公开(公告)号：US08860539B2

公开(公告)日：2014-10-14

申请号：US13063875

申请日：2010-08-27

申请人： Dimitrios Sakellariou ,  Cédric Hugon ,  Guy Aubert

发明人： Dimitrios Sakellariou ,  Cédric Hugon ,  Guy Aubert

IPC分类号： H01F3/00 ,  H01F7/00 ,  H01F7/02 ,  G01R33/30 ,  G01R33/383

CPC分类号： G01R33/383 ,  G01R33/307 ,  H01F7/0278

摘要： A magnetized structure that induces in a central area of interest a homogeneous magnetic field of predetermined orientation relative to a longitudinal axis (z) of the structure comprises at least two magnetized rings (110, 120) disposed symmetrically relative to a plane (P) that is perpendicular to the longitudinal axis (z) and that contains the central area of interest, and at least one median annular magnetized structure disposed at least partly between the two magnetized rings (110, 120) and also disposed symmetrically relative to the plane (P) of symmetry, one of the two magnetized rings (110) being magnetized radially relative to the longitudinal axis (z) with divergent magnetization and the other of the two magnetized rings (120) being magnetized radially relative to the longitudinal axis (z) with convergent magnetization, and the median annular magnetized structure being magnetized with an orientation different from that of the magnetization of the two magnetized rings (110, 120). The median annular magnetized structure comprises at least one magnetized ring (150) having a magnetization distribution of orientation that varies as in Halbach dipoles and the first two magnetized rings (110, 120) and the median annular magnetized structure are each divided into individual components in the form of regularly distributed identical sectors.

摘要翻译： 感兴趣的中心区域的磁化结构相对于该结构的纵向轴线（z）具有预定取向的均匀磁场包括相对于平面（P）对称设置的至少两个磁化环（110,120），所述至少两个磁化环 垂直于所述纵向轴线（z）并且包含所述感兴趣的中心区域，以及至少一个中间环形磁化结构，其至少部分地设置在所述两个磁化环（110,120）之间，并且还相对于所述平面（P ）对称，两个磁化环（110）之一相对于纵向轴线（z）径向磁化，具有发散磁化，并且两个磁化环（120）中的另一个相对于纵向轴线（z）径向磁化， 收敛磁化，并且中间环形磁化结构被磁化，其方向不同于两个磁化环（110,120）的磁化强度 ）。 中间环形磁化结构包括至少一个磁化环（150），其具有如Halbach偶极子中变化的取向的磁化分布，并且前两个磁化环（110,120）和中间环形磁化结构各自被分成 定期分发相同部门的形式。

公开(公告)号：US08773230B2

公开(公告)日：2014-07-08

申请号：US13063870

申请日：2010-08-27

申请人： Dimitrios Sakellariou ,  Cédric Hugon ,  Guy Aubert

发明人： Dimitrios Sakellariou ,  Cédric Hugon ,  Guy Aubert

IPC分类号： H01F3/00 ,  H01F7/00 ,  H01F7/02

CPC分类号： H01F7/0278 ,  G01R33/383

摘要： The magnetized structure that induces in a central area of interest a homogeneous magnetic field oriented along a longitudinal axis (z) of the structure comprises first and second magnetized rings (111, 121) disposed symmetrically relative to a plane (P) that is perpendicular to said longitudinal axis (z) and that contains said central area of interest, and one median annular magnetized structure (330) disposed between the first and second magnetized rings (111, 121) and also disposed symmetrically relative to the plane (P) of symmetry. The first magnetized ring (111) is magnetized radially relative to the longitudinal axis (z) with divergent magnetization, the second magnetized ring (121) is magnetized radially relative to the longitudinal axis (z) with convergent magnetization, and the median annular magnetized structure (330) is magnetized along the longitudinal axis (z). The median annular magnetized structure (330) is divided into at least two slices (331A, 331B, 332A, 332B) along the longitudinal axis (z) and the first and second magnetized rings (111, 121) and the various slices (331A, 331B, 332A, 332B) of the median magnetized structure (130) are each divided into identical components in the form of regularly distributed sectors.

摘要翻译： 在沿着该结构的纵向轴线（z）定向的均匀磁场的感兴趣的中心区域中感应的磁化结构包括相对于垂直于（...）的平面（P）对称设置的第一和第二磁化环（111,121） 所述纵向轴线（z）并且包含所述中心区域，以及设置在所述第一和第二磁化环（111,121）之间并且相对于对称平面（P）对称设置的一个中间环形磁化结构（330） 。 第一磁化环（111）相对于具有发散磁化的纵向轴线（z）被径向磁化，第二磁化环（121）相对于纵向轴线（z）径向磁化，并且中心环形磁化结构 （330）沿纵轴（z）被磁化。 中间环形磁化结构（330）沿着纵向轴线（z）和第一和第二磁化环（111,121）和各种切片（331A，331B，332A，332B）分成至少两个切片（331A，331B，332A，332B） 中间磁化结构（130）的各个部分331B，332A，332B分别以规则分布的扇区的形式分成相同的部件。

公开(公告)号：US20090045894A1

公开(公告)日：2009-02-19

申请号：US12159282

申请日：2006-12-29

申请人： Guy Aubert

发明人： Guy Aubert

IPC分类号： H01F6/00 ,  H01F6/06

CPC分类号： G01R33/3815 ,  Y10T29/49071

摘要： The device for creating a uniform magnetic field in a zone of interest, in particular for nuclear magnetic resonance and magnetic resonance imaging, comprises an arrangement of superconductor coils disposed around a longitudinal axis (z) of the zone of interest. This arrangement of coils comprises at least one stack of a set of modular elements (8) distributed along the longitudinal axis (z), each modular element (8) comprising a rectangular-section conductor of superconductor material that is wound in continuous manner to form of a double pancake coil. The double pancake coil comprises a first single plane pancake coil (10) in the form of a spiral, a second single plane pancake coil (20) in the form of a spiral juxtaposed with and parallel to the first single pancake coil (10), and a transition segment (30) without any internal junction between the first and second single pancake coils (10, 20). Each single pancake coil (10, 20) has a connection end (11, 21) situated at the outer peripheral portion of the pancake coil, and the transition segment (30) enables an offset to be provided along the longitudinal axis (z) that is not less than the transverse dimension of the conductor along said axis.

摘要翻译： 用于在感兴趣区域，特别是用于核磁共振和磁共振成像中产生均匀磁场的装置包括围绕感兴趣区域的纵向轴线（z）设置的超导线圈的布置。 这种线圈布置包括沿着纵向轴线（z）分布的一组模块化元件（8）的至少一个堆叠，每个模块化元件（8）包括以连续方式缠绕形成的超导体材料的矩形截面导体 的双煎饼卷。 双煎饼线圈包括螺旋形式的第一单平面薄饼线圈（10），与第一单个扁平线圈（10）并置并平行的螺旋形式的第二单平面煎饼线圈（20） 和在第一和第二单个扁平线圈（10,20）之间没有任何内部连接处的过渡段（30）。 每个单个扁平线圈（10,20）具有位于煎饼线圈的外周部分处的连接端（11,21），并且过渡段（30）能够沿着纵向轴线（z）设置偏移， 不小于沿着所述轴线的导体的横向尺寸。

公开(公告)号：US07952454B2

公开(公告)日：2011-05-31

申请号：US12159282

申请日：2006-12-29

申请人： Guy Aubert

发明人： Guy Aubert

IPC分类号： H01F1/00

CPC分类号： G01R33/3815 ,  Y10T29/49071

摘要： The device for creating a uniform magnetic field in a zone of interest, in particular for nuclear magnetic resonance and magnetic resonance imaging, comprises an arrangement of superconductor coils disposed around a longitudinal axis (z) of the zone of interest. This arrangement of coils comprises at least one stack of a set of modular elements (8) distributed along the longitudinal axis (z), each modular element (8) comprising a rectangular-section conductor of superconductor material that is wound in continuous manner to form of a double pancake coil. The double pancake coil comprises a first single plane pancake coil (10) in the form of a spiral, a second single plane pancake coil (20) in the form of a spiral juxtaposed with and parallel to the first single pancake coil (10), and a transition segment (30) without any internal junction between the first and second single pancake coils (10, 20). Each single pancake coil (10, 20) has a connection end (11, 21) situated at the outer peripheral portion of the pancake coil, and the transition segment (30) enables an offset to be provided along the longitudinal axis (z) that is not less than the transverse dimension of the conductor along said axis.

摘要翻译： 用于在感兴趣区域，特别是用于核磁共振和磁共振成像中产生均匀磁场的装置包括围绕感兴趣区域的纵向轴线（z）设置的超导线圈的布置。 这种线圈布置包括沿着纵向轴线（z）分布的一组模块化元件（8）的至少一个堆叠，每个模块化元件（8）包括以连续方式缠绕形成的超导体材料的矩形截面导体 的双煎饼卷。 双煎饼线圈包括螺旋形式的第一单平面薄饼线圈（10），与第一单个扁平线圈（10）并置并平行的螺旋形式的第二单平面煎饼线圈（20） 和在第一和第二单个扁平线圈（10,20）之间没有任何内部连接处的过渡段（30）。 每个单个扁平线圈（10,20）具有位于煎饼线圈的外周部分处的连接端（11,21），并且过渡段（30）能够沿着纵向轴线（z）设置偏移， 不小于沿着所述轴线的导体的横向尺寸。

公开(公告)号：US20090096451A1

公开(公告)日：2009-04-16

申请号：US12084082

申请日：2006-10-26

申请人： Guy Aubert

发明人： Guy Aubert

IPC分类号： G01R33/48 ,  G01R33/54

CPC分类号： G01R33/385 ,  G01R33/3856 ,  G01R33/4215

摘要： The nuclear magnetic resonance machine comprises a device (101) for creating an intense main magnetic field B0 in a usable interior space (109) in the form of a tunnel with axis Z, a radio-frequency excitation device that also processes radio-frequency signals emitted in response by a body (150) placed in the usable interior space (109), and a set (110) of solenoidal gradient coils for superimposing on the intense magnetic field B0 components of a additional magnetic field, the gradient coils (111-122) being incorporated into tubes disposed in an annular cylindrical space (130). Between an exterior cryogenic enclosure (102) and the annular cylindrical space (130) a cylindrical screen (104) is disposed along the axis Z comprising a conductive material of low resistance and low magnetoresistance such that negligible induced currents are generated in the exterior cryogenic enclosure (102) while the eddy currents induced in the cylindrical screen (104) contribute to reinforcing the gradients produced by the solenoidal gradient coils (111-122).

摘要翻译： 核磁共振机包括用于在具有轴线Z的隧道形式的可用内部空间（109）中产生强烈的主磁场B0的装置（101），还处理射频信号的射频激励装置 放置在可用内部空间（109）中的主体（150）响应地发射，以及用于叠加在附加磁场的强磁场B0分量上的螺线管梯度线圈组（110），梯度线圈（111- 122）被并入设置在环形圆柱形空间（130）中的管中。 在外部低温外壳（102）和环形圆柱形空间（130）之间，沿着包括低电阻和低磁阻的导电材料的轴线Z设置圆柱形屏（104），使得在外部低温外壳中产生可忽略的感应电流 （102），而在圆筒形筛（104）中感应的涡流有助于加强由螺线管梯度线圈（111-122）产生的梯度。

公开(公告)号：US20070052418A1

公开(公告)日：2007-03-08

申请号：US10571962

申请日：2004-09-02

申请人： Guy Aubert

发明人： Guy Aubert

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/3856 ,  G01R33/3858

摘要： In order to produce field strength gradients (x,y) for a NMR machine, the curve-shaped gradients are substituted by coils arraigned in tubes. Said tubes are distributed on the annular circumference (6) of the examination space of the tunnel NMR machine. Said invention makes it possible to produce at request field strength gradients in all necessary directions by providing each tube with the same set of coil elements and supplying them with selected currents.

摘要翻译： 为了产生核磁共振机器的场强梯度（x，y），曲线形梯度由在管中引出的线圈代替。 所述管分布在隧道NMR机的检查空间的环形圆周（6）上。 所述发明使得可以通过为每个管提供相同的一组线圈元件并向它们提供选定的电流，在所有必要的方向上以要求的场强梯度产生。

公开(公告)号：US5014032A

公开(公告)日：1991-05-07

申请号：US353640

申请日：1989-04-14

申请人： Guy Aubert

发明人： Guy Aubert

IPC分类号： A61B5/055 ,  G01R33/38 ,  G01R33/383 ,  H01F7/02

CPC分类号： H01F7/0278 ,  G01R33/383

摘要： A cylindrical permanent magnet with a longitudinal induced field may be achieved by creating on either side of a zone of interest two annular structures magnetized on the one hand radially with respect to the cylinder axis and on the other hand antisymetrically with respect to the zone of interest. The annular structures may be achieved by arrangements of blocks on polygonal contours. In order to optimize fabrication, the number of blocks in each ring must be higher or equal to four times the number of rings in each structure. The magnet applies particularly to the field of imaging by nuclear magnetic resonance wherein the control logistics had originally been designed for longitudinal induction fields.

摘要翻译： PCT No.PCT / FR87 / 00393 Sec。 371日期：1989年4月14日 102（e）日期1989年4月14日PCT提交1987年10月13日PCT公布。 出版物WO88 / 02924 日期：1988年4月21日。具有纵向感应场的圆柱形永磁体可以通过在感兴趣区域的两侧产生一个相对于气缸轴线径向磁化的环形结构，另一方面通过抗衡 相对于感兴趣的区域。 环形结构可以通过多边形轮廓上的块的布置来实现。 为了优化制造，每个环中的块数必须高于或等于每个结构中环的数量的四倍。 该磁体特别适用于核磁共振成像领域，其中控制物流原本是为纵向感应场设计的。

公开(公告)号：US4999600A

公开(公告)日：1991-03-12

申请号：US353674

申请日：1989-04-14

申请人： Guy Aubert

发明人： Guy Aubert

IPC分类号： A61B5/055 ,  G01R33/28 ,  G01R33/38 ,  G01R33/383 ,  H01F7/02

CPC分类号： G01R33/383 ,  H01F7/0278

摘要： Industrial problems concerning the production of a field of uniform and traverse induction are solved by providing a cylindrical magnet with magnetic blocks of which the internal magnetization is either radial or tangential to the cylinder. Such an arrangement facilitates the fabrication and the magnetization of the blocks. A radial or tangential magnetization distribution produces a transverses field only if the magnetization modulus varies respectively with the cosine or the sine of the localization angle of the block with respect to the direction of induction to be produced. By combining both structures, it is even possible to obtain a magnet having a zero bipolar moment. The variation of the magnetization modulus is obtained by providing composite magnetic bricks. They comprise plates of magnetic materials which are coupled to non-magnetic plates in a proportion dependeing on the reduction of magnetization to be achieved. Such a magnet applies to imaging by nuclear magnetic resonance in the medical field.

摘要翻译： PCT No.PCT / FR87 / 00392 Sec。 371日期：1989年4月14日 102（e）日期1989年4月14日PCT提交1987年10月13日PCT公布。 出版物WO88 / 02923 日期：1988年4月21日。通过提供具有磁性块的圆柱形磁体来解决关于均匀和横向感应场的生产的工业问题，其中内部磁化是圆柱体的径向或切向的。 这种布置有利于块的制造和磁化。 径向或切向磁化分布只有当磁化模量分别随着块的定位角相对于要产生的感应方向的定位角的余弦或正弦而变化时才产生横向场。 通过组合这两种结构，甚至可以获得具有零双极矩的磁体。 通过提供复合磁砖获得磁化模量的变化。 它们包括磁性材料板，它们以一定比例的方式耦合到非磁性板上，这取决于要实现的磁化强度的降低。 这样的磁体适用于医疗领域的核磁共振成像。

公开(公告)号：US4990879A

公开(公告)日：1991-02-05

申请号：US353645

申请日：1989-04-14

申请人： Guy Aubert

发明人： Guy Aubert

IPC分类号： G01R33/383 ,  A61B5/055 ,  G01R33/20 ,  G01R33/38 ,  G01R33/387 ,  H01F7/02

CPC分类号： H01F7/0278 ,  G01R33/383

摘要： Demagnetization effects in any magnetic block are avoided by using a mixed magnetic material comprising a predetermined proportion of permanently magnetizable magnetic material and of non-magnetic material. The proportion is adjusted as a function of the ratio between the demagnetizing excitation and a so-called cut-off excitation of the material, for which the magnetization of the material drops considerably. Application to imaging by nuclear magnetic resonance.

摘要翻译： PCT No.PCT / FR87 / 00391 Sec。 371日期：1989年4月14日 102（e）日期1989年4月14日PCT提交1987年10月13日PCT公布。 出版物WO88 / 02922 日期：1988年4月21日。通过使用包含预定比例的永久磁化磁性材料和非磁性材料的混合磁性材料来避免任何磁性块中的磁化效应。 该比例作为材料的去磁激励与所谓的截止激励之间的比率进行调节，材料的磁化明显下降。 通过核磁共振成像应用。

公开(公告)号：US4820982A

公开(公告)日：1989-04-11

申请号：US31617

申请日：1987-03-30

申请人： Guy Aubert

发明人： Guy Aubert

IPC分类号： G01R33/24 ,  G01R33/28 ,  G12B9/08 ,  G01R33/20

CPC分类号： G01R33/28 ,  G01R33/24 ,  G12B9/08

摘要： A device is provided for exploring the inner volume of a cylinder, including a probe holder driven with a translational movement by a shaft and with a pivoting movement by a mandrel along and about the axis of the cylinder. By placing probes in housings previously formed in the probe holder, all the points inside the cylinder may be reached. The operations are carried out from inside the cylinder. The device further includes apparatus for fixing and adjusting the position of a framework holding the shaft. Associated devices allow predetermined positions to be reached not only along the axis but also in angular orientation.

摘要翻译： 提供了一种用于探索气缸的内部容积的装置，包括通过轴的平移运动驱动的探针保持架以及通过心轴沿着和围绕气缸的轴线的枢转运动。 通过将探头放置在先前形成在探针支架上的壳体中，可以到达气缸内的所有点。 操作从气缸内进行。 该装置还包括用于固定和调节保持轴的框架的位置的装置。 相关设备不仅可以沿轴线而且在角度方向上也可以达到预定位置。