公开(公告)号：US5721490A

公开(公告)日：1998-02-24

申请号：US597959

申请日：1996-02-07

Applicant: Hiroshi Takano ,  Hiroyuki Takeuchi ,  Keiichi Chabata ,  Takuya Domoto ,  Takanobu Hatakeyama

Inventor： Hiroshi Takano ,  Hiroyuki Takeuchi ,  Keiichi Chabata ,  Takuya Domoto ,  Takanobu Hatakeyama

IPC: G01R33/385 ,  G01V3/00

CPC classification number: G01R33/3852

Abstract: A power source apparatus distributes a current command value to be supplied to a load to a plurality of output current amplifiers connected in parallel with the load, and each of the output current amplifiers supplies an output current corresponding to the current command value so distributed. This power source apparatus prevents a circulating current between the output current amplifiers by controlling each output current amplifier so that the difference between the output current from each output current amplifier and the distributed current command value becomes zero, or by inserting current limiting devices into the output line of each output current amplifier.

Abstract translation: 电源装置将要提供给负载的电流指令值分配给与负载并联连接的多个输出电流放大器，并且每个输出电流放大器提供与分配的当前指令值相对应的输出电流。 该电源装置通过控制每个输出电流放大器来防止输出电流放大器之间的循环电流，使得来自每个输出电流放大器的输出电流与分布电流指令值之间的差变为零，或者通过将限流装置插入输出 每路输出电流放大器。

公开(公告)号：US5655532A

公开(公告)日：1997-08-12

申请号：US448111

申请日：1995-05-22

Applicant: Yukihiro Yasugi ,  Koji Kajiyama ,  Hiroyuki Takeuchi

Inventor： Yukihiro Yasugi ,  Koji Kajiyama ,  Hiroyuki Takeuchi

IPC: A61B5/055 ,  G01R33/48 ,  G01R33/54 ,  G01R33/56 ,  G01R33/561

CPC classification number: G01R33/5602 ,  G01R33/482 ,  G01R33/56

Abstract: A magnetic resonance imaging method includes the steps of setting a repetition time in accordance with an intensity of an encoding gradient magnetic field, applying a gradient magnetic field for a slice, the set encoding gradient magnetic field, a readout gradient magnetic field, and RF pulses to a subject in a predetermined sequence of the set repetition time, measuring nuclear magnetic resonance (NMR) signals inside the subject in a full encode range with a first repetition time, continuously measuring, at least one time, NMR signals in a first range containing a zero encoding quantity and sandwiched between two predetermined intensities of the encoding gradient magnetic field with a repetition time which is different from the first repetition time, and reconstructing an image by combining the measured NMR signals with one another.

Abstract translation: 磁共振成像方法包括以下步骤：根据编码梯度磁场的强度设置重复时间，对切片施加梯度磁场，设定编码梯度磁场，读出梯度磁场和RF脉冲 以设定的重复时间的预定顺序对对象进行测量，在第一重复时间的全编码范围内测量受试者内部的核磁共振（NMR）信号，连续测量至少一次在包含第一范围的第一范围内的NMR信号 零编码量并且夹在具有不同于第一重复时间的重复时间的编码梯度磁场的两个预定强度之间，并且通过将测量的NMR信号彼此组合来重构图像。

公开(公告)号：US5386190A

公开(公告)日：1995-01-31

申请号：US209486

申请日：1994-03-14

Applicant: Hiroyuki Takeuchi ,  Katsunori Suzuki

Inventor： Hiroyuki Takeuchi ,  Katsunori Suzuki

IPC: A61B5/055 ,  G01R33/32 ,  G01R33/48 ,  G01R33/54 ,  G01R33/565 ,  G01R33/20

CPC classification number: G01R33/482 ,  G01R33/446 ,  G01R33/56563

Abstract: A slice selective excitation method of nuclear spins in an MRI apparatus comprising applying a first gradient magnetic field (B+G.sub.s1) to a patient in a predetermined direction, exciting nuclear spins in a first slice selection region of the patient by a first radio frequency pulse, applying then a second gradient magnetic field (B+G.sub.s2) different from the first gradient magnetic field (B+G.sub.s1) in the predetermined direction, exciting a second slice selection region overlapping at least partially with the first slice selection region by irradiating thereto a second radio frequency pulse so as to excite once again the nuclear spin excited by the first radio frequency pulse, and generating NMR signals effective for image reconstruction from only the overlapping portion of the slice selection regions.

Abstract translation: 一种在MRI装置中的核自旋的切片选择性激发方法，包括以预定方向向患者施加第一梯度磁场（B + Gs1），通过第一射频脉冲激励患者的第一切片选择区域中的核自旋 ，在预定方向施加与第一梯度磁场（B + Gs1）不同的第二梯度磁场（B + Gs2），激励与第一切片选择区域至少部分重叠的第二切片选择区域， 第二射频脉冲，以再次激发由第一射频脉冲激发的核自旋，并且仅从切片选择区域的重叠部分产生对图像重建有效的NMR信号。

公开(公告)号：US5359311A

公开(公告)日：1994-10-25

申请号：US909595

申请日：1992-07-07

Applicant: Toshio Kawabata ,  Hiroyuki Takeuchi ,  Hisashi Katsurada ,  Kazutaka Nakamura ,  Tomoaki Ushiro

Inventor： Toshio Kawabata ,  Hiroyuki Takeuchi ,  Hisashi Katsurada ,  Kazutaka Nakamura ,  Tomoaki Ushiro

IPC: H01F1/34 ,  H01F17/00 ,  H01F17/04 ,  H01F27/23 ,  H01F41/04 ,  H01F15/02 ,  H01F27/26

CPC classification number: H01F17/04 ,  H01F2017/048 ,  Y10T29/4902 ,  Y10T29/49076

Abstract: In a solid inductor having an inner conductor formed by passing through a magnetic material, a vitreous diffused material is applied to the surface of the magnetic material, and the diffused material is diffused into the magnetic material by heat treatment, to form a diffusion layer exhibiting low permeability. The thickness of this diffusion layer is adjusted, thereby to make it possible to adjust the inductance value of the solid inductor as well as to improve resistance to humidity of the solid inductor.

Abstract translation: 在具有通过磁性材料形成的内部导体的固体电感器中，将玻璃质扩散材料施加到磁性材料的表面，并且扩散材料通过热处理扩散到磁性材料中，以形成展现 低渗透性。 调整该扩散层的厚度，从而能够调整固体电感器的电感值以及提高固体电感器的耐湿性。

公开(公告)号：US5334966A

公开(公告)日：1994-08-02

申请号：US984333

申请日：1992-12-02

Applicant: Hirotaka Takeshima ,  Hiroyuki Takeuchi

Inventor： Hirotaka Takeshima ,  Hiroyuki Takeuchi

IPC: A61B5/055 ,  G01R33/383 ,  H01F7/02

CPC classification number: G01R33/383

Abstract: A magnetostatic field generator for a magnetic resonance imaging apparatus includes a pair of permanent magnets each having a rectangular parallelepiped shape arranged perpendicular to a direction of a uniform magnetic field to surround a space where a uniform magnetic field is generated, a plurality of first permanent magnets each having a trigonal prism shape arranged on both sides of an area between the permanent magnets each having a rectangular parallelepiped shape, a plurality of second permanent magnets each having a trigonal prism shape which are arranged between the permanent magnets each having a rectangular parallelepiped shape and the first permanent magnets and satisfy magnetic field boundary conditions between the permanent magnets each having a rectangular parallelepiped shape and the first permanent magnets, and a yoke for holding the pair of permanent magnets each having a rectangular parallelepiped shape, the plurality of first permanent magnets, and the plurality of second permanent magnets and for forming a magnetic path.

Abstract translation: 一种用于磁共振成像装置的静磁场发生器，包括一对永久磁铁，每个永磁体具有垂直于均匀磁场的方向布置的长方体形状，以围绕产生均匀磁场的空间;多个第一永磁体 每个具有三角棱镜形状，其布置在每个具有长方体形状的永磁体之间的区域的两侧上;多个第二永磁体，每个具有三角形形状，每个具有三角形形状，每个具有长方体形状的永磁体和 所述第一永久磁铁满足各自具有长方体形状的永久磁铁和所述第一永久磁铁之间的磁场边界条件，以及用于保持所述一对永久磁铁的磁轭，所述磁轭各自具有长方体形状，所述多个第一永久磁铁， 和多个 第二永磁体和用于形成磁路。

公开(公告)号：US5327898A

公开(公告)日：1994-07-12

申请号：US908176

申请日：1992-07-02

Applicant: Hitoshi Yoshino ,  Hiroyuki Takeuchi

Inventor： Hitoshi Yoshino ,  Hiroyuki Takeuchi

IPC: G01R33/341 ,  A61B5/055 ,  G01R33/20

CPC classification number: G01R33/3678

Abstract: A signal receiving coil device for an MRI apparatus, to be fitted to a patient for detecting nuclear magnetic resonance signals, comprising a coil member assuming a substantially cylindrical shape when fitted to the patient and having at least one flexible section and at least one rigid section disposed sequentially and alternately in a circumferential direction of said cylindrical shape; a first coil unit disposed on the coil holding member, and having a signal receiving direction thereof crossing substantially orthogonally the direction of a static magnetic field generated by the MRI apparatus when the coil holding member is fitted to the patient; and a second coil system disposed on the coil holding member, and having a signal receiving direction of reception thereof crossing substantially orthogonally both of the direction of the static magnetic field and the signal receiving direction of the first coil unit when the coil holding member is fitted to the patient.

Abstract translation: 一种用于MRI装置的用于检测核磁共振信号的用于MRI装置的信号接收线圈装置，包括当装配到患者时呈现基本上圆柱形的线圈构件，并且具有至少一个柔性部分和至少一个刚性部分 沿所述圆柱形的圆周方向顺序地和交替地设置; 第一线圈单元，其设置在所述线圈保持构件上，并且当所述线圈保持构件安装到所述患者时，具有与所述MRI装置产生的静磁场的方向基本正交的信号接收方向; 以及第二线圈系统，其设置在所述线圈保持构件上，并且当所述线圈保持构件配合时，具有接收方向的信号接收方向与所述静磁场的方向和所述第一线圈单元的信号接收方向基本正交地交叉 给病人

公开(公告)号：US5293519A

公开(公告)日：1994-03-08

申请号：US669960

申请日：1991-03-15

Applicant: Hitoshi Yoshino ,  Hiroyuki Takeuchi

Inventor： Hitoshi Yoshino ,  Hiroyuki Takeuchi

IPC: G01R33/34 ,  G01R33/341 ,  G01R33/20

CPC classification number: G01R33/3678 ,  G01R33/34053 ,  G01R33/34069 ,  G01R33/365

Abstract: RF coils for a nuclear magnetic resonance device having following features separated or combined at an intersecting portion of two conductive loops disposed so that sensitive directions thereof are substantially perpendicular to a direction of a static magnetic field and that the conductive loops intersect each other with a predetermined interval; (1) conductors of conductive loops are narrowed; (2) neighborhood of intersecting portion is grounded; and (3) a member having a small dielectric constant is put inside of an intersecting portion.

Abstract translation: 用于核磁共振装置的RF线圈，其具有在两个导电回路的交叉部分处分离或组合的以下特征，使得其敏感方向基本上垂直于静态磁场的方向，并且导电环路以预定的方向彼此相交 间隔; （1）导电环的导体变窄; （2）相交部分邻接接地; 和（3）具有小介电常数的部件放置在相交部分的内部。

公开(公告)号：US5107949A

公开(公告)日：1992-04-28

申请号：US391295

申请日：1989-08-08

Applicant: Teishiroh Gotoh ,  Ikuo Hara ,  Makoto Kitagawa ,  Hiroyuki Takeuchi ,  Tomoyuki Adachi

Inventor： Teishiroh Gotoh ,  Ikuo Hara ,  Makoto Kitagawa ,  Hiroyuki Takeuchi ,  Tomoyuki Adachi

IPC: B62K11/00 ,  B62J23/00 ,  B62K19/46 ,  F02B61/02

CPC classification number: B62K19/46 ,  F02B61/02

Abstract: A motorcycle of the type having a luggage box in the form of oppositely spaced side cases is organized to reduce the size and weight of the component parts of the vehicle by, according to one aspect of the invention, locating the pivot shaft for the luggage box cover, which attaches the vehicle rear seat, at the front end of the luggage box to reduce the stiffness of the frame parts required to support the cover. Also, the side walls of the side cases are adjustably secured to the vehicle and so configured as to permit selective enlargement of the cases without an attendant increase in aerodynamic drag. The vehicle, further, employs particularly formed side bumpers that are arranged to prevent damage to the laterally extensive side cases of the luggage box in the event of contact between the vehicle and the road surface that would otherwise damage the cowling. Furthermore, the luggage box components are desirably designed to be mounted on a frame structure separate from the vehicle frame but detachably secured thereto in order to facilitate construction and assembly of the vehicle.

Abstract translation: 通过根据本发明的一个方面，组织具有相对间隔的侧壳形式的行李箱的类型的摩托车，以减小车辆的部件的尺寸和重量，定位用于行李箱的枢轴 将车辆后排座椅安装在行李箱的前端，以减小支撑罩所需的框架部件的刚度。 此外，侧壳的侧壁可调节地固定到车辆，并且被配置为允许选择性地扩大壳体而不伴随地增加空气动力学阻力。 此外，车辆采用特别形成的侧部保险杠，其被布置成在车辆和路面之间的接触的情况下防止损坏行李箱的横向广泛的侧壳，否则将损坏整流罩。 此外，行李箱部件理想地设计成安装在与车辆框架分离的框架结构上，但是可拆卸地固定在框架结构上，以便于车辆的构造和组装。

公开(公告)号：US5032815A

公开(公告)日：1991-07-16

申请号：US456748

申请日：1989-12-26

Applicant: Takashi Kobayashi ,  Minoru Tamada ,  Yoshifumi Yamanaka ,  Hiroyuki Takeuchi

Inventor： Takashi Kobayashi ,  Minoru Tamada ,  Yoshifumi Yamanaka ,  Hiroyuki Takeuchi

IPC: H01F17/00 ,  H01F41/04

CPC classification number: H01F17/0013

Abstract: A lamination type inductor has a plurality of ferrite sheets assembled one above the other and laminated together, the uppermost and lowermost sheets being end sheets having lead-out conductor patterns thereon and conductor patterns on the surfaces of the end sheets which face each other which are connected to the lead-out conductor patterns and which are for connection to conductor patterns on intermediate sheets, and a plurality of intermediate ferrite sheets, each having a conductor pattern on one surface thereof which corresponds to a 0.25 turn of an inductor coil and a conductor pattern on the other surface which corresponds to a 0.5 turn of an inductor coil, each ferrite sheet having an opening therethrough through which the conductor patterns of the 0.25 and 0.5 turn are electrically connected to form a 0.75 turn of an inductor coil on each ferrite sheet. The conductor patterns on the successive intermediate sheets are connected to each other for forming an inductor coil having a number of turns which is a multiple of 0.75, and the conductor patterns on the upper surface of the uppermost of the plurality of intermediate ferrite sheets and the lower surface of the lowermost of the intermediate ferrite sheets are electrically connected to the conductor patterns on the surfaces of the end sheets which face each other for forming with the lastmentioned conductor pattern a complete inductor coil.

Abstract translation: 层叠型电感器具有多个彼此组装并且层叠在一起的铁素体片，最上面和最下面的片是其上具有引出导体图案的端片，并且端片彼此面对的导体图案 连接到引出导体图案并且用于连接到中间片材上的导体图案，以及多个中间铁氧体片，每个中间铁氧体片的一个表面上的导体图案对应于电感线圈的0.25匝和导体 在另一个表面上对应于电感线圈的0.5匝的每个铁氧体片的每个铁氧体片具有开口，0.25和0.5匝的导体图案通过该开口电连接，以在每个铁氧体片上形成0.75匝的电感线圈 。 连续中间片上的导体图形彼此连接，形成匝数为0.75倍的电感线圈，多个中间铁氧体片的最上面的导体图案和 最下面的中间铁氧体片的下表面电连接到彼此相对的端片的表面上的导体图案，以形成具有完整电感线圈的最后导体图案。

公开(公告)号：US09274189B2

公开(公告)日：2016-03-01

申请号：US13512090

申请日：2010-11-29

Applicant: Yoshihisa Soutome ,  Hideta Habara ,  Yoshitaka Bito ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi ,  Hisaaki Ochi

Inventor： Yoshihisa Soutome ,  Hideta Habara ,  Yoshitaka Bito ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi ,  Hisaaki Ochi

IPC: G01R33/34 ,  G01R33/48 ,  G01R33/345 ,  G01R33/36

CPC classification number: G01R33/34046 ,  G01R33/34053 ,  G01R33/34076 ,  G01R33/3453 ,  G01R33/3657 ,  G01R33/3678

Abstract: There is provided a technique for securing a large examination space in a tunnel type MRI device without inviting increase of manufacturing cost and without significantly reducing irradiation efficiency or uniformity of the irradiation intensity distribution in an imaging region. Between rungs of a partially cylindrical RF coil, which coil corresponds to a cylindrical RF coil of which part is removed, there are disposed half-loops generating magnetic fields, which are synthesized with magnetic fields generated by loops constituted by adjacent rungs of the partially cylindrical RF coil and rings connecting the rungs to generate a circularly polarized or elliptically polarized magnetic field. Further, high-frequency signals of the same reference frequency having a desired amplitude ratio and phase difference are supplied to the partially cylindrical RF coils and half-loops.

Abstract translation: 提供了一种用于在隧道式MRI装置中确保大的检查空间的技术，而不会增加制造成本，并且不显着降低成像区域中的照射强度分布的照射效率或均匀性。 在部分圆柱形RF线圈的两个梯级之间，该线圈对应于部分被去除的圆柱形RF线圈，设置有产生磁场的半环，该磁场由具有由部分圆柱形的相邻梯级构成的环产生的磁场合成 RF线圈和环连接梯级以产生圆偏振或椭圆偏振磁场。 此外，具有期望幅度比和相位差的相同参考频率的高频信号被提供给部分圆柱形RF线圈和半环。