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1. 发明授权

US5814993A Magnet arrangement for a diagnostic nuclear magnetic resonance apparatus 失效
标题翻译：用于诊断核磁共振装置的磁铁装置
公开(公告)号：US5814993A
公开(公告)日：1998-09-29
申请号：US819777
申请日：1997-03-18
申请人： Georg Frese , Horst Siebold
发明人： Georg Frese , Horst Siebold
IPC分类号： G01R33/381 , A61B5/055 , G01R33/38 , G01R33/385 , H01F6/00 , G01V3/00
CPC分类号： G01R33/381 , G01R33/3806 , G01R33/3815
摘要： A magnet arrangement for a diagnostic nuclear magnetic resonance apparatus has a first system for generating a uniform magnetic field in a first imaging volume, the first imaging volume being arranged inside the first system, and a second system for generating a uniform magnetic field in a second imaging volume is in interactive connection with the first system. The second imaging volume is arranged between the first system and the second system.
摘要翻译：用于诊断核磁共振装置的磁体装置具有用于在第一成像体积中产生均匀磁场的第一系统，第一成像体积布置在第一系统内部，第二系统用于在第二系统中产生均匀的磁场成像体积与第一系统交互式连接。第二成像体积被布置在第一系统和第二系统之间。

2. 发明授权

US4743853A Nuclear spin tomograph 失效
标题翻译：核自动断层扫描
公开(公告)号：US4743853A
公开(公告)日：1988-05-10
申请号：US742811
申请日：1985-06-10
申请人： Georg Frese
发明人： Georg Frese
IPC分类号： A61B10/00 , A61B5/055 , G01R33/385 , G01R33/3873 , G06G7/54 , H01F5/00 , G01R33/08
CPC分类号： G01R33/3873
摘要： The invention relates to a nuclear spin tomograph in which means for the homogenization of the normally present magnetic fields are provided. These means are formed by iron plates (24a, 26a, 28a), whose form, size, arrangement and number are chosen accordingly. The iron plates (24a, 26a, 28a) may be applied parallel to the longitudinal direction of the housing on the housing sides and in star form on one of the end walls (20) of the housing (23).
摘要翻译：本发明涉及一种核自动断层扫描仪，其中提供了用于均匀化通常存在的磁场的装置。这些装置由铁板（24a，26a，28a）形成，其形状，尺寸，布置和数量被相应地选择。铁板（24a，26a，28a）可以平行于壳体的壳体侧面上的壳体的纵向并以星形形式施加在壳体（23）的一个端壁（20）上。

3. 发明授权

US5708362A Magnet arrangement for a diagnostic magnetic resonance apparatus 失效
标题翻译：用于诊断磁共振装置的磁铁装置
公开(公告)号：US5708362A
公开(公告)日：1998-01-13
申请号：US740488
申请日：1996-10-30
申请人： Georg Frese , Michael Sellers
发明人： Georg Frese , Michael Sellers
IPC分类号： G01R33/381 , A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/421 , H01F7/20 , G01V3/00
CPC分类号： G01R33/3806 , G01R33/381 , G01R33/3815 , G01R33/421
摘要： A magnet arrangement for a diagnostic magnetic resonance apparatus has an electromagnet arrangement for the production of a homogeneous magnetic field oriented along an axis in an imaging volume. The electromagnet arrangement has first and second windings arranged opposite one another at a distance from one another, transverse to the axis. In relation to the axis, an axial access and a transverse access to the imaging volume are present between the first and second windings.
摘要翻译：用于诊断磁共振装置的磁体装置具有用于产生沿着成像体积的轴定向的均匀磁场的电磁体装置。电磁铁装置具有彼此相对设置的彼此间隔一定距离的横向于轴线的第一和第二绕组。相对于轴，在第一和第二绕组之间存在轴向通路和对成像体积的横向通路。

4. 发明授权

US07146033B2 Method for determining distortions in an image and calibration object therefor 有权
公开(公告)号：US07146033B2
公开(公告)日：2006-12-05
申请号：US10074655
申请日：2002-02-13
申请人： Gerhard Brinker , Georg Frese , Franz Hebrank
发明人： Gerhard Brinker , Georg Frese , Franz Hebrank
IPC分类号： G06K9/00
CPC分类号： G06T5/006 , G01R33/56572
摘要： In a the method for determining distortions in an image that can be generated with an imaging system from a subject arranged in an imaging volume of the imaging system, a first region of the imaging volume is presented undistorted in the image and a second region of the imaging volume is presented distorted in the image. Using the imaging system, an image of at least three markings that have a known spatial position relative to one another is produced. A first and a second of the three markings are arranged in the first region and a third of the three markings is arranged in the second region. The position of the imaged markings in the image is determined. An ideal position of the third marking in the image is determined from its known spatial arrangement with respect to the first and second markings. A positional difference of the imaged third marking from its ideal position is identified. The positional difference represents a criterion for the distortion.

5. 发明授权

US5717333A Magnet arrangement for a diagnostic magnetic resonance apparatus 失效
标题翻译：用于诊断磁共振装置的磁铁装置
公开(公告)号：US5717333A
公开(公告)日：1998-02-10
申请号：US719412
申请日：1996-09-24
申请人： Georg Frese , Horst Siebold
发明人： Georg Frese , Horst Siebold
IPC分类号： G01R33/385 , A61B5/055 , G01R33/38 , H01F7/20 , G01V3/00
CPC分类号： G01R33/3806
摘要： In a magnet arrangement for a diagnostic magnetic resonance apparatus, first and second units operate in combination to generate a magnetic field, the second unit being arranged at a distance from the first, the units determining a region having a substantially homogeneous magnetic field, which is arranged between the two magnetic field-generating units. An access to the region is oriented obliquely to the spacing of the two magnetic field-generating units. The magnetic field-generating units respectively have first and second outer transversal dimensions with the second outer transversal dimension being smaller than the first outer transversal dimension. The first magnetic field-generating unit has an opening that is fashioned as an additional access to the region.
摘要翻译：在用于诊断磁共振装置的磁体布置中，第一和第二单元组合起来产生磁场，第二单元布置在与第一单元相距一定距离处，单元确定具有基本上均匀的磁场的区域，其是布置在两个磁场产生单元之间。对该区域的访问倾斜于两个磁场产生单元的间隔。磁场发生单元分别具有第一和第二外部横向尺寸，第二外部横向尺寸小于第一外部横向尺寸。第一磁场产生单元具有作为对该区域的附加访问的形式的开口。

6. 发明授权

US5198769A Tesseral gradient coil for a nuclear magnetic resonance tomography apparatus 失效
标题翻译：用于核磁共振断层扫描仪的梯形线圈
公开(公告)号：US5198769A
公开(公告)日：1993-03-30
申请号：US586875
申请日：1990-09-24
申请人： Georg Frese , Eckart Stetter
发明人： Georg Frese , Eckart Stetter
IPC分类号： G01R33/20 , A61B5/055 , G01R33/385 , G01R33/421
CPC分类号： G01R33/385 , G01R33/3854 , G01R33/421
摘要： A tesseral gradient coil for use in a nuclear magnetic resonance tomography apparatus is disposed in the hollow-cylindrical interior of the magnet system which generates the fundamental magnetic field, with one segment of each turn of the gradient coil lying on a small radius and one segment lying on a large radius, with reference to the cylinder access. The parasitic magnetic field which is unavoidably generated by the gradient coil, and which induces currents in the examination subject and in the cryostat of the fundamental field magnet system, is significantly reduced by this coil arrangement. The structure of the gradient coil is particularly suitable for use in the echo planar method, wherein the gradients must be switched rapidly and induced currents are therefore especially disturbing.
摘要翻译：用于核磁共振断层摄影装置的梯形梯度线圈设置在磁体系统的中空圆柱形内部，其产生基本磁场，梯形线圈的每一圈的一个段位于小半径上，一个段躺在一个大的半径，参考气缸进入。通过该线圈布置，可以显着地减少由梯度线圈不可避免地产生并且在检查对象和基波场磁体系统的低温恒温器中产生电流的寄生磁场。梯度线圈的结构特别适用于回波平面方法，其中梯度必须快速切换，因此感应电流特别令人不安。

7. 发明授权

US4748413A Structure for homogenizing the fundamental field in a nuclear magnetic resonance examination apparatus 失效
标题翻译：用于核磁共振检查装置中基本场均匀化的结构
公开(公告)号：US4748413A
公开(公告)日：1988-05-31
申请号：US926226
申请日：1986-11-03
申请人： Georg Frese , Karl-Georg Ladwein
发明人： Georg Frese , Karl-Georg Ladwein
IPC分类号： G01R33/3873 , G01R33/20
CPC分类号： G01R33/3873
摘要： A structure for homogenizing the fundamental field in a nuclear magnetic resonance examination apparatus has a plurality of rods consisting at least partially of ferromagnetic material and a structure for supporting the rods in the fundamental magnetic field. The supporting structure may be in the form of rings with the rods extending therethrough at selected positions, either individually or in groups. The location, cross-section, length, shape and number of rods are selected as needed for homogenizing the fundamental field.
摘要翻译：用于使核磁共振检查装置中的基本场均匀化的结构具有至少部分由铁磁材料构成的多个杆和用于将杆支撑在基本磁场中的结构。支撑结构可以是环的形式，其中杆在单独地或分组地在选定位置延伸穿过其中。根据需要选择杆的位置，横截面，长度，形状和数量，以使基础场均匀化。

8. 发明授权

US4486711A Gradient field coil system for nuclear spin tomography 失效
标题翻译：用于核自旋断层扫描的梯度场线圈系统
公开(公告)号：US4486711A
公开(公告)日：1984-12-04
申请号：US406454
申请日：1982-08-09
申请人： Georg Frese , Horst Siebold
发明人： Georg Frese , Horst Siebold
IPC分类号： A61B10/00 , A61B5/055 , G01R33/20 , G01R33/385 , H01F5/00 , H01F7/06 , G01R33/08
CPC分类号： A61B5/055 , G01R33/385
摘要： A gradient coil system for an image-generating, nuclear magnetic resonance tomographic apparatus, particularly a zeugmatographic apparatus. The gradient coil system is arranged on a hollow cylindrical support body having an axis which extends along the z-direction of an x, y, z coordinate system which has an origin in the center of an imaging region. The gradient coil system contains, in addition to ring-shaped individual coils for generating field gradients which are substantially constant in the imaging region, a plurality of saddle-shaped coils which are symmetrically arranged through the imaging center for generating field gradients in the x and y directions. The saddle-shaped coils have straight conductor sections extending in the z-direction and arc-shaped conductor sections which extend perpendicularly with respect to the z-axis and along the circumferential direction of the support body. In accordance with the invention, a further arc-shaped conductor section is connected in parallel with the arc-shaped conductor sections, the further arc-shaped conductor section facing a plane of symmetry. All of the arc-shaped conductor sections are displaced in the z-direction from the plane of symmetry by predetermined distances, and each arc-shaped conductor section has an electric linkage factor which is responsive to the distance between the particular arc-shaped conductor section and the plane of symmetry.
摘要翻译：用于图像产生的核磁共振断层摄影装置的梯度线圈系统，特别是色谱仪。梯度线圈系统布置在具有沿着x，y，z坐标系的z方向延伸的轴线的中空圆柱形支撑体上，该坐标系在成像区域的中心具有原点。梯度线圈系统除了用于产生在成像区域中基本恒定的场梯度的环形单独线圈之外，还包括通过成像中心对称布置的多个鞍形线圈，用于在x和 y方向。鞍状线圈具有在z方向上延伸的直的导体部分和相对于z轴垂直且沿着支撑体的圆周方向延伸的弧形导体部分。根据本发明，另外的弧形导体部分与弧形导体部分并联连接，另外的弧形导体部分面对对称平面。所有的弧形导体部分在z方向上从对称平面移位预定距离，并且每个弧形导体部分具有响应于特定弧形导体部分之间的距离的电连接因子和对称平面。

9. 发明授权

US4468622A Gradient coil system for nuclear magnetic resonance apparatus 失效
标题翻译：用于核磁共振设备的梯度线圈系统
公开(公告)号：US4468622A
公开(公告)日：1984-08-28
申请号：US406455
申请日：1982-08-09
申请人： Georg Frese , Horst Siebold
发明人： Georg Frese , Horst Siebold
IPC分类号： A61B10/00 , A61B5/055 , G01R33/20 , G01R33/385 , H01F5/00 , H01F7/20 , G01R33/08
CPC分类号： A61B5/055 , G01R33/385 , H01F7/20
摘要： A gradient coil system for an image-generating, nuclear magnetic resonance tomographic apparatus, particularly a zeugmatographic apparatus. The gradient coil system is arranged on a support body of rotational symmetry, illustratively a hollow cylindrical support body, having an axis which extends along the z-direction of an x, y, z coordinate system which has an origin in the center of an imaging region. The gradient coil system contains two pairs of toroidal individual coils which are arranged symmetrically with respect to an x-y plane which extends through the center of the imaging region and which are arranged perpendicular to the z-axis. The direction of current flow in the individual coils of a coil pair is opposite to the direction of flow in the individual coils of the other coil pair. Moreover, further sets of coils are provided for generating field gradient G.sub.x in the x-direction, and G.sub.y in the y-direction. The hollow cylindrical shape of the support body on which the individual coils are arranged permit an imaging region having a substantially spherical volume with a substantially constant field gradient G.sub.z to be achieved. Each of the coils has a predetermined linkage factor which corresponds to the product of the current flowing through the number of coil turns of the coil. Those coils which are arranged further from the plane of symmetry have a substantially larger linkage factor than the coils which are nearer to the plane of symmetry.
摘要翻译：用于图像产生的核磁共振断层摄影装置的梯度线圈系统，特别是色谱仪。梯度线圈系统布置在旋转对称的支撑体上，示例性地为中空圆柱形支撑体，其具有沿x，y，z坐标系的z方向延伸的轴线，该坐标系具有来自成像中心的原点地区。梯度线圈系统包含两对环形单独线圈，其相对于延伸穿过成像区域的中心并且垂直于z轴布置的x-y平面对称地布置。线圈对的各个线圈中的电流流动方向与另一个线圈对的各个线圈中的流动方向相反。此外，提供了另外的线圈组，用于在x方向上产生场梯度Gx，并且在y方向上产生Gy。支撑体的中空圆柱形状，其上布置各个线圈允许实现具有基本上恒定的场梯度Gz的基本上球形的体积的成像区域。每个线圈具有对应于流过线圈的线圈匝数的电流的乘积的预定的联动系数。从对称平面排列的那些线圈具有比接近对称平面的线圈大得多的联动系数。

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