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71. 发明授权

US07633293B2 Radio frequency field localization for magnetic resonance 有权
标题翻译：用于磁共振的射频场定位
公开(公告)号：US07633293B2
公开(公告)日：2009-12-15
申请号：US11800055
申请日：2007-05-03
申请人： Christopher C. Olson , J. Thomas Vaughan , Anand Gopinath
发明人： Christopher C. Olson , J. Thomas Vaughan , Anand Gopinath
IPC分类号： G01V3/00
CPC分类号： G01R33/34046 , G01R33/246 , G01R33/288 , G01R33/34076 , G01R33/341 , G01R33/3415 , G01R33/3453 , G01R33/5659
摘要： Technology for controlling non-uniformity in the B1 field includes selecting the phase, magnitude, frequency, time, or spatial relationship among various elements of a multi-channel excitation coil in order to control the radio frequency (RF) power emanating from the coil antenna elements. Non-uniformity can be used to steer a constructively interfering B1 field node to spatially correlate with an anatomic region of interest. A convex (quadratically constrained quadratic problem) formulation of the B1 localization problem can be used to select parameters for exciting the coil. Localization can be used in simulated Finite Difference Time Domain B1 field human head distributions and human head phantom measurement.
摘要翻译：用于控制B1场中不均匀性的技术包括选择多通道激励线圈的各种元件之间的相位，幅度，频率，时间或空间关系，以便控制从线圈天线发出的射频（RF）功率元素。可以使用不均匀性来引导建设性干扰的B1场节点与感兴趣的解剖区域空间相关。 B1定位问题的凸（二次约束二次问题）公式可用于选择激励线圈的参数。本地化可用于模拟有限差分时域B1场人头分布和人头体模测量。

72. 发明申请

US20080278167A1 RF COIL FOR IMAGING SYSTEM 审中-公开
标题翻译：用于成像系统的RF线圈
公开(公告)号：US20080278167A1
公开(公告)日：2008-11-13
申请号：US12180104
申请日：2008-07-25
申请人： J. Thomas Vaughan, JR.
发明人： J. Thomas Vaughan, JR.
IPC分类号： G01R33/34
CPC分类号： G01R33/345 , G01R33/34007 , G01R33/34046 , G01R33/3453 , G01R33/3628 , G01R33/3635 , G01R33/3642 , G01R33/3657 , G01R33/422 , G01R33/5612 , G01R33/5659
摘要： An RF coil suitable for use in imaging systems is provided which coil has a dielectric filled cavity formed by a surrounding conducting enclosure, the conducting enclosure preferably being patterned to form continuous electrical paths around the cavity, each of which paths may be tuned to a selected resonant frequency. The patterning breaks up any currents inducted in the coil and shortens path lengths to permit higher frequency, and thus higher field strength operation. The invention also includes improved mechanisms for tuning the resonant frequency of the paths, for selectively detuning the paths, for applying signal to the coil, for shortening the length of the coil and for controlling the field profile of the coil and the delivery of field to the object to the image.
摘要翻译：提供了适用于成像系统的RF线圈，其中线圈具有由周围的导电外壳形成的电介质填充空腔，导电外壳优选地被图案化以形成围绕空腔的连续电路径，每个路径可被调谐到选定的谐振频率。图案分解了线圈中感应的任何电流，并缩短了路径长度以允许更高的频率，从而更高的场强操作。本发明还包括用于调谐路径的谐振频率的改进机构，用于选择性地使所述路径失谐以将信号施加到线圈，以缩短线圈的长度并且用于控制线圈的磁场分布和场的传递对象的图像。

73. 发明申请

US20080129292A1 Rf Coil System for Super High Field (Shf) Mri 有权
标题翻译：用于超高场（Shf）的Rf线圈系统
公开(公告)号：US20080129292A1
公开(公告)日：2008-06-05
申请号：US10595862
申请日：2004-11-03
申请人： Christoph G. Leussler , Christian Findeklee , Michael A. Morich , Zhiyong Zhai , Gordon D. DeMeester
发明人： Christoph G. Leussler , Christian Findeklee , Michael A. Morich , Zhiyong Zhai , Gordon D. DeMeester
IPC分类号： G01R33/422 , G01R33/34
CPC分类号： G01R33/3415 , G01R33/34046 , G01R33/34076 , G01R33/345 , G01R33/3453 , G01R33/3635 , G01R33/3642 , G01R33/365 , G01R33/3678 , G01R33/422 , G01R33/5659
摘要： A radio frequency coil system (38) for magnetic resonance imaging includes a plurality of parallel spaced apart rungs (60) which each includes rung capacitors (68). An end cap (64) is disposed at a closed end (66) of the coil system (38). An RF shield (62) is connected to the end cap (64) and surrounds the rungs (60), extending in a direction substantially parallel to rungs (60). The RF coil system (38) may be used as birdcage, TEM, hybrid, combination birdcage and TEM, or other.
摘要翻译：一种用于磁共振成像的射频线圈系统（38）包括多个平行隔开的梯级（60），每个梯级包括梯级电容器（68）。端盖（64）设置在线圈系统（38）的封闭端（66）处。 RF屏蔽（62）连接到端盖（64）并且围绕梯级（60）沿着基本平行于梯级（60）的方向延伸。 RF线圈系统（38）可以用作鸟笼，TEM，混合，组合鸟笼和TEM等。

74. 发明申请

US20080061785A1 RF Coil and MRI System 有权
标题翻译：射频线圈和MRI系统
公开(公告)号：US20080061785A1
公开(公告)日：2008-03-13
申请号：US11782679
申请日：2007-07-25
申请人： Yoshihisa Soutome , Hideta Habara , Hisaaki Ochi
发明人： Yoshihisa Soutome , Hideta Habara , Hisaaki Ochi
IPC分类号： G01R33/34
CPC分类号： G01R33/3453 , G01R33/34076 , G01R33/3628 , G01R33/3635 , G01R33/3678
摘要： In an MRI apparatus, an RF coil is provided which can generate or detect a circularly-polarized magnetic field with one feeding port, and which can radiate highly efficient, highly homogeneous electromagnetic waves and detect a highly sensitive, highly homogeneous magnetic resonance signal. For this purpose, the coil has a cylindrical shape, one feeding port which exchanges signals, plural first capacitors disposed at circumferential positions in at least one cross-section effectively orthogonal to the direction of the static magnetic field, and at least one second capacitor. In this RF coil, in which a static magnetic field is applied in essentially an identical direction to the direction of the central axis of the cylindrical shape, a second capacitor having a smaller capacity than the capacity of the first capacitor, is disposed at a position from 22.5° to 67.5° or 202.5° to 247.5° in a clockwise direction with respect to the center of the cylindrical shape from the feeding port in a cross-section viewed from a direction passing through the static magnetic field.
摘要翻译：在MRI装置中，提供能够利用一个馈送端口产生或检测圆偏振磁场的RF线圈，并且可以辐射高效，高度均匀的电磁波并检测高灵敏度，高度均匀的磁共振信号。为此，线圈具有圆筒形状，一个馈送端口交换信号，多个第一电容器设置在与静态磁场方向有效正交的至少一个截面的圆周位置处，以及至少一个第二电容器。在该RF线圈中，以与圆筒形状的中心轴方向基本相同的方向施加静磁场，将具有比第一电容器容量小的容量的第二电容器设置在位置在从穿过静磁场的方向观察的横截面中，相对于圆柱形的中心从顺时针方向从22.5°至67.5°或202.5°至247.5°。

75. 发明申请

US20060255806A1 Assymetric radio frequency magnetic line array 有权
标题翻译：对称射频磁线阵列
公开(公告)号：US20060255806A1
公开(公告)日：2006-11-16
申请号：US11415366
申请日：2006-05-01
申请人： J. Vaughan , Gregor Adriany , Kamil Ugurbil
发明人： J. Vaughan , Gregor Adriany , Kamil Ugurbil
IPC分类号： G01V3/00
CPC分类号： G01R33/34046 , G01R33/3453
摘要： 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.
摘要翻译：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。

76. 发明申请

US20060033501A1 RF coil for imaging system 审中-公开
标题翻译：用于成像系统的RF线圈
公开(公告)号：US20060033501A1
公开(公告)日：2006-02-16
申请号：US11196131
申请日：2005-08-03
申请人： J. Vaughan
发明人： J. Vaughan
IPC分类号： G01V3/00
CPC分类号： G01R33/345 , G01R33/34007 , G01R33/34046 , G01R33/3453 , G01R33/3628 , G01R33/3635 , G01R33/3642 , G01R33/3657 , G01R33/422 , G01R33/5612 , G01R33/5659
摘要： An RF coil suitable for use in imaging systems is provided which coil has a dielectric filled cavity formed by a surrounding conducting enclosure, the conducting enclosure preferably being patterned to form continuous electrical paths around the cavity, each of which paths may be tuned to a selected resonant frequency. The patterning breaks up any currents inducted in the coil and shortens path lengths to permit higher frequency, and thus higher field strength operation. The invention also includes improved mechanisms for tuning the resonant frequency of the paths, for selectively detuning the paths, for applying signal to the coil, for shortening the length of the coil and for controlling the field profile of the coil and the delivery of field to the object to the image.
摘要翻译：提供了适用于成像系统的RF线圈，其中线圈具有由周围的导电外壳形成的电介质填充空腔，导电外壳优选地被图案化以形成围绕空腔的连续电路径，每个路径可被调谐到选定的谐振频率。图案分解了线圈中感应的任何电流，并缩短了路径长度以允许更高的频率，从而更高的场强操作。本发明还包括用于调谐路径的谐振频率的改进机构，用于选择性地使所述路径失谐，以向线圈施加信号，以缩短线圈的长度并且用于控制线圈的磁场分布和场的传递对象的图像。

77. 发明申请

US20040140808A1 RF coil for imaging system 审中-公开
标题翻译：用于成像系统的RF线圈
公开(公告)号：US20040140808A1
公开(公告)日：2004-07-22
申请号：US10750031
申请日：2003-12-29
申请人： The General Hospital Corporation d/b/a Massachusetts General Hospital
发明人： J. Thomas Vaughan JR.
IPC分类号： G01V003/00
CPC分类号： G01R33/345 , G01R33/34007 , G01R33/34046 , G01R33/3453 , G01R33/3628 , G01R33/3635 , G01R33/3642 , G01R33/3657 , G01R33/422 , G01R33/5612 , G01R33/5659
摘要： An RF coil suitable for use in imaging systems is provided which coil has a dielectric filled cavity formed by a surrounding conducting enclosure, the conducting enclosure preferably being patterned to form continuous electrical paths around the cavity, each of which paths may be tuned to a selected resonant frequency. The patterning breaks up any currents inducted in the coil and shortens path lengths to permit higher frequency, and thus higher field strength operation. The invention also includes improved mechanisms for tuning the resonant frequency of the paths, for selectively detuning the paths, for applying signal to the coil, for shortening the length of the coil and for controlling the field profile of the coil and the delivery of field to the object to the image.
摘要翻译：提供了适用于成像系统的RF线圈，其中线圈具有由周围的导电外壳形成的电介质填充空腔，导电外壳优选地被图案化以形成围绕空腔的连续电路径，每个路径可被调谐到选定的谐振频率。图案分解了线圈中感应的任何电流，并缩短了路径长度以允许更高的频率，从而更高的场强操作。本发明还包括用于调谐路径的谐振频率的改进机构，用于选择性地使所述路径失谐以将信号施加到线圈，以缩短线圈的长度并且用于控制线圈的磁场分布和场的传递对象的图像。

78. 发明授权

US4680550A High-frequency antenna device in apparatus for nuclear spin tomography and method for operating this device 失效
标题翻译：用于核自旋断层扫描的装置中的高频天线装置以及用于操作该装置的方法
公开(公告)号：US4680550A
公开(公告)日：1987-07-14
申请号：US713635
申请日：1985-03-19
申请人： Norbert Krause
发明人： Norbert Krause
IPC分类号： G01R33/34 , G01R33/345 , G01N24/08
CPC分类号： G01R33/3453
摘要： An antenna device for coupling to a magnetic high-frequency field in apparatus for nuclear spin tomography, includes at least two conductor sections of predetermined length which extend on an imaginary cylinder surface parallel to the direction of the axis of the imaginary cylinder and are arranged for current flow in opposite directions when one end of each of the sections is connected to an external device, a tubular enclosure arranged at a predetermined distance concentrically with respect to the imaginary cylinder surface surrounding the conductor sections, the enclosure being at least largely permeable to low frequencies for magnetic gradient fields, containing electrically highly conductive material and adapted to be connected to the external device, the tubular enclosure extending in the axial direction beyond the end of the conductor sections by a predetermined amount so as to form a circular waveguide antenna with a periodic wave propagation, the coupling elements of which are the conductor sections, and reflectors terminating the other ends of the conductors to reflect waves of the high-frequency field so that a high-frequency field oscillating in phase is formed by the tubular enclosure and the conductor sections.
摘要翻译：用于耦合到用于核自旋断层摄影的装置中的磁性高频场的天线装置包括至少两个预定长度的导体部分，该导体部分在与假想圆柱体的轴线方向平行的假想圆柱体表面上延伸，当每个部分的一端连接到外部装置时，以相对方向流动的电流流动，相对于围绕导体部分的假想圆筒表面同心地布置成预定距离的管状外壳，外壳至少可渗透到低磁性梯度场的频率，包含高导电性材料并且适于连接到外部装置，管状外壳在轴向方向上延伸超过导体部分的端部预定量，以便形成圆形波导天线，其具有周期波传播，其耦合元件是导体部分和反射器终止导体的另一端以反射高频场的波，使得由管状外壳和导体部分形成相位振荡的高频场。

79. 发明授权

US4667160A High frequency antenna device in nuclear-spin tomography apparatus and method for operating same 失效
标题翻译：核自旋断层摄影装置中的高频天线装置及其操作方法
公开(公告)号：US4667160A
公开(公告)日：1987-05-19
申请号：US713553
申请日：1985-03-19
申请人： Norbert Krause
发明人： Norbert Krause
IPC分类号： G01R33/34 , G01R33/20
CPC分类号： G01R33/3453
摘要： An antenna device for exciting a magnetic high-frequency field and/or for receiving corresponding high-frequency signals in a nuclear spin tomography apparatus contains a tubular antenna part which is designed to largely pass low frequencies, for magnetic gradient fields, consists of electrically highly conductive nonmagnetic material and has means for connecting to an external energy feeding or receiving device. In order to permit a simple design for this antenna device, only the tubular antenna part is provided as a circular waveguide for exciting or receiving the high frequency field. The circular waveguide is provided at least in the region of the cross-sectional plane extending through the center of its axial dimension with a system of coupling elements for coupling in or out the corresponding high-frequency power. In addition, further coupling systems may be provided in at least two cross-sectional planes symmetrical to the central cross-sectional plane.
摘要翻译：用于激励磁高频场和/或用于在核自旋断层摄影装置中接收相应的高频信号的天线装置包含管状天线部分，其被设计成大部分通过低频，对于磁梯度场，由电高度导电非磁性材料，并且具有用于连接到外部能量馈送或接收装置的装置。为了允许对该天线装置的简单设计，仅将管状天线部分设置为用于激发或接收高频场的圆形波导。至少在通过其轴向尺寸的中心延伸的横截面的区域中提供圆形波导，该系统具有用于耦合到或相应的高频功率的耦合元件的系统。此外，可以在与中心横截面对称的至少两个横截面中提供另外的联接系统。

80. 发明申请

US20190113586A1 RF TRANSMIT SYSTEM WITH SELECTABLE DRIVE PORTS FOR MAGNETIC RESONANCE IMAGING APPARATUSES 审中-公开
公开(公告)号：US20190113586A1
公开(公告)日：2019-04-18
申请号：US16090282
申请日：2017-04-04
申请人： KONINKLIJKE PHILIPS N.V.
发明人： OLIVER LIPS , PETER VERNICKEL
IPC分类号： G01R33/36 , G01R33/34 , G01R33/345
CPC分类号： G01R33/3664 , G01R33/34076 , G01R33/3453 , G01R33/3678
摘要： 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 B1, 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).

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