公开(公告)号：US06353319B1

公开(公告)日：2002-03-05

申请号：US09343848

申请日：1999-06-30

申请人： Peter Dietz ,  Rudolf Roeckelein ,  Winfried Arz

发明人： Peter Dietz ,  Rudolf Roeckelein ,  Winfried Arz

IPC分类号： G01V300

CPC分类号： G01R33/3854

摘要： A magnetic resonance apparatus has a gradient tube at which at least one gradient coil with current flowing therein in operation is arranged, and at which a number of elements for generating a force acting on the gradient tube as needed are arranged, with the positions of the elements being selected dependent at least on the vibratory mode of the gradient tube, so that a counteracting mode is excited given drive of the elements. The elements serving for the excitation of X and/or Y modes are distributed in the middle and around the circumference of the gradient tube with respect to the length of the gradient tube and/or the elements serving for the excitation of the Z mode are distributed along the length and the circumference of the gradient tube.

摘要翻译： 磁共振装置具有梯度管，在该梯度管上布置有至少一个具有在其中流动的电流的梯度线圈，并且根据需要设置多个用于产生作用在梯度管上的力的元件，其中， 至少根据梯度管的振动模式来选择元件，使得在元件的驱动下激发抵消模式。 用于激发X和/或Y模式的元件相对于梯度管的长度分布在梯度管的中间和周围，并且/或用于Z模式的激发的元件被分布 沿着梯度管的长度和周长。

公开(公告)号：US06396272B1

公开(公告)日：2002-05-28

申请号：US09488719

申请日：2000-01-20

申请人： Peter Dietz ,  Winfried Arz ,  Rudolf Roeckelein

发明人： Peter Dietz ,  Winfried Arz ,  Rudolf Roeckelein

IPC分类号： G01V300

CPC分类号： G01R33/3854

摘要： In a method for the operation of a magnetic resonance apparatus having at least one gradient coil and elements for generating a force acting on the gradient tube, with which natural oscillation modes of the gradient tube are excited, so as to oppose oscillations of the gradient tube produced by Lorentz forces, drive signals are supplied for the excitation of the elements, and the amplitudes and/or the phases of the drive signals are varied for adjusting the force generated by the elements and acting on the gradient tube so as to compensate modifications of the oscillatory behavior of the gradient tube. The drive signals are varied dependent on at least one measured value representing a criterion for the change of the oscillatory behavior.

摘要翻译： 在用于操作具有至少一个梯度线圈的磁共振装置的方法和用于产生作用在梯度管上的力的元件的情况下，梯度管的自然振荡模式被激发，从而与梯度管的振荡相对 由洛伦兹力产生的驱动信号被提供用于元件的激励，并且变化驱动信号的振幅和/或相位以调节由元件产生的力并作用在梯度管上，以补偿 梯度管的振荡行为。 驱动信号取决于代表振荡行为变化的标准的至少一个测量值。

公开(公告)号：US20050258923A1

公开(公告)日：2005-11-24

申请号：US10510597

申请日：2003-03-31

申请人： Winfried Arz ,  Peter Dietz ,  Peter Distler ,  Udo Franzke ,  Matthias Weber

发明人： Winfried Arz ,  Peter Dietz ,  Peter Distler ,  Udo Franzke ,  Matthias Weber

IPC分类号： G01R33/385 ,  H01F1/00

CPC分类号： G01R33/3854

摘要： A magnetic resonance tomography device, wherein vibrations of device components, particularly in the low frequency range, are attenuated, as a magnet body surrounded by a magnet shell, which surrounds and defines an inner area. A gradient coil system is disposed in the inner area and an inner encapsulation cylinder also is disposed therein. The magnetic shell and the gradient coil system are externally and acoustically sealed from the inner encapsulation cylinder, and from a capsule. The capsule is formed as a three-layer system, including a cover layer, a full foam layer and a partial foam layer.

摘要翻译： 一种磁共振断层摄影装置，其中特别是在低频范围内的装置部件的振动被衰减，作为围绕并限定内部区域的由磁体壳包围的磁体。 梯度线圈系统设置在内部区域中，并且内部密封圆筒也设置在其中。 磁性壳体和梯度线圈系统从内部密封圆筒和胶囊外部和声学密封。 胶囊形成为三层系统，包括覆盖层，全泡沫层和部分泡沫层。

公开(公告)号：US06831461B2

公开(公告)日：2004-12-14

申请号：US10200416

申请日：2002-07-22

申请人： Winfried Arz ,  Franz Boemmel ,  Peter Dietz ,  Matthias Weber

发明人： Winfried Arz ,  Franz Boemmel ,  Peter Dietz ,  Matthias Weber

IPC分类号： G01V300

CPC分类号： G01R33/3854

摘要： In an MR tomography apparatus damping laminated sheets are provided for reducing vibrations The MR tomography apparatus has a magnet body which is surrounded by a magnet housing which surrounds and delimits an interior volume. A gradient coil system is located in this interior volume. On an inner side of the magnet housing that delimits the interior volume, a damping laminated sheet structure is provided for absorbing acoustic vibrations which are produced on switching of the gradient coil system.

摘要翻译： 在MR断层摄影装置中，设置阻尼层叠片以减少振动。MR断层摄影装置具有由围绕并限定内部容积的磁体壳体围绕的磁体。 梯度线圈系统位于该内部容积中。 在限定内部容积的磁体外壳的内侧，提供阻尼层叠片结构，用于吸收在梯度线圈系统切换时产生的声振动。

公开(公告)号：US07053744B2

公开(公告)日：2006-05-30

申请号：US10510597

申请日：2003-03-31

申请人： Winfried Arz ,  Peter Dietz ,  Peter Distler ,  Udo Franzke ,  Matthias Weber

发明人： Winfried Arz ,  Peter Dietz ,  Peter Distler ,  Udo Franzke ,  Matthias Weber

IPC分类号： H01F5/00

CPC分类号： G01R33/3854

摘要： A magnetic resonance tomography device, wherein vibrations of device components, particularly in the low frequency range, are attenuated, as a magnet body surrounded by a magnet shell, which surrounds and defines an inner area. A gradient coil system is disposed in the inner area and an inner encapsulation cylinder also is disposed therein. The magnetic shell and the gradient coil system are externally and acoustically sealed from the inner encapsulation cylinder, and from a capsule. The capsule is formed as a three-layer system, including a cover layer, a full foam layer and a partial foam layer.

摘要翻译： 一种磁共振断层摄影装置，其中特别是在低频范围内的装置部件的振动被衰减，作为围绕并限定内部区域的由磁体壳包围的磁体。 梯度线圈系统设置在内部区域中，并且内部密封圆筒也设置在其中。 磁性壳体和梯度线圈系统从内部密封圆筒和胶囊外部和声学密封。 胶囊形成为三层系统，包括覆盖层，全泡沫层和部分泡沫层。

公开(公告)号：US20130162249A1

公开(公告)日：2013-06-27

申请号：US13723423

申请日：2012-12-21

申请人： Peter Dietz ,  Andreas Krug

发明人： Peter Dietz ,  Andreas Krug

IPC分类号： G01R33/44 ,  G01R33/28

CPC分类号： G01R33/44 ,  G01R33/28 ,  G01R33/3854 ,  G01R33/4215

摘要： The present embodiments relate to a method for reducing mechanical vibrations in a magnetic resonance imaging system that includes a gradient system having a gradient coil body and an electrically conductive shroud that at least partly encloses the gradient coil body. The method includes determining a mechanical natural vibration mode of the gradient coil body in the magnetic resonance imaging system, and determining excitation force components for the natural vibration mode. The method also includes determining electrically conductive areas of the gradient system, which during operation of the magnetic resonance imaging system, generate a Lorentz force component that contributes to the excitation force components. The method further includes modifying the determined electrically conductive areas such that a minimal number of the Lorentz force components coincide with the excitation force components.

摘要翻译： 本实施例涉及一种用于减小磁共振成像系统中的机械振动的方法，该系统包括具有梯度线圈体和至少部分地围绕梯度线圈体的导电护罩的梯度系统。 该方法包括确定磁共振成像系统中的梯度线圈体的机械自然振动模式，以及确定用于固有振动模式的激励力分量。 该方法还包括确定梯度系统的导电区域，其在磁共振成像系统的操作期间产生有助于激发力分量的洛伦兹力分量。 该方法还包括修改确定的导电区域，使得最小数量的洛伦兹力分量与激励力分量重合。

公开(公告)号：US20100256968A1

公开(公告)日：2010-10-07

申请号：US12725825

申请日：2010-03-17

申请人： Peter Dietz ,  Andreas Krug

发明人： Peter Dietz ,  Andreas Krug

IPC分类号： G06F17/50

CPC分类号： G01R33/385 ,  G01R33/56572 ,  H01F5/00

摘要： In a computerized, automated method to determine the conductor structure of a gradient coil of a magnetic resonance device, the conductor structure is determined depending on the theoretical oscillation response of at least one metallic structure of the magnetic resonance device that is arranged adjacent to the gradient coil at the installation point, with the oscillation response of the metallic structure being determined dependent on theoretical eddy currents generated in the structure by the gradient coil.

摘要翻译： 在用于确定磁共振装置的梯度线圈的导体结构的计算机化的自动化方法中，导体结构根据与梯度相邻布置的磁共振装置的至少一个金属结构的理论振荡响应来确定 线圈在安装点，金属结构的振荡响应取决于梯度线圈在结构中产生的理论涡流。

公开(公告)号：US07755358B2

公开(公告)日：2010-07-13

申请号：US12127885

申请日：2008-05-28

申请人： Peter Dietz ,  Graham Hutton ,  Andreas Krug ,  Axel Vom Endt

发明人： Peter Dietz ,  Graham Hutton ,  Andreas Krug ,  Axel Vom Endt

IPC分类号： G01V3/00

CPC分类号： G01R33/3815 ,  G01R33/288 ,  G01R33/381 ,  G01R33/3854

摘要： The method for determination of the design of the basic magnet of a magnetic resonance apparatus with at least one gradient coil system, the design of the basic magnet is determined by taking into consideration forces acting on the at least one gradient coil system that may lead to vibrations of the gradient coil system due to switching processes of the gradient coil system in the field of the basic magnet.

摘要翻译： 用至少一个梯度线圈系统确定磁共振装置的基本磁体的设计的方法，通过考虑到作用在至少一个梯度线圈系统上的力来确定基本磁体的设计，这些力可能导致 由于梯形线圈系统在基本磁体领域的切换过程，梯度线圈系统的振动。

公开(公告)号：US20090295519A1

公开(公告)日：2009-12-03

申请号：US12127885

申请日：2008-05-28

申请人： Peter Dietz ,  Graham Hutton ,  Andreas Krug ,  Axel Vom Endt

发明人： Peter Dietz ,  Graham Hutton ,  Andreas Krug ,  Axel Vom Endt

IPC分类号： H01F5/00

CPC分类号： G01R33/3815 ,  G01R33/288 ,  G01R33/381 ,  G01R33/3854

摘要： The method for determination of the design of the basic magnet of a magnetic resonance apparatus with at least one gradient coil system, the design of the basic magnet is determined by taking into consideration forces acting on the at least one gradient coil system that may lead to vibrations of the gradient coil system due to switching processes of the gradient coil system in the field of the basic magnet.

摘要翻译： 用至少一个梯度线圈系统确定磁共振装置的基本磁体的设计的方法，通过考虑到作用在至少一个梯度线圈系统上的力来确定基本磁体的设计，这些力可能导致 由于梯形线圈系统在基本磁体领域的切换过程，梯度线圈系统的振动。

公开(公告)号：US07511499B2

公开(公告)日：2009-03-31

申请号：US11649617

申请日：2007-01-04

申请人： Peter Dietz ,  Ralph Kimmlingen ,  Johann Schuster ,  Stefan Stocker

发明人： Peter Dietz ,  Ralph Kimmlingen ,  Johann Schuster ,  Stefan Stocker

IPC分类号： G01V3/00

CPC分类号： G01R33/3815 ,  G01R33/381 ,  G01R33/3873

摘要： Magnetic resonance device comprising a preferably essentially cylindrical vacuum housing containing a magnet together with a cooling device, said vacuum housing having an inner wall, an outer wall and two end walls, the inner wall and/or one or each end wall being fashioned as a composite component consisting of one or more components made of a non-metallic composite material and a plurality of metal components serving to provide mechanical reinforcement and having a lamellar or annular form for forming the inner wall or having the form of a segment of a circle for forming an end wall such that a reduction in eddy currents is produced.

摘要翻译： 磁共振装置包括优选地基本上圆柱形的真空壳体，其包含磁体和冷却装置，所述真空壳体具有内壁，外壁和两个端壁，所述内壁和/或一个或每个端壁被形成为 由一种或多种由非金属复合材料制成的部件和多个用于提供机械增强的金属部件组成的复合部件，并且具有用于形成内壁的片状或环形形式或具有圆形段的形式 形成端壁，从而产生涡流的减小。