公开(公告)号：US20090189721A1

公开(公告)日：2009-07-30

申请号：US12358612

申请日：2009-01-23

Applicant: Tomoo CHIBA ,  Hiroyuki Watanabe ,  Hirotaka Takeshima ,  Shigeki Tounosu ,  Mitsushi Abe ,  Hiroyuki Takeuchi

Inventor： Tomoo CHIBA ,  Hiroyuki Watanabe ,  Hirotaka Takeshima ,  Shigeki Tounosu ,  Mitsushi Abe ,  Hiroyuki Takeuchi

IPC: H01F6/00

CPC classification number: H01F6/04 ,  G01R33/3804 ,  G01R33/3806 ,  G01R33/3815

Abstract: In a superconducting magnet, including a vacuum vessel, a coil vessel inside the vacuum vessel, and a superconducting coil inside the coil vessel for generating a magnetic field, has a magnetic member, disposed inside the vacuum vessel, supported with thermal insulation, for compensating the magnetic field; a heat exchange device disposed outside the vacuum vessel for supplying to or absorbing heat from the vacuum vessel; and thermal conducting members thermally connecting the heat exchange device via the vacuum vessel to the magnetic member. An MRI including the superconducting magnet is also disclosed.

Abstract translation: 在包括真空容器的真空容器的超导磁体中，真空容器内部的线圈容器和用于产生磁场的线圈容器内的超导线圈具有设置在真空容器内的热绝缘支撑的磁性构件，用于补偿 磁场; 设置在所述真空容器外部的用于从所述真空容器供给或吸收热量的热交换装置; 以及导热构件，其通过所述真空容器将所述热交换装置热连接到所述磁性构件。 还公开了包括超导磁体的MRI。

公开(公告)号：US20090066332A1

公开(公告)日：2009-03-12

申请号：US12296719

申请日：2007-04-10

Applicant: Takeshi Yatsuo ,  Hiroyuki Takeuchi ,  Akira Kurome

Inventor： Takeshi Yatsuo ,  Hiroyuki Takeuchi ,  Akira Kurome

IPC: G01R33/385

CPC classification number: G01R33/385 ,  G01R33/3856 ,  G01R33/3858 ,  G01R33/4215 ,  G01R33/422

Abstract: An MRI apparatus excellent in magnetic field generation efficiency is provided. According to this invention, a main coil (52) of a gradient magnetic field coil (13) is partially recessed to reduce the total thickness of a radio-frequency coil (11) and a gradient magnetic field coil (13). That is, the main coil (52) is designed in a tubular shape, and the diameter r1 at the center portion of the imaging space is larger than the diameter r2 of the main coil end portion. Accordingly, the RF coil (11) can be disposed to be near to the gradient magnetic field coil (13) side without lowering the magnetic field generation efficiency.

Abstract translation: 提供了磁场产生效率优异的MRI装置。 根据本发明，梯度磁场线圈（13）的主线圈（52）部分地凹入，以减小射频线圈（11）和梯度磁场线圈（13）的总厚度。 也就是说，主线圈（52）被设计成管状，并且成像空间的中心部分处的直径r1大于主线圈端部的直径r2。 因此，RF线圈（11）可以靠近梯度磁场线圈（13）而不降低磁场产生效率。

公开(公告)号：US07498809B2

公开(公告)日：2009-03-03

申请号：US10540952

申请日：2003-12-24

Applicant: Tetsuhiko Takahashi ,  Hiroyuki Takeuchi ,  Masahiro Takizawa

Inventor： Tetsuhiko Takahashi ,  Hiroyuki Takeuchi ,  Masahiro Takizawa

IPC: G01V3/00

CPC classification number: G01R33/483 ,  G01R33/4833

Abstract: An MRI apparatus suitable for realizing selective excitation utilizing multiple RF transmitting coils (parallel transmission) is provided. This MRI apparatus is provided with, as an RF receiving coil or RF transmitting coil, an RF transmitting coil 104 comprising a loop coil 210, primary differential coil 220 and secondary differential coil 230 having a common central axis 201. Upon imaging, the coils 210, 220 and 230 constituting the RF transmitting coil 104 are simultaneously driven by RF signals with the same phase, and only the differential coils 220 and 230 are driven in the second half of irradiation time with phases different by 180° from the phases for the first half. Alternatively, two times of measurements are performed as a pair, in which, in the first measurement, the coils 210, 220 and 230 are simultaneously driven with RF signals of the same phase, then in the second measurement, only the differential coils 220 and 230 are driven with phases inverse to the phases for the first measurement, and the signals measured respectively are added. Such imaging or addition of the results of two times of the measurement provides a profile for exciting a local region. This enables selective excitation of only a desired region without using any RF pulse for signal suppression.

Abstract translation: 提供了适用于利用多个RF发射线圈（并行传输）实现选择性激励的MRI装置。 该MRI装置设置有作为RF接收线圈或RF发射线圈的RF发射线圈104，RF发射线圈104包括环路线圈210，初级差分线圈220和具有公共中心轴线201的次级差分线圈230.成像后，线圈210 构成RF发送线圈104的220,230同时由具有相同相位的RF信号驱动，并且仅在差分线圈220和230被驱动的照射时间的后半部分中，与第一相位相位相差180° 半。 或者，作为一对执行两次测量，其中在第一测量中，线圈210,220和230同时由相同相位的RF信号驱动，然后在第二测量中，仅差分线圈220和 230以与第一次测量的相位相反的相位驱动，并且分别测量所分别的信号。 这种成像或两次测量的结果的添加提供了用于激发局部区域的简档。 这使得仅选择性地激发期望的区域，而不使用任何用于信号抑制的RF脉冲。

公开(公告)号：US07418286B2

公开(公告)日：2008-08-26

申请号：US10492640

申请日：2002-10-15

Applicant: Hideki Kumai ,  Hiroyuki Takeuchi

Inventor： Hideki Kumai ,  Hiroyuki Takeuchi

IPC: A61B5/05

CPC classification number: G01R33/565 ,  G01R33/56518 ,  G01R33/56563 ,  G01R33/56572

Abstract: In a magnetic resonance imaging apparatus, in order to suppress generation of artifacts when a linear or non-linear phase error is generated during sampling of the echo signals, a first sequence for acquiring a plurality of echo signals by radiating a radio-frequency magnetic field pulse to an object to be examined, performing phase encoding, while alternating the polarity of a readout gradient magnetic field, and a second sequence for acquiring a plurality of echo signals by repeatedly applying the readout gradient magnetic field while reversing its polarity to that in the first sequence at the same phase encoding direction are performed. Signal processing means performs complex addition of the echo signals having the same phase encoding amount respectively obtained in the first sequence and the second sequence, and reconstructs an image.

Abstract translation: 在磁共振成像装置中，为了在回波信号采样期间产生线性或非线性相位误差时抑制伪像的产生，用于通过辐射射频磁场来获取多个回波信号的第一序列 脉冲到要检查的对象，执行相位编码，同时交替读出梯度磁场的极性，以及用于通过重复施加读出梯度磁场而获取多个回波信号的第二序列，同时将其极性反转到 执行相同编码方向的第一序列。 信号处理装置执行具有分别在第一序列和第二序列中获得的相同编码量的回波信号的复数相加，并且重建图像。

公开(公告)号：US20080068015A1

公开(公告)日：2008-03-20

申请号：US11975435

申请日：2007-10-18

Applicant: Shouichi Miyawaki ,  Hiroyuki Takeuchi ,  Yasumasa Saito

Inventor： Shouichi Miyawaki ,  Hiroyuki Takeuchi ,  Yasumasa Saito

IPC: G01V3/14

CPC classification number: G01R33/385 ,  G01R33/243 ,  G01R33/56572

Abstract: A magnetic resonance imaging method comprising a step for applying one or more gradient magnetic field pulses continuously, a step for calculating a residual magnetic field being generated from a magnet by an gradient magnetic field pulse based on a residual magnetic field response function representing the relation between the strength of the gradient magnetic field pulse being applied and the strength of a residual magnetic field being generated, and a step for correcting the residual magnetic field thus calculated. The magnetic resonance imaging method is further provided with a step for updating the residual magnetic field response function with time depending on the application history of the gradient magnetic field pulses being applied continuously.

Abstract translation: 一种磁共振成像方法，包括连续施加一个或多个梯度磁场脉冲的步骤，用于通过梯度磁场脉冲计算由磁体产生的残余磁场的步骤，所述梯度磁场脉冲基于残余磁场响应函数，所述残余磁场响应函数表示 所施加的梯度磁场脉冲的强度和产生剩余磁场的强度，以及用于校正由此计算出的残余磁场的步骤。 磁共振成像方法还具有根据连续施加的梯度磁场脉冲的应用历史随时间来更新残余磁场响应函数的步骤。

公开(公告)号：US20080026868A1

公开(公告)日：2008-01-31

申请号：US11808874

申请日：2007-06-13

Applicant: Hiroyuki Takeuchi

Inventor： Hiroyuki Takeuchi

IPC: A63B53/10

CPC classification number: A63B53/10 ,  A63B60/06 ,  A63B60/08 ,  A63B60/10 ,  A63B60/42 ,  A63B60/54 ,  A63B2060/002 ,  A63B2209/02 ,  A63B2209/023

Abstract: A golf club shaft (10), tubular and having a hollow portion, which includes a laminate of fiber reinforced prepregs (21 through 23, 24A, 25 through 29). The laminate has a first part (I) composed of a plurality of first prepregs (P1) and a second part (P2). A loss factor (tan δ) of the first part (I) is set to not less than 0.005 nor more than 0.02, when the loss factor is measured at a frequency of 10 Hz under a condition of 10° C. A loss factor (tan δ) of the second part (P2) is set to not less than 0.10 nor more than 0.50, when the loss factor is measured at a frequency of 10 Hz under the condition of 10° C.

Abstract translation: 一种管状并具有中空部分的高尔夫球杆杆（10），其包括纤维增强预浸料（21至23,24A，25至29）的叠层。 层压体具有由多个第一预浸料坯（P 1）和第二部分（P 2）构成的第一部分（I）。 当在10℃的条件下以10Hz的频率测量损耗因子时，第一部分（I）的损耗因子（tanδ）设定为不小于0.005且不大于0.02。损耗因子（ 当在10℃的条件下以10Hz的频率测量损耗因子时，将第二部分（P 2）的tanδ设定为不小于0.10且不大于0.50。

公开(公告)号：US20060192558A1

公开(公告)日：2006-08-31

申请号：US10564249

申请日：2004-06-08

Applicant: Shouichi Miyawaki ,  Hiroyuki Takeuchi ,  Yasumasa Saito

Inventor： Shouichi Miyawaki ,  Hiroyuki Takeuchi ,  Yasumasa Saito

IPC: G01V3/00

CPC classification number: G01R33/385 ,  G01R33/243 ,  G01R33/56572

Abstract: A magnetic resonance imaging method comprising a step for applying one or more gradient magnetic field pulses continuously, a step for calculating a residual magnetic field being generated from a magnet by an gradient magnetic field pulse based on a residual magnetic field response function representing the relation between the strength of the gradient magnetic field pulse being applied and the strength of a residual magnetic field being generated, and a step for correcting the residual magnetic field thus calculated. The magnetic resonance imaging method is further provided with a step for updating the residual magnetic field response function with time depending on the application history of the gradient magnetic field pulses being applied continuously.

Abstract translation: 一种磁共振成像方法，包括连续施加一个或多个梯度磁场脉冲的步骤，用于通过梯度磁场脉冲计算由磁体产生的残余磁场的步骤，所述梯度磁场脉冲基于残余磁场响应函数，所述残余磁场响应函数表示 所施加的梯度磁场脉冲的强度和产生剩余磁场的强度，以及用于校正由此计算出的残余磁场的步骤。 磁共振成像方法还具有根据连续施加的梯度磁场脉冲的应用历史随时间来更新残余磁场响应函数的步骤。

公开(公告)号：US20060091884A1

公开(公告)日：2006-05-04

申请号：US10540952

申请日：2003-12-24

Applicant: Tetsuhiko Takahashi ,  Hiroyuki Takeuchi ,  Masahiro Takizawa

Inventor： Tetsuhiko Takahashi ,  Hiroyuki Takeuchi ,  Masahiro Takizawa

IPC: G01V3/00

CPC classification number: G01R33/483 ,  G01R33/4833

Abstract: An MRI apparatus suitable for realizing selective excitation utilizing multiple RF transmitting coils (parallel transmission) is provided. This MRI apparatus is provided with, as an RF receiving coil or RF transmitting coil, an RF transmitting coil 104 comprising a loop coil 210, primary differential coil 220 and secondary differential coil 230 having a common central axis 201. Upon imaging, the coils 210, 220 and 230 constituting the RF transmitting coil 104 are simultaneously driven by RF signals with the same phase, and only the differential coils 220 and 230 are driven in the second half of irradiation time with phases different by 180° from the phases for the first half. Alternatively, two times of measurements are performed as a pair, in which, in the first measurement, the coils 210, 220 and 230 are simultaneously driven with RF signals of the same phase, then in the second measurement, only the differential coils 220 and 230 are driven with phases inverse to the phases for the first measurement, and the signals measured respectively are added. Such imaging or addition of the results of two times of the measurement provides a profile for exciting a local region. This enables selective excitation of only a desired region without using any RF pulse for signal suppression.

Abstract translation: 提供了适用于利用多个RF发射线圈（并行传输）实现选择性激励的MRI装置。 该MRI装置具有作为RF接收线圈或RF发射线圈的RF发射线圈104，RF发射线圈104包括具有公共中心轴线201的环形线圈210，初级差分线圈220和次级差分线圈230。 在成像时，构成RF发射线圈104的线圈210,220和230由相同相位的RF信号同时驱动，并且只有差分线圈220和230在相位不同于180°的照射时间的后半段被驱动 从上半年的阶段。 或者，作为一对执行两次测量，其中在第一测量中，线圈210,220和230同时由相同相位的RF信号驱动，然后在第二测量中，仅差分线圈220和 230以与第一次测量的相位相反的相位驱动，并且分别测量所分别的信号。 这种成像或两次测量的结果的添加提供了用于激发局部区域的简档。 这使得仅选择性地激发期望的区域，而不使用任何用于信号抑制的RF脉冲。

公开(公告)号：US07034537B2

公开(公告)日：2006-04-25

申请号：US10471539

申请日：2002-03-14

Applicant: Munetaka Tsuda ,  Hitoshi Yoshino ,  Hiroyuki Takeuchi ,  Shouichi Miyawaki

Inventor： Munetaka Tsuda ,  Hitoshi Yoshino ,  Hiroyuki Takeuchi ,  Shouichi Miyawaki

IPC: G01V3/00

CPC classification number: G01R33/3873 ,  G01R33/3815 ,  G01R33/389 ,  G01R33/56509

Abstract: An MRI apparatus having an open structure includes a static magnetic field generating magnet including magnetic field generating sources arranged above and below an imaging space and magnetic field fluctuation reducing plates arranged inside the magnet. Gradient magnetic field coils are fixed to the static magnetic field generating magnet so as to not be in contact with the magnetic field fluctuation reducing plates. When the strength of the magnetic field generated by the static magnetic field generating magnet fluctuates due to vibration of the gradient magnetic field coils or other devices during an imaging operation of the MRI apparatus, an eddy current is generated on the magnetic field fluctuation reducing plates in response to the magnetic field fluctuation components. Magnetic flux which cancels the static magnetic field fluctuation components is generated due to this eddy current, and consequently, a time-sequentially stable static magnetic field can be obtained.

Abstract translation: 具有开放结构的MRI装置包括：静磁场产生磁体，包括设置在成像空间上下的磁场发生源和布置在磁体内部的磁场波动减小板。 梯度磁场线圈被固定到静磁场产生磁体上，以便不与磁场波动减小板接触。 当MRI装置的成像操作期间由静磁场产生磁体产生的磁场的强度由于梯度磁场线圈或其他装置的振动而变动时，在磁场变动减小板上产生涡电流 响应磁场波动分量。 由于该涡电流而产生抵消静磁场波动分量的磁通，因此可以获得时间依次稳定的静磁场。

公开(公告)号：US06864397B2

公开(公告)日：2005-03-08

申请号：US10463616

申请日：2003-06-18

Applicant: Tomoyuki Kondo ,  Kouki Sagou ,  Shuichi Matsui ,  Hiroyuki Takeuchi ,  Yasuhiro Kubo ,  Etsuo Nakagawa

Inventor： Tomoyuki Kondo ,  Kouki Sagou ,  Shuichi Matsui ,  Hiroyuki Takeuchi ,  Yasuhiro Kubo ,  Etsuo Nakagawa

IPC: G02F1/13 ,  C07B61/00 ,  C07C41/20 ,  C07C43/225 ,  C07C253/30 ,  C07C255/54 ,  C07D239/26 ,  C07D239/34 ,  C07D309/06 ,  C07D319/06 ,  C07D335/02 ,  C07D339/08 ,  C09K19/12 ,  C09K19/14 ,  C09K19/20 ,  C09K19/30 ,  C09K19/34 ,  C09K19/42 ,  C07C41/06

CPC classification number: C09K19/3066 ,  C09K19/20 ,  C09K19/3402 ,  C09K19/3458 ,  C09K19/3469 ,  C09K19/3491 ,  C09K19/42 ,  C09K2019/0466 ,  C09K2019/3422 ,  Y10T428/10

Abstract: The present invention provides a process for producing a difluoromethyl ether derivative simple and efficient process for producing the difluoromethyl ether derivative represented by Formula (1d′) or a difluoromethyl ether derivative represented by Formula (1c′): wherein all the variables are defined in the specification.

Abstract translation: 本发明提供一种制备二氟甲基醚衍生物的方法，其简单而有效的制备由式（1d'）表示的二氟甲基醚衍生物或由式（1c'）表示的二氟甲基醚衍生物：其中所有变量定义在 规范。