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31. 发明授权

US06437672B1 Superconducting magnetic device 失效
标题翻译：超导磁性装置
公开(公告)号：US06437672B1
公开(公告)日：2002-08-20
申请号：US09101048
申请日：1998-06-29
申请人： Hirotaka Takeshima , Takao Hommei , Hajime Kawano , Hiroshi Tazaki , Takeshi Yatsuo , Shigenori Kuroda , Hajime Tanabe
发明人： Hirotaka Takeshima , Takao Hommei , Hajime Kawano , Hiroshi Tazaki , Takeshi Yatsuo , Shigenori Kuroda , Hajime Tanabe
IPC分类号： H01F600
CPC分类号： G01R33/3806 , G01R33/3815 , G01R33/383 , G01R33/3873
摘要： A superconducting magnet apparatus. By forming one or more holes in each of platelike ferromagnetic substances forming a magnetic shield for focusing the magnetic flux generated by superconducting coils, the flow of lines of magnetic flux is adjusted. Thereby, a static magnetic field in a measurement space is corrected. By disposing coupling tubes for supporting two cooling vessels housing superconducting coils on the rear side with respect to a central axis (Z axis) of the measurement space of the vertical direction, access to the subject is facilitated. In addition, the magnetic shield has an opening portion wider than the superconducting magnet on its side face. After the magnetic shield has been assembled, the superconducting magnet can be inserted from the opening portion.
摘要翻译：超导磁体装置。通过在形成用于聚焦超导线圈产生的磁通的磁屏蔽的板状铁磁性物质的每一个中形成一个或多个孔，调节磁通线的流动。由此，校正测量空间中的静磁场。通过设置用于支撑相对于垂直方向的测量空间的中心轴线（Z轴）在后侧容纳超导线圈的两个冷却容器的联接管，便于对对象的访问。此外，磁屏蔽件的侧面具有比超导磁体宽的开口部。在组装磁屏蔽之后，可以从开口部分插入超导磁体。

32. 发明授权

US5252924A Magnetic field generating apparatus for MRI 失效
标题翻译：用于MRI的磁场产生装置
公开(公告)号：US5252924A
公开(公告)日：1993-10-12
申请号：US793466
申请日：1991-11-18
申请人： Hideya Sakurai , Junji Uzuki , Hirotaka Takeshima , Shigeru Sato
发明人： Hideya Sakurai , Junji Uzuki , Hirotaka Takeshima , Shigeru Sato
IPC分类号： G01R33/383 , H01F7/02 , G01V3/00
CPC分类号： H01F7/0278 , G01R33/383
摘要： A magnetic field generating apparatus for a magnetic resonance imaging (MRI) apparatus, including soft ferrite disposed adjacently to a gradient magnetic field coil which is disposed in a gap and serves to form a static magnetic field. The soft ferrite has saturated magnetic flux density (Rs) more than 0.4 T, coersive force (He) less than 50 A/m, and specific resistance .rho. more than 10.sup.-5 .OMEGA..multidot.cm. The magnetic field generating apparatus thus constructed has a magnetic circuit arrangement that a pair of permanent magnetic bodies which are disposed so as to confront each other and define the gap are magnetically connected through a yoke, and pole pieces are fixedly secured to the surfaces of the respective permanent magnetic bodies facing the gap, thereby generating the magnetic field in the gap.
摘要翻译：一种用于磁共振成像（MRI）装置的磁场产生装置，包括设置在间隙中并用于形成静磁场的梯度磁场线圈相邻的软铁氧体。软铁氧体的饱和磁通密度（Rs）大于0.4T，凝聚力（He）小于50A / m，电阻rho大于10-5OEGEGA×cm。这样构成的磁场产生装置具有：磁路装置，通过磁轭将配置成彼此面对并限定间隙的一对永久磁体固定地固定在各个永久磁体面对间隙，从而在间隙中产生磁场。

33. 发明申请

US20080061787A1 Magnetic Resonance Imaging Apparatus 失效
标题翻译：磁共振成像仪
公开(公告)号：US20080061787A1
公开(公告)日：2008-03-13
申请号：US11791878
申请日：2005-11-29
申请人： Hirotaka Takeshima
发明人： Hirotaka Takeshima
IPC分类号： G01R33/32 , A61B5/055
CPC分类号： A61B5/055 , G01R33/3806 , G01R33/381 , G01R33/3815 , G01R33/385 , G01R33/4215 , G01R33/422
摘要： A magnetic resonance imaging apparatus including: static magnetic field generation means arranged around an imaging space where an examinee is to be located and generating a static magnetic field in the imaging space; gradient magnetic field generation means arranged in the imaging space side of the static magnetic field generation means and generating a gradient magnetic field in the imaging space; and high-frequency magnetic field generation means arranged at the imaging space side of the gradient magnetic field generation means and generating a high-frequency magnetic field in the imaging space. The gradient magnetic field generation means has a concave in the vicinity of the imaging space depressed toward the static magnetic field generation means. At least a part of the high-frequency magnetic field generation means is contained in the concave.
摘要翻译：一种磁共振成像装置，包括：静电磁场产生装置，被布置在被摄体所在的成像空间周围，并在所述成像空间中产生静磁场; 设置在静磁场产生装置的成像空间侧的梯度磁场产生装置，并在成像空间中产生梯度磁场; 以及高频磁场产生装置，其布置在所述倾斜磁场产生装置的成像空间侧并在所述成像空间中产生高频磁场。倾斜磁场产生装置在朝向静磁场产生装置压下的成像空间附近具有凹陷。高频磁场产生装置的至少一部分被包含在凹面中。

34. 发明授权

US07167740B2 Measuring method in magnetic resonance imaging device and magnetic resonance imaging device 有权
标题翻译：磁共振成像装置和磁共振成像装置中的测量方法
公开(公告)号：US07167740B2
公开(公告)日：2007-01-23
申请号：US10433736
申请日：2001-12-03
申请人： Takayuki Abe , Shigeru Watanabe , Hirotaka Takeshima
发明人： Takayuki Abe , Shigeru Watanabe , Hirotaka Takeshima
IPC分类号： A61B5/05
CPC分类号： G01R33/4833 , A61B5/055 , A61B5/7257 , G01R33/563
摘要： In a measuring space of the object (1), an essential measurement region (41, 61, 71, 81, 111, 131) having a center region of the measuring space and a plurality of peripheral measurement regions (42, 62, 63, 72, 82, 112, 132) which do not have any region overlapped with the essential measurement region are set. Then, the essential measurement region is combined with a selected peripheral portion of the plurality of the peripheral measurement regions to measure in a preceding manner a nuclear magnetic resonance signal from the object as data of the measuring space. The essential measurement region is combined with the peripheral measurement region of the plurality of the peripheral measurement regions which has not been selected in the preceding measuring step to measure a nuclear magnetic resonance signal from the object as data of the measuring space. Sequentially, the essential measurement region is combined with the peripheral measurement region having not been measured in a preceding measuring step to measure a nuclear magnetic resonance signal from the object. The data of the essential measurement region and the data of the peripheral measurement region thus measured is supplemented with the data of the peripheral measurement region measured in the preceding measuring step to generate data of the measuring space.
摘要翻译：在物体（1）的测量空间中，具有测量空间的中心区域和多个周边测量区域（42,62,63，131）的测量区域（41,61,71,81,111,131）设置不具有与基本测量区域重叠的区域的72,82,112,132）。然后，将基本测量区域与多个外围测量区域的所选择的外围部分组合，以先前的方式测量来自物体的核磁共振信号作为测量空间的数据。基本测量区域与在前一测量步骤中未被选择的多个外围测量区域的外围测量区域结合，以测量来自物体的核磁共振信号作为测量空间的数据。接下来，将基本测量区域与在前一测量步骤中未被测量的外围测量区域组合以测量来自物体的核磁共振信号。基准测量区域的数据和如此测量的外围测量区域的数据被补充有在前一测量步骤中测量的外围测量区域的数据，以生成测量空间的数据。

35. 发明授权

US06933722B2 Magnetic resonance imaging device and gradient magnetic field coil used for it 失效
标题翻译：用于磁共振成像装置和梯度磁场线圈
公开(公告)号：US06933722B2
公开(公告)日：2005-08-23
申请号：US10332069
申请日：2001-07-02
申请人： Munetaka Tsuda , Hirotaka Takeshima , Takeshi Yatsuo
发明人： Munetaka Tsuda , Hirotaka Takeshima , Takeshi Yatsuo
IPC分类号： G01R33/38 , G01R33/385 , G01R33/421 , G01V3/00
CPC分类号： G01R33/385 , G01R33/3806 , G01R33/3854 , G01R33/3856 , G01R33/4215
摘要： To reduce vibration and noise generated in supplying pulsatile current to the gradient magnetic field coil for driving that coil in a MRI apparatus, an active shielded gradient magnetic field coil is used, in which the gradient magnetic field coil is supported by and fixed to the static magnetic field generating magnet. The supporter for supporting this gradient magnetic field coil in non-contact does not prevent the interventional procedure performed by a doctor. Further, an eddy current generated on the surface of the static magnetic field generating magnet near the periphery of the gradient magnetic field coil, when supplying the pulsatile current to the gradient magnetic field coil, can be reduced.
摘要翻译：为了减少向在MRI装置中驱动线圈的梯度磁场线圈供给脉动电流产生的振动和噪声，使用有源屏蔽梯度磁场线圈，其中梯度磁场线圈被支撑并固定在静态磁场产生磁铁。用于支持非接触式梯度磁场线圈的支架不能阻止医生进行的介入手术。此外，当向梯度磁场线圈供应脉动电流时，在梯度磁场线圈周围附近的静磁场产生磁体的表面上产生的涡流可以减小。

36. 发明授权

US06816051B2 Superconducting magnet and magnetic resonance imaging apparatus using the same 失效
标题翻译：超导磁体和使用其的磁共振成像装置
公开(公告)号：US06816051B2
公开(公告)日：2004-11-09
申请号：US10633508
申请日：2003-08-05
申请人： Hiroyuki Watanabe , Tsutomu Yamamoto , Yoshihide Wadayama , Hirotaka Takeshima , Kenji Sakakibara , Takao Honmei
发明人： Hiroyuki Watanabe , Tsutomu Yamamoto , Yoshihide Wadayama , Hirotaka Takeshima , Kenji Sakakibara , Takao Honmei
IPC分类号： G01V300
CPC分类号： H01F6/04 , F17C13/087 , F17C2203/0687 , F17C2221/017 , F17C2223/0161 , G01R33/3806 , G01R33/3815 , G01R33/3854
摘要： Effect of vibration of a refrigerator on a superconducting coil is reduced to reduce disturbance in an image. A coolant tank for supplying a coolant to coil containers is provided separately from the coil containers, and the refrigerator is placed in the coolant tank, and a coolant circulation passage connects between the coolant tank and the coil containers.
摘要翻译：冷却器对超导线圈的振动的影响减小，以减少图像中的干扰。用于向线圈容器供应冷却剂的冷却剂罐与线圈容器分开设置，并且将冰箱放置在冷却剂箱中，并且将冷却剂循环通道连接在冷却剂箱和线圈容器之间。

37. 发明授权

US06664876B2 Superconducting magnet and magnetic resonance imaging apparatus using the same 失效
标题翻译：超导磁体和使用其的磁共振成像装置
公开(公告)号：US06664876B2
公开(公告)日：2003-12-16
申请号：US10170392
申请日：2002-06-14
申请人： Hiroyuki Watanabe , Tsutomu Yamamoto , Yoshihide Wadayama , Hirotaka Takeshima , Kenji Sakakibara , Takao Honmei
发明人： Hiroyuki Watanabe , Tsutomu Yamamoto , Yoshihide Wadayama , Hirotaka Takeshima , Kenji Sakakibara , Takao Honmei
IPC分类号： H01F500
CPC分类号： H01F6/04 , G01R33/3806 , G01R33/3815 , G01R33/3854
摘要： Effect of vibration of a refrigerator on a superconducting coil is reduced to reduce disturbance in an image. A coolant tank for supplying a coolant to coil containers is provided separately from the coil containers, and the refrigerator is placed in the coolant tank, and a coolant circulation passage connects between the coolant tank and the coil containers.
摘要翻译：冷却器对超导线圈的振动的影响减小，以减少图像中的干扰。用于向线圈容器供应冷却剂的冷却剂罐与线圈容器分开设置，并且将冰箱放置在冷却剂箱中，并且将冷却剂循环通道连接在冷却剂箱和线圈容器之间。

38. 发明授权

US6154110A Gradient magnetic field coil and magnetic resonance imaging apparatus using the same 失效
标题翻译：梯度磁场线圈和使用其的磁共振成像装置
公开(公告)号：US6154110A
公开(公告)日：2000-11-28
申请号：US815843
申请日：1997-03-12
申请人： Hirotaka Takeshima
发明人： Hirotaka Takeshima
IPC分类号： A61B5/055 , G01R33/385 , G01R33/421 , H01F5/00
CPC分类号： G01R33/385 , G01R33/3856 , G01R33/4215
摘要： A gradient magnetic field coil for use in a magnetic resonance imaging apparatus having a magnet for generating a homogeneous magnetic field area by a magnetic field from a magnetic field generation source accommodated in a cooling container and generating a static magnetic field in a predetermined direction includes a substantially flat coil group so extending as to orthogonally cross the direction of the magnetic field of the homogeneous magnetic field area, and the coil group includes a main coil for primarily generating a gradient magnetic field in the homogeneous magnetic field and a shield coil disposed between the main coil and the cooling container, for generating a magnetic field which substantially cancels the magnetic field generated at outside portions of the main coil close to the cooling container to zero. A gradient magnetic coil for use in a magnetic resonance imaging apparatus has a coil group including a main coil for primarily generating a gradient magnetic field and a shield coil disposed between the main coil and the cooling container, two sets of the cooling containers are so disposed as to oppose each other in the direction of the homogeneous magnetic field, and the coil group is provided to each of the two sets of cooling containers.
摘要翻译：一种用于磁共振成像装置的梯度磁场线圈，其具有用于通过容纳在冷却容器中的磁场产生源的磁场产生均匀的磁场面积并沿预定方向产生静磁场的磁体，其包括：基本上平坦的线圈组正交地横穿均匀磁场区域的磁场的方向延伸，线圈组包括用于在均匀磁场中主要产生梯度磁场的主线圈和设置在均匀磁场区域之间的屏蔽线圈主线圈和冷却容器，用于产生基本上抵消靠近冷却容器的主线圈外部产生的磁场的磁场为零。用于磁共振成像装置的梯度磁线圈具有包括主要产生梯度磁场的主线圈和设置在主线圈和冷却容器之间的屏蔽线圈的线圈组，设置两组冷却容器在均匀磁场的方向上彼此相对，并且将线圈组设置在两组冷却容器中的每一个上。

39. 发明授权

US6037850A Superconducting magnet apparatus and method of regulating magnetization thereof 失效
标题翻译：超导磁体装置及其磁化强度的调节方法
公开(公告)号：US6037850A
公开(公告)日：2000-03-14
申请号：US952722
申请日：1998-01-16
申请人： Takao Honmei , Hirotaka Takeshima , Hajime Kawano , Yutaka Takuma , Munenori Kotabe , Naoki Maki , Nobuhiro Hara , Shigeru Kakugawa , Noriaki Hino
发明人： Takao Honmei , Hirotaka Takeshima , Hajime Kawano , Yutaka Takuma , Munenori Kotabe , Naoki Maki , Nobuhiro Hara , Shigeru Kakugawa , Noriaki Hino
IPC分类号： H01F13/00 , G01R33/3815 , H01F6/00 , H01F1/00
CPC分类号： H01F6/00 , G01R33/3815
摘要： A small-sized high-precision superconducting magnet apparatus which can prevent an occurrence of the principal factor in generating a quench and can restrain the magnetic flux from varying with time, and a method of regulating the magnetization of such a superconducting magnet apparatus, by which the superconducting magnet apparatus can be uniformly magnetized. Superconducting magnet apparatus of the present invention has: a cooling container; a holding medium for holding a persistent current therein, which is placed in said cooling container and is operative to generate a magnetic flux in a uniform magnetic field region (FOV); static-magnetic-field generating means composed of a plurality of cylinders using superconducting composite plate materials; a cylinder supporting base for holding the plurality of cylinders; and temperature regulating devices (not shown in FIG. 67) embedded in the cylinders, respectively. Magnetization of the static-magnetic-field generating means is performed by induction-magnetizing. Further, the regulation of a magnetization value of the static-magnetic-field generating means is regulated by controlling the temperature of the cylinders by means of the temperature regulating devices.
摘要翻译： PCT No.PCT / JP97 / 00951 Sec。 371日期1998年1月16日 102（e）日期1998年1月16日PCT 1997年3月21日PCT公布。出版物WO97 / 35328 日期1997年9月25日一种小型高精度超导磁体装置，其能够防止产生淬火的主要因素的发生并且可以抑制磁通量随时间变化，以及调节这种超导体的磁化的方法磁铁装置可以使超导磁体装置均匀地磁化。本发明的超导磁体装置具有：冷却容器; 用于保持持久电流的保持介质，其被放置在所述冷却容器中并且可操作以在均匀的磁场区域（FOV）中产生磁通量; 使用超导复合板材料的多个气缸构成的静磁场产生装置; 用于保持多个气缸的气缸支撑基座; 和分别嵌入在气缸中的温度调节装置（图67中未示出）。通过感应磁化来进行静磁场产生装置的磁化。此外，通过温度调节装置控制气缸的温度来调节静磁场产生装置的磁化值的调节。

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