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公开(公告)号：US06462636B1
公开(公告)日：2002-10-08
申请号：US09709268
申请日：2000-11-09
申请人： Johannes Adrianus Overweg , Carsten Warmuth , Christoph Günther Leussler , Peter Karl Hermann Röschmann
发明人： Johannes Adrianus Overweg , Carsten Warmuth , Christoph Günther Leussler , Peter Karl Hermann Röschmann
IPC分类号： G01V300
CPC分类号： G01R33/385 , G01R33/3852
摘要： The invention relates to an MR apparatus which includes a cylindrical main field magnet for generating a uniform, steady magnetic field whose cylindrical shape defines a symmetry axis, a gradient coil system which encloses the symmetry axis and includes a plurality of gradient coils, an RF coil system which is situated inside the gradient coil system and includes a plurality of mutually offset conductors which extend parallel to the symmetry axis, and a table top for accommodating an object to be examined.
摘要翻译： 本发明涉及一种MR装置，它包括一个圆柱形主磁场磁体，用于产生一个均匀的，稳定的磁场，其圆柱形形状定义一个对称轴;一个包围对称轴并包括多个梯度线圈的梯度线圈系统，一个RF线圈系统 其位于梯度线圈系统内部并且包括平行于对称轴线延伸的多个相互偏移的导体，以及用于容纳被检查物体的台面。
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公开(公告)号：US09608395B2
公开(公告)日：2017-03-28
申请号：US13991629
申请日：2011-12-07
IPC分类号： G01V3/00 , H01R39/08 , A61B5/055 , A61B6/03 , A61B6/00 , G01R33/48 , G01R33/36 , A61N5/10 , A61B5/00
CPC分类号： H01R39/08 , A61B5/0035 , A61B5/055 , A61B6/032 , A61B6/4417 , A61B6/56 , A61N5/1081 , A61N2005/1055 , G01R33/36 , G01R33/4808 , G01R33/4812 , H01R2201/12
摘要： A medical apparatus (600) including: a magnetic resonance imaging system (602), a medical device (634), and a slip ring assembly (400, 500) for supplying electrical power to the medical device. The slip ring assembly includes: a cylindrical body (100), a rotating member (402) for rotating the medical device, a first cylindrical conductor attached to the cylindrical body, a second cylindrical conductor (108), a first set of conductive elements (112, 712) connected to the second cylindrical conductor; and a brush assembly (406) comprising a first brush (302) and a second brush (304). The first brush is operable to contact the first cylindrical conductor. The second brush is operable to contact the set of conductive elements. The first and second cylindrical conductive elements overlap at least partially. The second cylindrical conductor is connected to the cylindrical body. The first cylindrical conductor and the second cylindrical conductors are electrically isolated.
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公开(公告)号：US20140043027A1
公开(公告)日：2014-02-13
申请号：US13991629
申请日：2011-12-07
CPC分类号： H01R39/08 , A61B5/0035 , A61B5/055 , A61B6/032 , A61B6/4417 , A61B6/56 , A61N5/1081 , A61N2005/1055 , G01R33/36 , G01R33/4808 , G01R33/4812 , H01R2201/12
摘要： A medical apparatus (600) including: a magnetic resonance imaging system (602), a medical device (634), and a slip ring assembly (400, 500) for supplying electrical power to the medical device. The slip ring assembly includes: a cylindrical body (100), a rotating member (402) for rotating the medical device, a first cylindrical conductor attached to the cylindrical body, a second cylindrical conductor (108), a first set of conductive elements (112, 712) connected to the second cylindrical conductor; and a brush assembly (406) comprising a first brush (302) and a second brush (304). The first brush is operable to contact the first cylindrical conductor. The second brush is operable to contact the set of conductive elements. The first and second cylindrical conductive elements overlap at least partially. The second cylindrical conductor is connected to the cylindrical body. The first cylindrical conductor and the second cylindrical conductors are electrically isolated.
摘要翻译： 一种医疗设备（600），包括：磁共振成像系统（602），医疗设备（634）和用于向医疗设备供电的滑环组件（400,500）。 滑环组件包括：圆柱体（100），用于旋转医疗装置的旋转构件（402），附接到圆柱体的第一圆柱形导体，第二圆柱形导体（108），第一组导电元件 112,712）连接到第二圆柱形导体; 和包括第一刷（302）和第二刷（304）的刷组件（406）。 第一刷可操作以接触第一圆柱形导体。 第二刷可操作以接触该组导电元件。 第一和第二圆柱形导电元件至少部分重叠。 第二圆柱形导体连接到圆柱体。 第一圆柱形导体和第二圆柱形导体是电隔离的。
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公开(公告)号：US20130106420A1
公开(公告)日：2013-05-02
申请号：US13696127
申请日：2011-05-13
IPC分类号： G01R33/385
CPC分类号： G01R33/385 , G01R33/3854 , G01R33/4215
摘要： A magnetic resonance imaging magnet assembly (100) comprising: a magnet (102) adapted for generating a main magnetic field for aligning the magnetic spins of nuclei of a subject (502) located within an imaging volume (504); and a gradient coil (103) for generating a gradient magnetic field for spatial encoding of the magnetic resonance signal of spins of nuclei within the imaging volume, wherein the gradient coil is adapted to be mounted into the magnet, wherein the gradient coil comprises: a first gradient coil section (112), wherein the first gradient coil section comprises a first rigid element (113), a second gradient coil section (114), wherein the second gradient coil section also comprises a second rigid element (115), a connecting element (116, 300, 302, 304, 400) for joining the two half gradient coils, wherein the connecting element comprises an elastic material (116), wherein the elastic material is in contact with the first rigid element and the second rigid element.
摘要翻译： 一种磁共振成像磁体组件（100），包括：适于产生主磁场的磁体（102），用于对准位于成像体积（504）内的对象（502）的核的磁旋转; 以及梯度线圈（103），用于产生用于空间编码所述成像体积内的核心旋转的磁共振信号的梯度磁场，其中所述梯度线圈适于安装到所述磁体中，其中所述梯度线圈包括： 第一梯度线圈段（112），其中第一梯度线圈段包括第一刚性元件（113），第二梯形线圈段（114），其中第二梯形线圈段还包括第二刚性元件（115），连接 用于连接两个半梯度线圈的元件（116,3300,302,304,400），其中所述连接元件包括弹性材料（116），其中所述弹性材料与所述第一刚性元件和所述第二刚性元件接触。
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5.发明申请公开(公告)号：US20120089010A1
公开(公告)日：2012-04-12
申请号：US13377831
申请日：2010-06-23
申请人： Christoph Leussler , Peter Boernert , Daniel Wirtz , Bernd David , Holger Eggers , Jochen Keupp , Johannes Adrianus Overweg , Rainer Eckart
发明人： Christoph Leussler , Peter Boernert , Daniel Wirtz , Bernd David , Holger Eggers , Jochen Keupp , Johannes Adrianus Overweg , Rainer Eckart
IPC分类号： A61B5/055
CPC分类号： A61M16/10 , A61B5/055 , A61M16/14 , A61M2016/0015 , A61M2202/066
摘要： A dispenser (132), a magnetic resonance imaging system (100), and a method for using hyperpolarized contrast agent (304) during a magnetic resonance imaging examination. The dispenser comprises an attachment component (136) for a face piece (138). The face piece is adapted for receiving the surface of a subject (114) such that when the subject inhales hyperpolarized contrast agent enters the respiratory system of the subject. The dispenser further comprises a reservoir (300) adapted for receiving the hyperpolarized contrast agent. The dispenser further comprises a gas flow (406) tube connected to the attachment component and a vaporizer (406, 408, 412, 510, 602, 606) for vaporizing the hyperpolarized contrast agent in the gas flow tube into a hyperpolarized vapor. The dispenser further comprises a controller (402) for controlling when the vaporizer vaporizes the hyperpolarized contrast agent.
摘要翻译： 分配器（132），磁共振成像系统（100）以及在磁共振成像检查期间使用超极化造影剂（304）的方法。 分配器包括用于面件（138）的附接部件（136）。 面部件适于接纳被检体（114）的表面，使得当受试者吸入超极化造影剂进入受试者的呼吸系统时。 分配器还包括适于接收超极化造影剂的贮存器（300）。 分配器还包括连接到附接部件的气流（406）管和用于将气体流管中的超极化造影剂蒸发成超极化蒸气的蒸发器（406,408,412,510,602,606）。 分配器还包括控制器（402），用于控制何时蒸发器蒸发超极化造影剂。
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公开(公告)号：US20100267567A1
公开(公告)日：2010-10-21
申请号：US12746778
申请日：2008-12-03
IPC分类号： H01F6/04 , G01R33/3815
CPC分类号： G01R33/3815 , H01F6/04
摘要： A magnet system, in particular for a magnetic resonance examination system, comprises a superconductive main magnet having a near group of coil windings and a remote group of coil windings. A gradient coil system forms a source of power dissipation into at least part of the coil windings. The near group of coil windings and the remote group of coil windings are near and remote from the source of power dissipation, respectively A cooling system has a high-temperature cooling station and a low-temperature cooling station. The high-temperature cooling station cools mainly the near group of coil windings. The low temperature cooling station cools mainly the remote group of coil windings. The near and remote group optionally are made of different superconductive materials. Thus, additional degrees of freedom are achieved which allow less expensive magnet design.
摘要翻译： 特别是用于磁共振检查系统的磁体系统包括具有近组线圈绕组和远程线圈绕组的超导主磁体。 梯度线圈系统形成至少部分线圈绕组的功率耗散源。 近组线圈绕组和远端线圈绕组分别靠近和远离功率源，A冷却系统有一个高温冷却站和一个低温冷却站。 高温冷却站主要冷却近组线圈绕组。 低温冷却站主要冷却远程组的线圈绕组。 近距离和远程组可选地由不同的超导材料制成。 因此，实现了允许较便宜的磁体设计的附加自由度。
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7.发明授权MR apparatus and gradient saturation method for suppressing MR signals from peripheral regions situated outside an isocenter 失效用于抑制位于等角点外部的周边区域的MR信号的MR装置和梯度饱和方法公开(公告)号：US06714011B1
公开(公告)日：2004-03-30
申请号：US09596215
申请日：2000-06-19
IPC分类号： G01V300
CPC分类号： G01R33/482 , G01R33/4838
摘要： The invention relates to an MR method wherein disturbing MR signals from peripheral regions outside the isocenter are suppressed in that a location-dependent, brief, steady magnetic field is produced simultaneously with an RF pulse. When the field strength of the magnetic field in the peripheral regions is either larger or smaller than that at the isocenter, it can be achieved that exclusively the nuclear magnetization in the peripheral regions is excited, which magnetization can subsequently be dephased. The subsequent MR sequence then influences only the region around the isocenter.
摘要翻译： 本发明涉及一种MR方法，其中抑制了来自等角点之外的外围区域的MR信号，因为与RF脉冲同时产生位置相关的简短的稳定磁场。 当外围区域的磁场的场强大于或小于等角点处的磁场强度时，可以实现仅外围区域的核磁化被激发，随后磁化可以被去相位。 随后的MR序列仅影响等角点周围的区域。
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公开(公告)号：US10173077B2
公开(公告)日：2019-01-08
申请号：US13131476
申请日：2009-11-19
摘要： A therapeutic apparatus comprising: a magnetic resonance imaging system adapted for acquiring a set of magnetic resonance imaging data in an imaging zone, wherein the magnetic resonance imaging system comprises a means for generating a magnetic field, a guiding means adapted for guiding a beam of charged particles to a target zone within a subject such that the beam encloses an angle with the magnetic field lines of the magnetic field within the imaging zone, the angle being between 0 degrees and 30 degrees, wherein the imaging zone comprises the target zone, a zone determination means for determining the location of the target zone within the subject using the set of magnetic resonance imaging data.
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公开(公告)号：US09664763B2
公开(公告)日：2017-05-30
申请号：US14118910
申请日：2012-05-31
IPC分类号： G01V3/00 , G01R33/56 , G01R33/48 , A61N5/10 , G01R33/3873 , G01R33/3875
CPC分类号： G01R33/56 , A61N5/1049 , A61N2005/1055 , G01R33/3873 , G01R33/3875 , G01R33/4808
摘要： A method of correcting a magnetic field of an MRI radiotherapy apparatus (300) includes a magnetic resonance imaging system (302) and a radiation therapy system (304). The MRI system includes a magnet (306) for generating the magnetic field within an imaging zone 318. The magnet generates a magnetic field with a zero crossing (346, 404) outside of the imaging zone. The medical apparatus further comprises a gantry (332) configured for rotating a ferromagnetic component (336, 510) about a rotational axis (333). The method comprises the step of installing (100, 200) a magnetic correcting element (348, 900, 1000) located on a radial path (344, 504) perpendicular to the rotational axis. The magnetic correcting element is positioned on the radial path such that change in the magnetic field within the imaging zone due to the ferromagnetic component is reduced. The method further comprises repeatedly: measuring (102, 202, 1204) the magnetic field within the imaging zone; determining (104, 204, 1206) the change in the magnetic field in the imaging zone; and adjusting (106, 206, 1208) the position of the magnetic correcting element along the radial path if the change in the magnetic field is above a predetermined threshold.
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公开(公告)号：US20140084926A1
公开(公告)日：2014-03-27
申请号：US14118910
申请日：2012-05-31
IPC分类号： G01R33/56
CPC分类号： G01R33/56 , A61N5/1049 , A61N2005/1055 , G01R33/3873 , G01R33/3875 , G01R33/4808
摘要： A method of correcting a magnetic field of an MRI radiotherapy apparatus (300) comprising a magnetic resonance imaging system (302) and a radiation therapy system (304). The MRI system includes a magnet (306) for generating the magnetic field within an imaging zone 318. The magnet generates a magnetic field with a zero crossing (346, 404) outside of the imaging zone. The medical apparatus further comprises a gantry (332) configured for rotating a ferromagnetic component (336, 510) about a rotational axis (333). The method comprises the step of installing (100, 200) a magnetic correcting element (348, 900, 1000) located on a radial path (344, 504) perpendicular to the rotational axis. The magnetic correcting element is positioned on the radial path such that change in the magnetic field within the imaging zone due to the ferromagnetic component is reduced. The method further comprises repeatedly: measuring (102, 202, 1204) the magnetic field within the imaging zone; determining (104, 204, 1206) the change in the magnetic field in the imaging zone; and adjusting (106, 206, 1208) the position of the magnetic correcting element along the radial path if the change in the magnetic field is above a predetermined threshold.
摘要翻译： 一种校正包括磁共振成像系统（302）和放射治疗系统（304）的MRI放射治疗装置（300）的磁场的方法。 MRI系统包括用于在成像区域318内产生磁场的磁体（306）。磁体在成像区域外部产生具有零交叉（346,404）的磁场。 医疗设备还包括构造成围绕旋转轴线（333）旋转铁磁部件（336,510）的台架（332）。 该方法包括安装（100,200）位于垂直于旋转轴线的径向路径（344,504）上的磁性校正元件（348,900,1000）的步骤。 磁性校正元件位于径向路径上，使得由于铁磁性成分引起的成像区域内的磁场的变化减小。 该方法还包括：重复地：测量（102,202,1204）成像区域内的磁场; 确定（104,204,1206）所述成像区域中的磁场的变化; 以及如果所述磁场的变化高于预定阈值，则调整所述磁修正元件沿所述径向路径的位置（106,206,1208）。
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