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215 条记录 (耗时 0.037 秒)

    LOW-NOISE RF DETECTION AND ACQUISITION SYSTEM BASED ON SQUID AND EQUIPMENT ITEMS INCLUDING THIS SYSTEM
    1.
    发明公开
    LOW-NOISE RF DETECTION AND ACQUISITION SYSTEM BASED ON SQUID AND EQUIPMENT ITEMS INCLUDING THIS SYSTEM 审中-公开

    公开(公告)号：US20240045005A1

    公开(公告)日：2024-02-08

    申请号：US18255967

    申请日：2021-12-02

    申请人： Chipiron

    发明人： Dimitri Labat

    IPC分类号： G01R33/32 ,  G01R33/34 ,  G01V3/12 ,  A61B5/245 ,  A61B5/05

    CPC分类号： G01R33/326 ,  G01R33/34 ,  G01R33/34061 ,  G01V3/12 ,  A61B5/245 ,  A61B5/05

    摘要： A radiofrequency detection and acquisition system, which is based on SQUID and configured to be integrated into a nuclear magnetic resonance system, comprises a primary detection antenna, a flux transformer having an inlet winding connected to the primary detection antenna, a low critical temperature SQUID device for capturing the magnetic flux produced by an outlet winding of the flux transformer and supplying a secondary detection signal, a cryogenic device for cooling the SQUID device and the flux transformer, and means for processing the secondary detection signal emitted by the SQUID device to supply an analogue acquisition signal. The primary detection antenna may be of the volume type, comprising Helmholtz coils or saddle coils, or a more complex volume geometry, particularly gradiometric geometry. The means for processing the secondary detection signal may comprise a flux-locked loop, provided to linearize the response of the SQUID device.

    Method and apparatus for magnetic resonance imaging of the cranio-cervical junction
    2.
    发明授权
    Method and apparatus for magnetic resonance imaging of the cranio-cervical junction 有权

    公开(公告)号：US09766310B1

    公开(公告)日：2017-09-19

    申请号：US14209279

    申请日：2014-03-13

    申请人： Fonar Corporation

    发明人： Raymond V. Damadian ,  Charles A. Green

    IPC分类号： G01R33/36 ,  G01R33/30

    CPC分类号： G01R33/307 ,  G01R33/34007 ,  G01R33/34046 ,  G01R33/34053 ,  G01R33/34061 ,  G01R33/3678 ,  G01R33/3806 ,  G01R33/543

    摘要： The disclosure of the present invention provides for an imaging apparatus and methods for imaging the cranio-cervical junction of a patient using magnetic resonance. The apparatus is adapted to slide over the patient's head, and includes a saddle element and a solenoid element. The saddle element has a length that extends along a superior-inferior axis of the patient, and a circumference along an axial plane of the patient when the apparatus is slid over the patient's head, so as to define a substantially cylindrical volume. The solenoid element attaches to the saddle element at about a midpoint of the saddle element's length, so as to be positioned along an axial plane of the patient when the apparatus is slid over the patient's head. This configuration allows for the cranio-cervical junction of the patient to be positioned in the cylindrical volume when the apparatus is slid over the patient's head.

    Multiple resonance sample coil for magic angle spinning NMR probe
    3.
    发明授权
    Multiple resonance sample coil for magic angle spinning NMR probe 有权
    用于魔角旋转NMR探头的多重共振采样线圈

    公开(公告)号：US09411028B2

    公开(公告)日：2016-08-09

    申请号：US13447189

    申请日：2012-04-14

    申请人： Wurong Zhang ,  Michael Fey ,  Peter Gor'kov

    发明人： Wurong Zhang ,  Michael Fey ,  Peter Gor'kov

    IPC分类号： G01R33/34 ,  G01R33/36

    CPC分类号： G01R33/34092 ,  G01R33/34053 ,  G01R33/34061 ,  G01R33/34076 ,  G01R33/3635

    摘要： A multiple resonance sample coil for a magic angle spinning nuclear magnetic resonance probe is comprised of a solenoid coil that resonates at low frequencies and a resonator that resonates at high frequencies. The ends of the low frequency solenoid coil are electrically connected to the high frequency resonator to eliminate arcing and allow the solenoid coil to extend the full width of the resonator. In some embodiments, the high frequency resonator is constructed from the outermost turns of the solenoid coil in the form of a birdcage resonator. In another embodiment, the solenoid coil is electrically connected to one turn of the resonator and the other turn is used as part of a trap to shunt the resonator at low frequencies.

    摘要翻译： 用于魔角旋转核磁共振探测器的多重谐振采样线圈由在低频谐振的螺线管线圈和在高频下共振的谐振器构成。 低频螺线管线圈的端部电连接到高频谐振器以消除电弧并允许螺线管线圈延伸谐振器的全部宽度。 在一些实施例中，高频谐振器由鸟笼式谐振器形式的螺线管线圈的最外圈构成。 在另一个实施例中，螺线管线圈电连接到谐振器的一匝，而另一匝用作陷波器的一部分以在低频下分流谐振器。

    METHOD AND SYSTEM FOR INSPECTION OF COMPOSITE MATERIAL COMPONENTS
    4.
    发明申请
    METHOD AND SYSTEM FOR INSPECTION OF COMPOSITE MATERIAL COMPONENTS 审中-公开
    用于检查复合材料组分的方法和系统

    公开(公告)号：US20150301139A1

    公开(公告)日：2015-10-22

    申请号：US14377349

    申请日：2013-02-05

    申请人： ANATECH ADVANCED NMR ALORITHMS TECHNOLOGIES LTD.

    发明人： Alexander SHAMES ,  Yuri ROZENFELD ,  David KEINI

    IPC分类号： G01R33/56 ,  G01R33/3875 ,  G01R33/385 ,  G01R33/34

    CPC分类号： G01R33/5602 ,  G01N24/08 ,  G01R33/34061 ,  G01R33/383 ,  G01R33/3856 ,  G01R33/3875

    摘要： A non-destructive inspection of epoxy-based objects by creating a substantially uniform magnetic field of about 0.1 to 0.5 Tesla within a magnetic field region at least partially overlapping with a test zone where the inspected object is to be located, applying electromagnetic excitation signals in the test site to affect the nuclei magnetization in the inspected object and concurrently generating magnetic gradients in three orthogonal directions thereinside, to thereby cause spatially resolved nuclear spin echo signals from the inspected object. Data corresponding to electromagnetic radiation received responsive to the nuclear spin echo signals from the inspected object is processed to extract data indicative of the spatially resolved nuclear spin echo signals from the inspected object, and magnetic resonance images indicative of structural defects in the object are then generated using the extracted data.

    摘要翻译： 通过在与要被检查对象的测试区域至少部分重叠的磁场区域内产生约0.1至0.5特斯拉的基本均匀的磁场，对环氧基物体进行非破坏性检查，将电磁激励信号施加在 该测试部位影响检查对象中的核磁化强度，同时在其内侧的三个正交方向上同时产生磁梯度，从而引起来自检查对象的空间分辨的核自旋回波信号。 处理对应于响应来自检查对象的核自旋回波信号的电磁辐射的数据，以提取表示来自被检查物体的空间分辨的核自旋回波信号的数据，然后产生指示对象中的结构缺陷的磁共振图像 使用提取的数据。

    Magnetic resonance coil device
    6.
    发明授权
    Magnetic resonance coil device 有权
    磁共振线圈装置

    公开(公告)号：US08952694B2

    公开(公告)日：2015-02-10

    申请号：US13092841

    申请日：2011-04-22

    申请人： Stephan Biber ,  Daniel Driemel

    发明人： Stephan Biber ,  Daniel Driemel

    IPC分类号： G01R33/32 ,  G01R33/34 ,  G01R33/3415

    CPC分类号： G01R33/34084 ,  G01R33/34007 ,  G01R33/34061 ,  G01R33/3415

    摘要： A combined head and nape magnetic-resonance coil device for a magnetic-resonance examination using a magnetic-resonance device, includes at least one posterior coil unit and at least two anterior coil units. At least one anterior coil unit of the at least two anterior coil units is mounted in relation to the posterior coil unit such that the at least one anterior coil unit may move along at least one direction of a spacing between the posterior coil unit and the at least one anterior coil unit.

    摘要翻译： 一种用于使用磁共振装置的磁共振检查的组合的头和磁盘磁共振线圈装置，包括至少一个后线圈单元和至少两个前线圈单元。 所述至少两个前线圈单元中的至少一个前线圈单元相对于所述后线圈单元安装，使得所述至少一个前线圈单元可以沿着所述后线圈单元和所述后线圈单元之间的间隔的至少一个方向移动 至少一个前线圈单元。

    High temperature superconductor receiver coil magnetic resonance imaging systems and methods compatible with an infant incubator
    8.
    发明授权
    High temperature superconductor receiver coil magnetic resonance imaging systems and methods compatible with an infant incubator 有权
    高温超导体接收器线圈磁共振成像系统和方法与婴儿培养箱兼容

    公开(公告)号：US08410781B1

    公开(公告)日：2013-04-02

    申请号：US12825165

    申请日：2010-06-28

    申请人： Edward S. Yang ,  Geng Li ,  Frederick Cheng

    发明人： Edward S. Yang ,  Geng Li ,  Frederick Cheng

    IPC分类号： G01V3/00 ,  A61B5/05

    CPC分类号： A61B5/055 ,  A61B2503/045 ,  A61G11/00 ,  A61G2210/50 ,  G01R33/34023 ,  G01R33/3403 ,  G01R33/34061

    摘要： Systems and methods which employ a high temperature superconductor (HTS) receiver coil configuration for MRI analysis of small volume subjects, such as infants, are shown. Embodiments provide a HTS tape RF phase array receiver coil implementation. The foregoing HTS tape receiver coil implementation may be provided in a Helmholtz coil configuration. With such a Helmholtz coil configuration, circuitry is preferably provided to provide tuning, matching, and/or decoupling with respect to the HTS receiver coils. Embodiments implement a cryostat configuration to maintain one or more HTS receiver coils at a desired operating temperature (e.g., ≦77° K) while providing a safe environment for a subject (e.g., infant) being imaged.

    摘要翻译： 示出了采用高温超导体（HTS）接收器线圈配置用于诸如婴儿等小体积对象的MRI分析的系统和方法。 实施例提供了HTS磁带RF相位阵列接收器线圈实现。 上述HTS磁带接收器线圈实现可以以亥姆霍兹线圈配置来提供。 利用这样的亥姆霍兹线圈配置，优选地提供电路以提供关于HTS接收器线圈的调谐，匹配和/或去耦。 实施例实施低温恒温器配置以将一个或多个HTS接收器线圈保持在期望的工作温度（例如，＆lt; 77°K），同时为被成像的对象（例如，婴儿）提供安全的环境。

    NMR device for detection of analytes
    9.
    发明授权
    NMR device for detection of analytes 有权
    用于检测分析物的NMR装置

    公开(公告)号：US08334693B2

    公开(公告)日：2012-12-18

    申请号：US12844672

    申请日：2010-07-27

    申请人： W. David Lee

    发明人： W. David Lee

    IPC分类号： G01V3/00

    CPC分类号： G01R33/302 ,  G01N24/08 ,  G01N24/088 ,  G01R33/281 ,  G01R33/285 ,  G01R33/34007 ,  G01R33/34053 ,  G01R33/34061 ,  G01R33/34069 ,  G01R33/34084 ,  G01R33/341 ,  G01R33/44 ,  G01R33/465 ,  G01R33/5601

    摘要： This invention relates generally to detection devices having one or more small wells each surrounded by, or in close proximity to, an NMR micro coil, each well containing a liquid sample with magnetic nanoparticles that self-assemble or disperse in the presence of a target analyte, thereby altering the measured NMR properties of the liquid sample. The device may be used, for example, as a portable unit for point of care diagnosis and/or field use, or the device may be implanted for continuous or intermittent monitoring of one or more biological species of interest in a patient.

    摘要翻译： 本发明一般涉及一种具有一个或多个小孔的检测装置，每个小孔由NMR微线圈包围或非常接近，每个孔含有具有磁性纳米颗粒的液体样品，其在目标分析物存在下自组装或分散 ，从而改变液体样品的NMR测定性质。 该装置可以例如用作用于点护理诊断和/或野外使用的便携式单元，或者该装置可被植入用于连续或间歇地监测患者感兴趣的一种或多种生物物种。