公开(公告)号：US20120062232A1

公开(公告)日：2012-03-15

申请号：US13230621

申请日：2011-09-12

申请人： Volker Matschl ,  Jürgen Nistler ,  Sandra Weiß

发明人： Volker Matschl ,  Jürgen Nistler ,  Sandra Weiß

IPC分类号： G01R33/341

CPC分类号： G01R33/3415 ,  G01R33/3628 ,  G01R33/365 ,  G01R33/422 ,  G01R33/5612

摘要： A transmit coil arrangement for a magnetic resonance device includes a plurality of individually actuatable conductor loops following one after another in a peripheral direction and a longitudinal direction on a cylinder surface. At least two groups, at a distance from one another in the peripheral direction, of at least two conductor loops following one after the other in the longitudinal direction are provided in the peripheral direction. To decouple the at least two groups, each of the at least two groups is bounded at least in the peripheral direction by at least one screen surface extending essentially in a radial direction and the longitudinal direction.

摘要翻译： 用于磁共振装置的发射线圈装置包括沿圆周方向和圆柱体表面上的纵向方向一个接一个地沿着多个可单独致动的导体环。 在周向方向上设置至少两个沿着圆周方向彼此间隔一定距离的至少两个沿着纵向方向一个接一个的导体环路。 为了使所述至少两个组分离，所述至少两个组中的每一个至少在周向方向上限定至少一个基本上在径向方向和纵向方向上延伸的丝网表面。

公开(公告)号：US20100033184A1

公开(公告)日：2010-02-11

申请号：US12187691

申请日：2008-08-07

申请人： Richard S. Withers ,  Robert E. Nast ,  Weston A. Anderson

发明人： Richard S. Withers ,  Robert E. Nast ,  Weston A. Anderson

IPC分类号： G01R33/341

CPC分类号： G01R33/34053 ,  G01R33/34007 ,  G01R33/34023 ,  G01R33/34069 ,  G01R33/34092 ,  G01R33/3628

摘要： RF electric fields produced by electric potential differences in NMR probe coil windings may penetrate the NMR sample and sample tube causing sensitivity loss and noise in NMR spectroscopy. Counter-wound spiral coils placed on the opposite surfaces of a planar substrate or on two adjacent planar substrates produce electric potentials that minimize the electric field over the sample region, thereby increasing the sensitivity of the NMR probe. Alternatively counter-wound spiral coils placed adjacent to each other on the outer surface of two concentric cylindrical surfaces that surround the NMR sample minimize the electric field over the sample region. The electric potential of the spiral coils is reduced by adjusting a length of at least one coil.

摘要翻译： 通过NMR探针线圈绕组中的电位差产生的RF电场可能渗透NMR样品和样品管，导致NMR光谱中的灵敏度损失和噪声。 放置在平面基板或两个相邻平面基板的相对表面上的反卷绕螺旋线圈产生使得样品区域上的电场最小化的电势，从而增加NMR探针的灵敏度。 或者在围绕NMR样品的两个同心圆柱形表面的外表面上彼此相邻放置的反卷绕螺旋线圈使得样品区域上的电场最小化。 通过调节至少一个线圈的长度来减小螺旋线圈的电位。

公开(公告)号：US20090315562A1

公开(公告)日：2009-12-24

申请号：US12144810

申请日：2008-06-24

申请人： Selaka Bandara Bulumulla ,  Christopher Judson Hardy ,  Florian Wiesinger

发明人： Selaka Bandara Bulumulla ,  Christopher Judson Hardy ,  Florian Wiesinger

IPC分类号： G01R33/341

CPC分类号： G01R33/3415

摘要： A system for receiving MR data that includes an RF coil array for a magnetic resonance (MR) imaging apparatus. The RF coil array includes a plurality of non-concentric receiver coils arrayed along a first direction. A receiver coil at a first end of the RF coil array has a perimeter width greater than a perimeter width of a receiver coil at a second end of the RF coil array that is opposite from the first end along the first direction.

摘要翻译： 一种用于接收包括用于磁共振（MR）成像设备的RF线圈阵列的MR数据的系统。 RF线圈阵列包括沿着第一方向排列的多个非同心接收器线圈。 在RF线圈阵列的第一端处的接收器线圈的周边宽度大于在RF线圈阵列的与沿着第一方向的第一端相反的第二端处的接收器线圈的周边宽度。

公开(公告)号：US20090140740A1

公开(公告)日：2009-06-04

申请号：US12327996

申请日：2008-12-04

申请人： Jian Jun Du ,  Jian Zhong Li ,  Jian Hua Pei ,  Yao Xing

发明人： Jian Jun Du ,  Jian Zhong Li ,  Jian Hua Pei ,  Yao Xing

IPC分类号： G01R33/341

CPC分类号： G01R33/3415

摘要： A receiver coil array for a magnetic resonance imaging system has an inductive coupling coil incorporated in the middle coil unit of the receiver coil array as its secondary coil, which serves to regulate the frequency and impedance of the middle coil unit. The secondary coil has an output regulation circuit which can output the magnetic resonance signals received by the middle coil unit to increase the number of the coil units in the receiver coil array that receive and output resonance signals while further regulating the frequency and impedance of the middle coil unit. Since this receiver coil array achieves regulation of the frequency and impedance of the middle coil unit and increases the number of the coil units in the receiver coil array that receive and output the resonance signals, it can improve the quality of the signals received by the receiver coil array. Moreover, the design is simple and is easy to achieve.

摘要翻译： 用于磁共振成像系统的接收器线圈阵列具有并入作为其次级线圈的接收器线圈阵列的中间线圈单元中的感应耦合线圈，其用于调节中间线圈单元的频率和阻抗。 次级线圈具有输出调节电路，其可以输出由中间线圈单元接收的磁共振信号，以增加接收和输出谐振信号的接收器线圈阵列中的线圈单元的数量，同时进一步调节中间线圈的频率和阻抗 线圈单元。 由于该接收器线圈阵列实现了中间线圈单元的频率和阻抗的调节，并且增加了接收和输出谐振信号的接收器线圈阵列中的线圈单元的数量，所以可以提高接收器接收的信号的质量 线圈阵列 此外，设计简单，易于实现。

公开(公告)号：US20090079432A1

公开(公告)日：2009-03-26

申请号：US12325714

申请日：2008-12-01

申请人： Robert G. Pinkerton ,  Ravi S. Menon

发明人： Robert G. Pinkerton ,  Ravi S. Menon

IPC分类号： G01R33/341

CPC分类号： G01R33/365 ,  G01R33/34046 ,  G01R33/3415

摘要： A surface coil array comprises a surface coil support and an arrangement of non-overlapping magnetically decoupled surface coils mounted on the support. The surface coils encompass a volume into which a target to be imaged is placed. Magnetic decoupling circuits act between adjacent surface coils. Impedance matching circuitry couples the surface coils to conventional transmit and receive components.

摘要翻译： 表面线圈阵列包括表面线圈支撑件和安装在支撑件上的非重叠磁解耦表面线圈的布置。 表面线圈包括放置被成像目标的体积。 磁性去耦电路在相邻的表面线圈之间起作用。 阻抗匹配电路将表面线圈耦合到常规的发射和接收部件。

公开(公告)号：US20080306377A1

公开(公告)日：2008-12-11

申请号：US12139123

申请日：2008-06-13

申请人： Cameron Anthony Piron ,  Christopher Alexander Luginbuhl ,  Donald B. Plewes

发明人： Cameron Anthony Piron ,  Christopher Alexander Luginbuhl ,  Donald B. Plewes

IPC分类号： A61B5/055 ,  G01R33/341

CPC分类号： A61B19/20 ,  A61B5/0555 ,  A61B8/0825 ,  A61B8/0833 ,  A61B8/0841 ,  A61B8/406 ,  A61B8/4245 ,  A61B8/4416 ,  A61B8/5238 ,  A61B10/0233 ,  A61B90/10 ,  A61B90/11 ,  A61B90/14 ,  A61B90/17 ,  A61B2017/3411 ,  A61B2017/3413 ,  A61B2090/374 ,  A61B2090/378 ,  A61B2090/3908 ,  G01S7/52049

摘要： Apparatus and method for using radio frequency coil systems for magnetic resonance imaging within an open architecture apparatus is provided. The MRI coil system includes a support structure with an open architecture in which secondary support structures, compression systems and plates containing RF coil systems may be introduced. These structures and RF coils can be moved relative to the patient, or removed entirely from the system. In one embodiment the system consists of a tabletop coil system, while another embodiment consists of a dedicated stretcher design.

摘要翻译： 提供了一种在开放式架构设备内使用射频线圈系统进行磁共振成像的装置和方法。 MRI线圈系统包括具有开放结构的支撑结构，其中可以引入包含RF线圈系统的辅助支撑结构，压缩系统和板。 这些结构和RF线圈可以相对于患者移动，或者完全从系统移除。 在一个实施例中，系统由桌面线圈系统组成，而另一实施例由专用的担架设计组成。

公开(公告)号：US20080297156A1

公开(公告)日：2008-12-04

申请号：US12129060

申请日：2008-05-29

申请人： Hiroto Suematsu ,  Yoshiki Kida ,  Yoshiaki Yamakoshi ,  Hiroshi Ikeda ,  Tetsuo Miyamoto ,  Ryoji Tanaka

发明人： Hiroto Suematsu ,  Yoshiki Kida ,  Yoshiaki Yamakoshi ,  Hiroshi Ikeda ,  Tetsuo Miyamoto ,  Ryoji Tanaka

IPC分类号： G01R33/341

CPC分类号： G01R33/34046 ,  G01R33/34061 ,  G01R33/34092 ,  G01R33/3635

摘要： An NMR probe permits measurements to be made with its inner coil without replacing the probe. The NMR probe has three coils disposed to surround a sample tube. An inner coil can resonate with the HF and LF. An intermediate coil can resonate with the HF and LF, and produces an RF magnetic field perpendicular to the RF field produced by the inner coil. An outermost coil can resonate at least at a lock frequency. The outermost coil produces an RF magnetic field which is perpendicular to the RF field produced by the intermediate coil but which is coincident in direction with the RF field produced by the inner coil.

摘要翻译： NMR探头允许使用其内部线圈进行测量，而无需更换探头。 NMR探针具有围绕样品管设置的三个线圈。 内部线圈可以与HF和LF谐振。 中间线圈可以与HF和LF共振，并产生垂直于由内线圈产生的RF场的RF磁场。 最外面的线圈可以至少以锁定频率谐振。 最外面的线圈产生垂直于由中间线圈产生的RF场的RF磁场，但是它与由内线圈产生的RF场方向一致。

公开(公告)号：US20080238424A1

公开(公告)日：2008-10-02

申请号：US12089718

申请日：2006-09-15

申请人： Cecilia Possanzini

发明人： Cecilia Possanzini

IPC分类号： G01R33/341 ,  H01Q21/00

CPC分类号： G01R33/3415 ,  G01R33/34007 ,  G01R33/341

摘要： A radio frequency coils array includes a plurality of conductive RF loops (62a, 62b, 62c, 62d, 162a, 162b, 262a, 262b, 362a, 362b, 362c, 462a, 462b, 462c, 562a, 562b) configured to excite or receive magnetic resonance signals, and a plurality of electronics modules (64a, 64b, 64c, 64d, 164a, 164b, 264a, 264b, 364a, 364b, 364c, 464a, 464b, 64c, 564a, 564b) corresponding to the plurality of conductive RF loops. The electronics modules are grouped together in a compact electronics region (66, 166, 266, 366, 466, 66). Each RF coil is operatively connected with a corresponding electronics module. Each electronics module includes at least a pre-amplifier.

摘要翻译： 射频线圈阵列包括多个导电RF回路（62a，62b，62c，62d，162a，162b，262a，262b，362a，362b，362c，462a，462 b，462c，562a，562b）被配置为激发或接收磁共振信号，以及多个电子模块（64a，64b，64c，64d，164a，164b，264a，264b ，364a，364b，364c，464a，464b，64c，564a，564b）对应于多个导电RF环路。 电子模块在紧凑的电子器件区域（66,166,266,366,466,66）中组合在一起。 每个RF线圈与相应的电子模块可操作地连接。 每个电子模块至少包括前置放大器。

公开(公告)号：US20080054903A1

公开(公告)日：2008-03-06

申请号：US11572714

申请日：2005-07-12

申请人： Cecilia Possanzini ,  Marinus Johannes Adrianus Van Helvoort ,  Jan Warntjes ,  Robert Kleihorst

发明人： Cecilia Possanzini ,  Marinus Johannes Adrianus Van Helvoort ,  Jan Warntjes ,  Robert Kleihorst

IPC分类号： G01R33/341

CPC分类号： G01R33/341

摘要： The invention relates to a magnetic resonance imaging (MRI) apparatus comprising an electrical coil system (17) for transmitting and receiving a radio-frequent (RF) magnetic field from an examination volume (3) of the MRI apparatus. The electrical coil system (17) comprises at least one surface coil (35) which substantially extends in a plane. The surface coil serves for transmitting and/or receiving an RF magnetic field which is substantially oriented perpendicular to the plane of the surface coil (35). The surface coil (35) has a main coil axis (37). When the MRI apparatus is in use the main coil axis (37) extends substantially parallel to a main magnetic field in the examination volume (3) of the MRI apparatus. On both sides of the main coil axis (37) the surface coil (35) comprises an electrically conducting element (39) which extends substantially parallel to the main coil axis (37). To provide a surface coil (35) which transmits more homogeneous RF magnetic fields and/or has a more homogeneous sensitivity for received RF magnetic fields than known surface coils, at least one of the electrically conducting elements (39) of the surface coil (35) comprises at least two electrical conductors (41). With respect to their distance to the main coil axis (37) these electrical conductors (41) are positioned at a relatively short distance from each other. In the plane of the surface coil (35) the electrical conductors (41) substantially extend parallel to the main coil axis (37) of the surface coil (35).

摘要翻译： 本发明涉及一种磁共振成像（MRI）装置，其包括用于从MRI装置的检查体积（3）发射和接收射频（RF）磁场的电线圈系统（17）。 电线圈系统（17）包括基本上在平面中延伸的至少一个表面线圈（35）。 表面线圈用于传输和/或接收基本上垂直于表面线圈（35）的平面定向的RF磁场。 表面线圈（35）具有主线圈轴（37）。 当MRI装置使用时，主线圈轴线（37）基本上平行于MRI装置的检查体积（3）中的主磁场延伸。 在主线圈轴（37）的两侧，表面线圈（35）包括基本上平行于主线圈轴线（37）延伸的导电元件（39）。 为了提供表面线圈（35），所述表面线圈（35）传递更均匀的RF磁场和/或对已接收的RF磁场具有比已知表面线圈更均匀的灵敏度，表面线圈（35）的至少一个导电元件（39） ）包括至少两个电导体（41）。 对于它们到主线圈轴线（37）的距离，这些电导体（41）位于彼此相对短的距离处。 在表面线圈（35）的平面中，电导体（41）基本上平行于表面线圈（35）的主线圈轴线（37）延伸。

公开(公告)号：US06930481B2

公开(公告)日：2005-08-16

申请号：US10234242

申请日：2002-09-05

申请人： Kazuya Okamoto ,  Yoshinori Hamamura ,  Yoshio Machida

发明人： Kazuya Okamoto ,  Yoshinori Hamamura ,  Yoshio Machida

IPC分类号： G01R33/341 ,  A61B5/055 ,  G01R33/3415 ,  G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/3678

摘要： A magnetic resonance imaging apparatus acquires magnetic resonance signals by the PI method using an RF coil unit having basic coils serving as surface coils which are arrayed with at least two coils along a static magnetic field direction (z direction) and at least two coils along each of two orthogonal x, y directions. The coils are divided into an upper unit and a lower unit. The upper unit and lower unit are fixed by a band or the like to allow them to be mounted on an object to be examined. The signals detected by the respective surface coils are sent to a data processing system through independent receiver units and formed into a magnetic resonance image.

摘要翻译： 磁共振成像装置使用具有作为表面线圈的基本线圈的RF线圈单元，通过PI法获取磁共振信号，该线圈单元沿着静磁场方向（z方向）排列有至少两个线圈，并且沿着每个线圈具有至少两个线圈 两个正交的x，y方向。 线圈分为上部单元和下部单元。 上部单元和下部单元通过带状物等固定，以便将它们安装在被检查物体上。 由各个表面线圈检测的信号通过独立的接收器单元被发送到数据处理系统并形成磁共振图像。