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1. 发明申请

WO2019226624A1 RADIO-FREQUENCY COIL SIGNAL CHAIN FOR A LOW-FIELD MRI SYSTEM 审中-公开
公开(公告)号：WO2019226624A1
公开(公告)日：2019-11-28
申请号：PCT/US2019/033269
申请日：2019-05-21
申请人： HYPERFINE RESEARCH, INC.
发明人： DYVORNE, Hadrien, A. , REARICK, Todd
IPC分类号： G01R33/34 , G01R33/341 , G01R33/36 , G01R33/44
摘要： Methods and apparatus for reducing noise in RF signal chain circuitry for a low-field magnetic resonance imaging system are provided. A switching circuit in the RF signal chain circuitry may include at least one field effect transistor (FET) configured to operate as an RF switch at an operating frequency of less than 10 MHz. A decoupling circuit may include tuning circuitry coupled across inputs of an amplifier and active feedback circuitry coupled between an output of the amplifier and an input of the amplifier, wherein the active feedback circuitry includes a feedback capacitor configured to reduce a quality factor of an RF coil coupled to the amplifier.

2. 发明申请

WO2018098267A1 PORTABLE LOW-FIELD MAGNETIC RESONANCE IMAGING METHODS AND APPARATUS 审中-公开
公开(公告)号：WO2018098267A1
公开(公告)日：2018-05-31
申请号：PCT/US2017/063000
申请日：2017-11-22
申请人： HYPERFINE RESEARCH, INC. , POOLE, Michael, Stephen , HUGON, Cedric , DYVORNE, Hadrien, A. , REARICK, Todd , SACOLICK, Laura , JORDAN, Jeremy, Christopher , MCNULTY, Christopher, Thomas , ROTHBERG, Jonathan, M. , KATZE, Alan, B. Jr. , MILESKI, William, J.
发明人： POOLE, Michael, Stephen , HUGON, Cedric , DYVORNE, Hadrien, A. , REARICK, Todd , SACOLICK, Laura , JORDAN, Jeremy, Christopher , MCNULTY, Christopher, Thomas , ROTHBERG, Jonathan, M. , KATZE, Alan, B. Jr. , MILESKI, William, J.
IPC分类号： A61B5/055 , G01R33/20 , G01R33/32 , G01R33/34
摘要： According to some aspects, a low-field magnetic resonance imaging system is provided. The low-field magnetic resonance imaging system comprises a magnetics system having a plurality of magnetics components configured to produce magnetic fields for performing magnetic resonance imaging, the magnetics system comprising, a Bo magnet configured to produce a Bo field for the magnetic resonance imaging system at a low-field strength of less than.2 Tesla (T), a plurality of gradient coils configured to, when operated, generate magnetic fields to provide spatial encoding of magnetic resonance signals, and at least one radio frequency coil configured to, when operated, transmit radio frequency signals to a field of view of the magnetic resonance imaging system and to respond to magnetic resonance signals emitted from the field of view, a power system comprising one or more power components configured to provide power to the magnetics system to operate the magnetic resonance imaging system to perform image acquisition, and a power connection configured to connect to a single-phase outlet to receive mains electricity and deliver the mains electricity to the power system to provide power needed to operate the magnetic resonance imaging system. According to some aspects, the power system operates the low-field magnetic resonance imaging system using an average of less than 1.6 kilowatts during image acquisition.

3. 发明申请

WO2016183284A1 RADIO FREQUENCY COIL METHODS AND APPARATUS 审中-公开
标题翻译：无线电频率线圈方法和装置
公开(公告)号：WO2016183284A1
公开(公告)日：2016-11-17
申请号：PCT/US2016/032014
申请日：2016-05-12
申请人： HYPERFINE RESEARCH, INC.
发明人： POOLE, Michael, Stephen , CHARVAT, Gregory, L. , REARICK, Todd , ROTHBERG, Jonathan, M.
IPC分类号： A61B5/055 , G01R33/20 , G01R33/32 , G01R33/34
CPC分类号： A61B5/7203 , A61B5/0042 , A61B5/055 , A61B5/725 , G01R33/34007 , G01R33/34046 , G01R33/381
摘要： Aspects relate to providing radio frequency components responsive to magnetic resonance signals. According to some aspects, a radio frequency component comprises at least one coil having a conductor arranged in a plurality of turns oriented about a region of interest to respond to corresponding magnetic resonant signal components. According to some aspects, the radio frequency component comprises a plurality of coils oriented to respond to corresponding magnetic resonant signal components. According to some aspects, an optimization is used to determine a configuration for at least one radio frequency coil.
摘要翻译：方面涉及提供响应于磁共振信号的射频分量。根据一些方面，射频分量包括至少一个线圈，其具有以围绕感兴趣区域定向的多个匝布置的导体，以响应相应的磁共振信号分量。根据一些方面，射频分量包括多个线圈，其被定向以对应于相应的磁共振信号分量。根据一些方面，使用优化来确定至少一个射频线圈的配置。

4. 发明申请

WO2016037030A1 AUTOMATIC CONFIGURATION OF A LOW FIELD MAGNETIC RESONANCE IMAGING SYSTEM 审中-公开
标题翻译：低场磁共振成像系统的自动配置
公开(公告)号：WO2016037030A1
公开(公告)日：2016-03-10
申请号：PCT/US2015/048484
申请日：2015-09-04
申请人： HYPERFINE RESEARCH, INC.
发明人： ROTHBERG, Jonathan, M. , JORDAN, Jeremy, Christopher , POOLE, Michael, Stephen , SACOLICK, Laura , REARICK, Todd , CHARVAT, Gregory, L.
IPC分类号： G01R33/381 , G01R33/383
CPC分类号： G01R33/5608 , G01R33/28 , G01R33/34007 , G01R33/36 , G01R33/3614 , G01R33/38 , G01R33/3802 , G01R33/3804 , G01R33/3806 , G01R33/381 , G01R33/383 , G01R33/385 , G01R33/3852 , G01R33/3854 , G01R33/3856 , G01R33/3858 , G01R33/3875 , G01R33/422 , G01R33/445 , G01R33/48 , G01R33/543 , G01R33/546 , G01R33/56 , G01R33/56518 , G01R33/58 , H01F7/02 , H01F7/06
摘要： In some aspects, a method of operating a magnetic resonance imaging system comprising a B 0 magnet and at least one thermal management component configured to transfer heat away from the B 0 magnet during operation is provided. The method comprises providing operating power to the B 0 magnet, monitoring a temperature of the B 0 magnet to determine a current temperature of the B 0 magnet, and operating the at least one thermal management component at less than operational capacity in response to an occurrence of at least one event.
摘要翻译：在一些方面，提供一种操作磁共振成像系统的方法，所述磁共振成像系统包括B0磁体和至少一个配置成在操作期间将热量从B0磁体传送出去的热管理部件。该方法包括向B0磁体提供工作电力，监测B0磁体的温度以确定B0磁体的当前温度，以及响应于至少发生的至少一个操作能力操作至少一个热管理部件一个事件

5. 发明申请

WO2016037042A1 FERROMAGNETIC AUGMENTATION FOR MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：磁共振成像的磁共振成像
公开(公告)号：WO2016037042A1
公开(公告)日：2016-03-10
申请号：PCT/US2015/048515
申请日：2015-09-04
申请人： HYPERFINE RESEARCH, INC.
发明人： POOLE, Michael, Stephen , REARICK, Todd , ROTHBERG, Jonathan, M.
IPC分类号： G01R33/381 , G01R33/383
CPC分类号： G01R33/5608 , G01R33/28 , G01R33/34007 , G01R33/36 , G01R33/3614 , G01R33/38 , G01R33/3802 , G01R33/3804 , G01R33/3806 , G01R33/381 , G01R33/383 , G01R33/385 , G01R33/3852 , G01R33/3854 , G01R33/3856 , G01R33/3858 , G01R33/3875 , G01R33/422 , G01R33/445 , G01R33/48 , G01R33/543 , G01R33/546 , G01R33/56 , G01R33/56518 , G01R33/58 , H01F7/02 , H01F7/06
摘要： In some aspects, a magnetic system for use in a low-field MRI system. The magnetic system comprises at least one electromagnet configured to, when operated, generate a magnetic field to contribute to a B 0 field for the low-field MRI system, and at least one permanent magnet to produce a magnetic field to contribute to the B 0 field.
摘要翻译：在一些方面，用于低场MRI系统的磁系统。所述磁系统包括至少一个电磁体，所述至少一个电磁体被配置为当操作时产生磁场以有助于低场MRI系统的B0场，以及至少一个永久磁铁产生磁场以有助于B0场。

6. 发明申请

WO2016037028A1 NOISE SUPPRESSION METHODS AND APPARATUS 审中-公开
标题翻译：噪声抑制方法和装置
公开(公告)号：WO2016037028A1
公开(公告)日：2016-03-10
申请号：PCT/US2015/048479
申请日：2015-09-04
申请人： HYPERFINE RESEARCH, INC.
发明人： REARICK, Todd , CHARVAT, Gregory, L. , ROSEN, Matthew, Scot , ROTHBERG, Jonathan, M.
IPC分类号： G01R33/381 , G01R33/383
CPC分类号： G01R33/5608 , G01R33/28 , G01R33/34007 , G01R33/36 , G01R33/3614 , G01R33/38 , G01R33/3802 , G01R33/3804 , G01R33/3806 , G01R33/381 , G01R33/383 , G01R33/385 , G01R33/3852 , G01R33/3854 , G01R33/3856 , G01R33/3858 , G01R33/3875 , G01R33/422 , G01R33/445 , G01R33/48 , G01R33/543 , G01R33/546 , G01R33/56 , G01R33/56518 , G01R33/58 , H01F7/02 , H01F7/06
摘要： According to some aspects, a method of suppressing noise in an environment of a magnetic resonance imaging system is provided. The method comprising estimating a transfer function based on multiple calibration measurements obtained from the environment by at least one primary coil and at least one auxiliary sensor, respectively, estimating noise present in a magnetic resonance signal received by the at least one primary coil based at least in part on the transfer function, and suppressing noise in the magnetic resonance signal using the noise estimate.
摘要翻译：根据一些方面，提供了一种在磁共振成像系统的环境中抑制噪声的方法。该方法包括基于通过至少一个初级线圈和至少一个辅助传感器从环境获得的多个校准测量值来估计传递函数，所述至少一个初级线圈和至少一个辅助传感器至少估计由至少一个初级线圈接收的磁共振信号中存在的噪声部分地在传递函数上，并且使用噪声估计来抑制磁共振信号中的噪声。

7. 发明申请

WO2016037025A1 LOW FIELD MAGNETIC RESONANCE IMAGING METHODS AND APPARATUS 审中-公开
标题翻译：低场磁共振成像方法和装置
公开(公告)号：WO2016037025A1
公开(公告)日：2016-03-10
申请号：PCT/US2015/048470
申请日：2015-09-04
申请人： HYPERFINE RESEARCH, INC.
发明人： ROTHBERG, Jonathan, M. , ROSEN, Matthew, Scot , CHARVAT, Gregory, L. , MILESKI, William, J. , REARICK, Todd , POOLE, Michael, Stephen
IPC分类号： G01R33/381 , G01R33/383 , H01F17/00
CPC分类号： G01R33/5608 , G01R33/28 , G01R33/34007 , G01R33/36 , G01R33/3614 , G01R33/38 , G01R33/3802 , G01R33/3804 , G01R33/3806 , G01R33/381 , G01R33/383 , G01R33/385 , G01R33/3852 , G01R33/3854 , G01R33/3856 , G01R33/3858 , G01R33/3875 , G01R33/422 , G01R33/445 , G01R33/48 , G01R33/543 , G01R33/546 , G01R33/56 , G01R33/56518 , G01R33/58 , H01F7/02 , H01F7/06
摘要： According to some aspects, a laminate panel is provided. The laminate panel comprises at least one laminate layer including at least one non-conductive layer and at least one conductive layer patterned to form at least a portion of a B 0 coil configured to contribute to a B 0 field suitable for use in low-field magnetic resonance imaging (MRI).
摘要翻译：根据一些方面，提供了层压板。层压板包括至少一层层压层，其包括至少一层非导电层和至少一层图案化的导电层，以形成B0线圈的至少一部分，该B0线圈配置为有助于适用于低场磁共振的B0场成像（MRI）。

8. 发明申请

WO2018064485A1 RADIO FREQUENCY COIL TUNING METHODS AND APPARATUS 审中-公开
标题翻译：射频线圈调谐方法和设备
公开(公告)号：WO2018064485A1
公开(公告)日：2018-04-05
申请号：PCT/US2017/054316
申请日：2017-09-29
申请人： HYPERFINE RESEARCH, INC.
发明人： REARICK, Todd , JORDAN, Jeremy, Christopher , CHARVAT, Gregory, L. , ROSEN, Matthew, Scot
IPC分类号： G01R33/025 , G01R33/20 , G01R33/32 , G01R33/36 , G01R33/58 , H03J3/12 , H03J3/24 , H01F7/02
摘要： Some aspects comprise a tuning system configured to tune a radio frequency coil for use with a magnetic resonance imaging system comprising a tuning circuit including at least one tuning element configured to affect a frequency at which the radio frequency coil resonates, and a controller configured to set at least one value for the tuning element to cause the radio frequency coil to resonate at approximately a Larmor frequency of the magnetic resonance imaging system determined by the tuning system. Some aspects include a method of automatically tuning a radio frequency coil comprising determining information indicative of a Larmor frequency of the magnetic resonance imaging system, using a controller to automatically set at least one value of a tuning circuit to cause the radio frequency coil to resonate at approximately the Larmor frequency based on the determined information.
摘要翻译：一些方面包括调谐系统，其被配置为调谐射频线圈以用于与包括调谐电路的磁共振成像系统一起使用，该调谐电路包括至少一个调谐元件，该调谐元件被配置为影响射频线圈以及控制器，其被配置为设置用于调谐元件的至少一个值以使得射频线圈以近似调谐系统确定的磁共振成像系统的拉莫尔频率谐振。一些方面包括一种自动调谐射频线圈的方法，该方法包括：使用控制器自动设置调谐电路的至少一个值以使射频线圈在以下位置处共振，所述方法包括确定指示磁共振成像系统的拉莫尔频率的信息大约基于确定的信息的拉莫尔频率。

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