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公开(公告)号：US11419516B2
公开(公告)日：2022-08-23
申请号：US16551011
申请日：2019-08-26
IPC分类号： A61B5/05 , A61B5/055 , A61B5/11 , A61B5/113 , G01R33/341 , G01R33/567 , G01R33/36
摘要： A table for an MRI system includes a top surface for supporting a patient being imaged and a motion sensor for sensing motion of the patient. The motion sensor is located below the top surface and includes a self-resonant spiral (SRS) coil and a coupling loop. The coupling loop generates a drive RF signal to excite the SRS coil to radiate a magnetic field having a predefined resonant frequency. The coupling loop also receives a reflection RF signal from the SRS coil. The motion sensor is located such that at least a portion of a torso of the patient being imaged is within the magnetic field. A controller is configured to detect patient motion based on the reflection RF signal.
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公开(公告)号：US20210059555A1
公开(公告)日：2021-03-04
申请号：US16551011
申请日：2019-08-26
摘要： A table for an MRI system includes a top surface for supporting a patient being imaged and a motion sensor for sensing motion of the patient. The motion sensor is located below the top surface and includes a self-resonant spiral (SRS) coil and a coupling loop. The coupling loop generates a drive RF signal to excite the SRS coil to radiate a magnetic field having a predefined resonant frequency. The coupling loop also receives a reflection RF signal from the SRS coil. The motion sensor is located such that at least a portion of a torso of the patient being imaged is within the magnetic field. A controller is configured to detect patient motion based on the reflection RF signal.
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公开(公告)号：US11519979B2
公开(公告)日：2022-12-06
申请号：US16287854
申请日：2019-02-27
发明人： Hilary Shuo Qin , Eduardo De Leon , Fraser John Laing Robb , Andrea Nicole Sajewski , Ceara Delmore Stack , Louis Jay Vannatta , Mark Giancola , Victor Taracila
IPC分类号： A61B5/055 , G01R33/3415 , G01R33/34
摘要： Various systems and methods are provided for radio frequency coil assemblies for a magnetic resonance imaging system. In one example, a method comprises: flowing air through a plurality of airflow passages formed in a radio frequency (RF) coil assembly for a magnetic resonance imaging (MRI) system; and receiving magnetic resonance (MR) signals from an RF coil array of the RF coil assembly, wherein the RF coil array comprises a plurality of RF coil elements, each RF coil element having a loop portion which comprises two distributed capacitance wire conductors encapsulated and separated by a dielectric material.
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公开(公告)号：US20220361767A1
公开(公告)日：2022-11-17
申请号：US17868985
申请日：2022-07-20
IPC分类号： A61B5/055 , G01R33/341
摘要： A magnetic resonance imaging system includes a bore, a table configured to support a patient being imaged and movable to move the patient in and out of the bore, a motion sensor, a controller configured to detect patient motion based on changes in an RF signal from the motion sensor. The motion sensor includes a self-resonant spiral (SRS) coil excited by a drive signal to radiate a magnetic field having a predefined resonant frequency and a driver-receiver coupled to the SRS coil and configured to generate the drive signal to excite the SRS coil and to receive the RF signal from the SRS coil. The motion sensor is located such that a portion of the patient is within the magnetic field while the patient is being imaged in the bore.
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公开(公告)号：US20200271738A1
公开(公告)日：2020-08-27
申请号：US16287854
申请日：2019-02-27
发明人： Hilary Shuo Qin , Eduardo De Leon , Fraser John Laing Robb , Andrea Nicole Sajewski , Ceara Delmore Stack , Louis Jay Vannatta , Mark Giancola , Victor Taracila
IPC分类号： G01R33/34 , G01R33/3415 , A61B5/055
摘要： Various systems and methods are provided for radio frequency coil assemblies for a magnetic resonance imaging system. In one example, a method comprises: flowing air through a plurality of airflow passages formed in a radio frequency (RF) coil assembly for a magnetic resonance imaging (MRI) system; and receiving magnetic resonance (MR) signals from an RF coil array of the RF coil assembly, wherein the RF coil array comprises a plurality of RF coil elements, each RF coil element having a loop portion which comprises two distributed capacitance wire conductors encapsulated and separated by a dielectric material.
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