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29 条记录 (耗时 0.022 秒)

    MAGNETIC RESONANCE GUIDANCE OF A SHAFT TO A TARGET ZONE
    22.
    发明申请
    MAGNETIC RESONANCE GUIDANCE OF A SHAFT TO A TARGET ZONE 有权
    对目标区域的磁共振指导

    公开(公告)号：US20140018664A1

    公开(公告)日：2014-01-16

    申请号：US14007990

    申请日：2012-04-04

    申请人： Steffen Weiss ,  Ronaldus Frederik Johannes Holthuizen ,  Sascha Krueger ,  Peter Koken ,  Daniel Wirtz ,  Thomas Erik Amthor ,  Alk Uhlemann

    发明人： Steffen Weiss ,  Ronaldus Frederik Johannes Holthuizen ,  Sascha Krueger ,  Peter Koken ,  Daniel Wirtz ,  Thomas Erik Amthor ,  Alk Uhlemann

    IPC分类号： A61B5/055 ,  A61B5/00 ,  A61B5/06

    CPC分类号： A61B5/055 ,  A61B5/064 ,  A61B5/6832 ,  A61B5/72 ,  G01R33/287 ,  G01R33/34084

    摘要： A medical apparatus (1100) comprising a magnetic resonance imaging system and an interventional device (300) comprising a shaft (302, 1014, 1120). The medical apparatus further comprises a toroidal magnetic resonance fiducial marker (306, 600, 800, 900, 1000, 1122) attached to the shaft. The shaft passes through a center point (610, 810, 908, 1006) of the fiducial marker. The medical apparatus further comprises machine executable instructions (1150, 1152, 1154, 1156, 1158) for execution by a processor. The instructions cause the processor to acquire (100, 200) magnetic resonance data, to reconstruct (102, 202) a magnetic resonance image (1142), and to receive (104, 204) the selection of a target volume (1118, 1144, 1168). The instructions further cause the processor to repeatedly: acquire (106, 206) magnetic resonance location data (1146) from the fiducial marker and render (108, 212) a view (1148, 1162) indicating the position of the shaft relative to the target zone.

    摘要翻译： 一种包括磁共振成像系统和包括轴（302,1014,1120）的介入装置（300）的医疗装置（1100）。 医疗装置还包括连接到轴的环形磁共振基准标记（306,600,800,900,1000,1122）。 轴通过基准标记的中心点（610,810,908,1006）。 医疗设备还包括用于由处理器执行的机器可执行指令（1150,1152,1154,1156,1158）。 所述指令使得所述处理器获取（100,200）磁共振数据，以重建（102,202）磁共振图像（1142），并且接收（104,204）所述目标体积（1118,1144， 1168）。 所述指令还使所述处理器重复地：从所述基准标记获取（106,206）磁共振位置数据（1146），并且渲染（108,212）指示所述轴相对于所述目标的位置的视图（1148,1162） 区。

    MAGNETIC RESONANCE RECEIVE COIL ARRAY INTEGRATED INTO WALL OF SCANNER BORE
    24.
    发明申请
    MAGNETIC RESONANCE RECEIVE COIL ARRAY INTEGRATED INTO WALL OF SCANNER BORE 审中-公开
    磁共振接收线圈阵列集成到扫描器的壁上

    公开(公告)号：US20090206840A1

    公开(公告)日：2009-08-20

    申请号：US12305442

    申请日：2007-06-19

    申请人： Johan A. Overweg ,  Daniel Wirtz

    发明人： Johan A. Overweg ,  Daniel Wirtz

    IPC分类号： G01R33/36

    CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/3642 ,  G01R33/3657

    摘要： In a magnetic resonance scanner, a radio frequency transmit coil (30, 30′) includes a plurality of parallel rods rungs (32, 32′, 32″) at least partially surrounding an examination region. The radio frequency transmit coil is configured to transmit radio frequency energy into the examination region at or near a magnetic resonance frequency. A plurality of magnetic resonance receive coils (40) are disposed with the radio frequency transmit coil. For decoupling, each magnetic resonance receive coil is positioned substantially centered on a proximate one rod or rung or proximate plurality of neighboring rods or rungs of the radio frequency transmit coil.

    摘要翻译： 在磁共振扫描器中，射频发射线圈（30,30'）包括至少部分地围绕检查区域的多个平行杆梯级（32,32'，32“）。 射频发射线圈被配置为在磁谐振频率处或接近磁共振频率处将射频能量传送到检查区域。 多个磁共振接收线圈（40）与射频发射线圈配置。 为了解耦，每个磁共振接收线圈基本上定位在射频发射线圈的邻近的一个杆或梯级或邻近的多个相邻杆或梯级的中心。

    Detuning a radio-frequency coil
    29.
    发明授权
    Detuning a radio-frequency coil 有权
    解除射频线圈

    公开(公告)号：US07973531B2

    公开(公告)日：2011-07-05

    申请号：US12302354

    申请日：2007-05-29

    申请人： Christian Findeklee ,  Daniel Wirtz

    发明人： Christian Findeklee ,  Daniel Wirtz

    IPC分类号： G01V3/00

    CPC分类号： G01R33/34046 ,  G01R33/34007 ,  G01R33/345 ,  G01R33/3453 ,  G01R33/3635 ,  G01R33/3657

    摘要： For detuning of radio-frequency coils (in magnetic resonance imaging and spectroscopy, for example), a conducting element (102) of a transmission cable is configured to form a primary resonant circuit tunable to at least one first resonance frequency. A second conducting element (104) of the transmission cable is configured to form a switching circuit that is electrically insulated from and reactively coupled via inductive coupling and/or capacitive coupling to the primary resonant circuit, and is adapted to tune the primary resonant circuit to at least one second resonance frequency, thereby detuning the primary resonant circuit.

    摘要翻译： 对于射频线圈的失谐（例如在磁共振成像和光谱学中），传输电缆的导电元件（102）被配置为形成可调谐至少一个第一共振频率的主谐振电路。 传输电缆的第二导电元件（104）被配置为形成开关电路，该开关电路通过电感耦合和/或电容耦合与主谐振电路电绝缘并且通过其反应耦合，并且适于将主谐振电路调谐到 至少一个第二谐振频率，从而使主谐振电路失谐。