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    • 101. 发明申请
    • Radio frequency magnetic field unit
    • 射频磁场单位
    • US20020070828A1
    • 2002-06-13
    • US09919479
    • 2001-07-31
    • J. Thomas VaughanGregor AdrianyKamil Ugurbil
    • H01F001/00
    • G01R33/34046G01R33/3453
    • An apparatus comprises a radio frequency magnetic field unit to generate a desired magnetic field. In one embodiment, the radio frequency magnetic field unit includes a first aperture that is substantially unobstructed and a second aperture contiguous to the first aperture. In an alternative embodiment, the radio frequency magnetic field unit includes a first side aperture, a second side aperture and one or more end apertures. In one embodiment of a method, a current element is removed from a radio frequency magnetic field unit to form a magnetic field unit having an aperture. In an alternative embodiment, two current elements located opposite from one another in a radio frequency magnetic field unit are removed to form a magnetic filed unit having a first side aperture and a second side aperture.
    • 一种装置包括用于产生期望磁场的射频磁场单元。 在一个实施例中,射频磁场单元包括基本无障碍的第一孔和与第一孔邻接的第二孔。 在替代实施例中,射频磁场单元包括第一侧孔,第二侧孔和一个或多个端孔。 在一种方法的一个实施例中,从射频磁场单元移除电流元件以形成具有孔径的磁场单元。 在替代实施例中,移除在射频磁场单元中彼此相对定位的两个电流元件,以形成具有第一侧孔和第二侧孔的磁场单元。
    • 102. 发明申请
    • Superconducting birdcage coils
    • 超导鸟笼线圈
    • US20020067167A1
    • 2002-06-06
    • US10043622
    • 2002-01-08
    • Marco A. RomoWai Ha Wong
    • G01V003/00
    • G01R33/34076G01R33/34007G01R33/34023G01R33/34046G01R33/34092G01R33/3453Y10T29/43Y10T29/435Y10T29/49012Y10T29/49071Y10T29/49073
    • Superconducting birdcage coil with low-pass and high-pass coil configurations are formed by using strips each with an elongated sapphire substrate with a layer of a high temperature superconductor (HTS) material grown in a wavy pattern over its entire length on one of its main surfaces. A low-pass coil is formed with a pair of ring elements made of an electrically conductive metal and a plurality of such strips arranged parallel to one another and interconnecting these ring elements at junctions which are spaced peripherally along each of the rings. At each of the junctions, the ring element and the HTS layer form a capacitance. A high-pass coil is formed by a plurality of such strips each with electrodes of the HTS material also grown at two end positions separated from each other on the other main surface of its sapphire substrates. These strips are arranged parallel to each other and sequentially around a central axis, each lying in a plane which includes the center axis. The electrodes and the HTS layers on mutually adjacent pairs of strips are closely in face-to-face relationship so as to serve as the ring part of a birdcage configuration containing capacitors.
    • 通过使用带有细长蓝宝石衬底的条带形成具有低通和高通线圈构造的超导鸟笼线圈,该蓝宝石衬底具有在其主体之一上以波长图案长度生长的高温超导体(HTS)材料层 表面。 低通线圈形成有由导电金属制成的一对环形元件和彼此平行布置的多个这样的条,并且在沿着每个环周向间隔开的连接处互连这些环形元件。 在每个结点处,环形元件和HTS层形成电容。 高通线圈由多个这样的带形成,每个带有HTS材料的电极也在其蓝宝石衬底的另一个主表面上彼此分离的两个端部位置处生长。 这些条彼此平行地布置并且依次围绕中心轴线布置,每个中心轴线位于包括中心轴线的平面中。 相互邻近的条带上的电极和HTS层紧密地面对面地关系,以便作为包含电容器的鸟笼配置的环部分。
    • 104. 发明申请
    • RF TRANSMIT SYSTEM WITH SELECTABLE DRIVE PORTS FOR MAGNETIC RESONANCE IMAGING APPARATUSES
    • 具有可选择的驱动端口的RF发送系统用于磁共振成像设备
    • WO2017174552A1
    • 2017-10-12
    • PCT/EP2017/057937
    • 2017-04-04
    • KONINKLIJKE PHILIPS N.V.
    • LIPS, OliverVERNICKEL, Peter
    • G01R33/36G01R33/345G01R33/565G01R33/561G01R33/34
    • G01R33/3664G01R33/34076G01R33/3453G01R33/3678
    • A radio frequency transmit system (40) for use in magnetic resonance imaging apparatuses, comprising a radio frequency driver unit (42) including at least a first radio frequency power source (44; 82) and a second radio frequency power source (46; 84), a radio frequency coil arrangement (48) for generating an RF magnetic excitation field B 1 , and a plurality of switching members (68, 70, 72, 74) electrically connecting the radio frequency power sources (44, 46; 82, 84) to different pairs of drive ports (58, 60, 62, 64) in a first and in at least a second switching status. The first drive port (58) of the first pair of drive ports (58, 60) and the first drive port (62) of the at least second pair of drive ports (62, 64) are arranged spaced by a fixed predetermined angular distance in the azimuthal direction (56) about the center axis (50); and a magnetic resonance imaging system (10) including such radio frequency transmit system (40).
    • 一种用于磁共振成像装置的射频发射系统(40),包括射频驱动器单元(42),所述射频驱动器单元(42)至少包括第一射频电源(44; 82)和第二射频电源 射频功率源(46; 84),用于产生RF磁激励场B 1的射频线圈装置(48),以及多个开关构件(68,70,72,74) 以第一和至少第二开关状态将射频电源(44,46; 82,84)电连接到不同对的驱动端口(58,60,62,64)。 第一对驱动端口(58,60)中的第一驱动端口(58)和至少第二对驱动端口(62,64)中的第一驱动端口(62)以固定的预定角距离 在围绕中心轴线(50)的方位角方向(56)上; 和包括这种射频发射系统(40)的磁共振成像系统(10)。