2023-04-20

    申请号：US17503655

    申请日：2021-10-18

    申请人： Quality Electrodynamics, LLC

    发明人： Xiaoyu Yang ,  Tsinghua Zheng ,  Thomas Eastlake ,  Mathew Finnerty

    IPC分类号： G01R33/36

    摘要： The present disclosure relates to a magnetic resonance imaging (MRI) radio frequency (RF) array coil that includes first and second physical RF coils inductively coupled. A first matching circuit and a second matching circuit are coupled to the first physical RF coil and the second physical RF coil, respectively, and are coupled in a parallel configuration at a first RF port. A third matching circuit and a fourth matching circuit are coupled to the first physical RF coil and the second physical RF coil, respectively, and are coupled in an anti-parallel configuration at a second RF port. A first logical RF coil is formed by the first and second physical RF coils and the first and second matching circuits. A second logical RF coil, which is decoupled from the first logical RF coil, is formed by the first and second physical RF coils and the third and fourth matching circuits.