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1. 发明授权

US5594339A Flexible nuclear magnetic resonance receiver coils and systems 失效
标题翻译：灵活的核磁共振接收线圈和系统
公开(公告)号：US5594339A
公开(公告)日：1997-01-14
申请号：US500821
申请日：1995-07-11
申请人： Robert G. Henderson , James W. Kristoff , David A. Molyneaux
发明人： Robert G. Henderson , James W. Kristoff , David A. Molyneaux
IPC分类号： A61B5/055 , G01R33/34 , G01R33/341 , H01F5/00 , G01V3/00
CPC分类号： G01R33/3415 , G01R33/34084 , G01R33/34007 , G01R33/341
摘要： A resonance exciting coil (C) disposed in an image region in which a main magnetic field and transverse gradients have been produced. A flexible receiving coil (D) includes a flexible plastic sheet (40) on which an electrically continuous flexible foil strip (36) is adhered to receive signals from the resonating nuclei. The coil also includes components (24), mounted on the flexible plastic sheet (40), which may amplify the received signals before they are transmitted along a cable (22). A first soft material layer (44) is mounted on the flexible plastic sheet (40) for providing comfort to the patient. A flexible mechanical structure (50) on which two flexible receiving coils (F, G) adjusts an overlap between the coils (F, G) as the coils are flexed to adjust interaction properties of the coils (FIGS. 4 A, 4B). Pivotal rods (56) of a fixed length which connect two flexible coils (F, G) cause the spacing of the coils to vary in accordance to a flex applied to the coils to adjust the relative interactive properties with flexing (FIGS. 5 A, 5B). Flexible coils (D) in modular components provide identification points on each modular component which connect to similar identification points on other flexible coil modular components (FIGS. 9 A-9C).
摘要翻译：设置在已经产生主磁场和横向梯度的图像区域中的共振励磁线圈（C）。柔性接收线圈（D）包括柔性塑料片（40），电连续的柔性箔条（36）粘附在柔性塑料片上以接收来自谐振核的信号。线圈还包括安装在柔性塑料片（40）上的组件（24），其可以在沿着电缆（22）传输之前放大所接收的信号。第一柔软材料层（44）安装在柔性塑料片（40）上，以便为患者提供舒适感。柔性机械结构（50），其中两个柔性接收线圈（F，G）在线圈弯曲时调节线圈（F，G）之间的重叠，以调节线圈的相互作用特性（图4A，4B）。连接两个柔性线圈（F，G）的固定长度的枢杆（56）使得线圈的间距根据施加到线圈的弯曲而变化，以通过弯曲来调整相对的相对性质（图5A， 5B）。模块化组件中的柔性线圈（D）在每个模块化组件上提供连接到其他柔性线圈模块组件上的类似识别点的识别点（图9A-9C）。

2. 发明授权

US5757189A Arbitrary placement multimode coil system for MR imaging 失效
标题翻译：用于MR成像的任意放置多模线圈系统
公开(公告)号：US5757189A
公开(公告)日：1998-05-26
申请号：US757240
申请日：1996-11-27
申请人： David A. Molyneaux , William O. Braum , James W. Kristoff
发明人： David A. Molyneaux , William O. Braum , James W. Kristoff
IPC分类号： G01R33/48 , A61B5/055 , G01R33/341 , G01R33/3415 , G01V3/00
CPC分类号： G01R33/341 , G01R33/3415
摘要： A multimode radio frequency coil (50.sub.1) receives resonance signals from a region of interest while allowing arbitrary placement of the coil. A peripheral electrical conductor (62) is divided into four symmetric segments by capacitors (76), (78), (80), (82). A pair of crossing conductors (64, 66) are connected between 90.degree. offset diagonally opposite portions of the peripheral loop (62). The crossing conductors include capacitors (68, 70) when not connected and include capacitors (68, 70, 86, 88) when connected at their midpoints. With this configuration, the coil supports orthogonal modes (72, 74) within the plane of the coil and, additionally, a third orthogonal mode (84) perpendicular to the plane of the coil. To image an extended region, a plurality of coils are overlapped to minimize mutual inductance relative to a first mode. An adjustable capacitor (90) across one of the coils adjusts mutual inductance relative to the second mode. A pair of half wavelength conductors (94, 96) are connected diagonally across the coils and are interconnected by an adjustable capacitor (98) for adjusting the third mode.
摘要翻译：多模射频线圈（501）从感兴趣的区域接收谐振信号，同时允许线圈的任意放置。周边电导体（62）通过电容器（76），（78），（80），（82）分成四个对称段。一对交叉导体（64,66）连接在外围环（62）的90°偏移对角线相对部分之间。交叉导体包括当未连接时的电容器（68,70），并且当它们的中点连接时包括电容器（68,70,86,88）。利用该配置，线圈支撑线圈平面内的正交模式（72,74），并且还支持垂直于线圈平面的第三正交模式（84）。为了对延伸区域进行成像，重叠多个线圈以使相对于第一模式的互感最小化。跨越一个线圈的可调节电容器（90）调节相对于第二模式的互感。一对半波长导体（94,96）被对角地连接在线圈上，并通过可调电容器（98）互连，用于调节第三模式。

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