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1. 发明专利

JP2008012118A Magnetic resonance imaging system 有权
标题翻译：磁共振成像系统
公开(公告)号：JP2008012118A
公开(公告)日：2008-01-24
申请号：JP2006187329
申请日：2006-07-07
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： KUROME AKIRA , TAKESHIMA HIROTAKA , YAO TAKESHI , OBARA TAKAYUKI , HIGUCHI YOSHIYA
IPC分类号： A61B5/055 , G01R33/3873
摘要： PROBLEM TO BE SOLVED: To suppress a temperature variation of a shim tray by reducing the conduction quantity of heat caused the convection and radiation between a gradient magnetic field coil and shim iron.
SOLUTION: This magnetic resonance imaging system is equipped with a static magnetic field generating means for generating a static magnetic field, a gradient magnetic field generating means for generating the gradient magnetic field in the space of the static magnetic field, a uniformity adjusting means having the shim tray which holds a shim member for adjusting the uniformity of the static magnetic field and arranged between the static magnetic field generating means and the gradient magnetic field generating means and a means for suppressing the temperature variation of the shim member.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过减少导致梯度磁场线圈和垫片铁之间的对流和辐射的热传导量来抑制垫片的温度变化。解决方案：该磁共振成像系统配备有用于产生静磁场的静磁场产生装置，用于在静磁场的空间中产生梯度磁场的梯度磁场产生装置，均匀性调节具有保持用于调整静磁场的均匀性并设置在静磁场产生装置和梯度磁场产生装置之间的垫片的垫片的装置和用于抑制垫片构件的温度变化的装置。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2007014473A Magnetic shield room and magnetic resonance imaging system including the magnetic shield room 有权
标题翻译：磁屏蔽室和磁共振成像系统，包括磁屏蔽室
公开(公告)号：JP2007014473A
公开(公告)日：2007-01-25
申请号：JP2005197635
申请日：2005-07-06
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： HIGUCHI YOSHIYA , SAKAKIBARA KENJI , TAKESHIMA HIROTAKA
IPC分类号： A61B5/055 , G01R33/421 , H05K9/00
CPC分类号： G01R33/421
摘要： PROBLEM TO BE SOLVED: To improve the shield property of a leakage magnetic field in the axial direction of annular coils of an MRI apparatus and reduce an influence on the uniformity of a magnetic field of an imaging space.
SOLUTION: This magnetic shield room 1 stores an vertical magnetic field type magnetic resonance imaging apparatus 2 formed by disposing the annular coils 4a and 4b forming the magnetic field in the imaging space, vertically opposing to each other on both sides of the imaging space and has a shield surface shielding the magnetic field from the inside and outside. This magnetic shield room is formed of a magnetic plate 10a disposed in a wide area of a floor shield face 10 and an annular magnetic plate 10b supersposedly disposed with a position where the axes of the annular coils cross with each other as a center, and improves the uniformity of the magnetic field of the imaging space using the antithetical influences of the magnetic plate 10a and the annular magnetic plate 10b on the magnetic field error.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了改善MRI设备的环形线圈的轴向上的泄漏磁场的屏蔽性能，并且减小对成像空间的磁场的均匀性的影响。解决方案：该磁屏蔽室1存储垂直磁场型磁共振成像装置2，该垂直磁场型磁共振成像装置2通过将形成磁场的环形线圈4a和4b设置在成像空间中，在成像两侧彼此垂直相对并具有屏蔽表面屏蔽内外磁场。该磁屏蔽室由设置在地板屏蔽面10的大面积的磁性板10a和以环状线圈的轴线相互交叉的位置为中心的环状磁性板10b构成，并且提高使用磁性板10a和环形磁性板10b的对立的影响，成像空间的磁场的均匀性对磁场误差的影响。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2012169568A Superconducting magnet device and magnetic resonance imaging apparatus using this 审中-公开
标题翻译：超导磁体装置和磁共振成像装置
公开(公告)号：JP2012169568A
公开(公告)日：2012-09-06
申请号：JP2011031501
申请日：2011-02-17
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： NAKAYAMA TAKESHI , HIGUCHI YOSHIYA
IPC分类号： H01F6/02 , A61B5/055 , G01R33/389
摘要： PROBLEM TO BE SOLVED: To provide a superconducting magnet device that can avoid frequent occurrence of a quench phenomenon in a superconducting member of a bridge line during magnetization while reducing work man-hour.SOLUTION: A superconducting magnet device 100 includes: a plurality of superconducting coils 7, 8 which form prescribed magnetic field distribution in an observation region 4; and a bridge line 15 which short-circuits particular connection points P1, P2 on the plurality of superconducting coils 7, 8 to shield a magnetic field generated in the observation region 4 by a magnetic field generation source located outside of the superconducting magnet device 100. The bridge line 15 comprises a superconducting bridge line 18 and a matrix material 19 covering the superconducting bridge line 18. A low resistance material 22 having a smaller resistance value than the resistance value of the matrix material 19 is connected between the connection points P1, P2 in parallel in a view from an electric circuit, and arranged along the bridge line 15.
摘要翻译：要解决的问题：提供一种超导磁体装置，其可以避免在磁化期间在桥接线的超导构件中频繁出现骤冷现象，同时减少工作时间。解决方案：超导磁体装置100包括：在观察区域4中形成规定的磁场分布的多个超导线圈7,8; 以及桥接线15，其使多个超导线圈7,8上的特定连接点P1，P2短路，以通过位于超导磁体装置100外部的磁场产生源屏蔽在观察区域4中产生的磁场。桥接线15包括超导桥接线18和覆盖超导桥接线18的矩阵材料19.具有比基体材料19的电阻值更小的电阻值的低电阻材料22连接在连接点P1，P2 在电路图中并列并沿着桥接线15布置。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2011030682A Mri-pet system 审中-公开
标题翻译： MRI-PET系统
公开(公告)号：JP2011030682A
公开(公告)日：2011-02-17
申请号：JP2009178584
申请日：2009-07-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIGUCHI YOSHIYA , TAKEUCHI WATARU , TSUCHIYA KAZUTOSHI
IPC分类号： A61B5/055 , G01T1/161
摘要： PROBLEM TO BE SOLVED: To provide a 1-gantry MRI-PET system increasing independence of each of an MRI device and a PET device in development, adjustment, and maintenance, restricting the size to be similar to that of conventional MRI apparatuses, reducing effects of magnetic fields from the MRI device to the PET device, and enabling imaging an MRI image and a PET image simultaneously. SOLUTION: The system includes the MRI device having split type tunnel-shaped magnet devices axially split at the center, and the PET device in a circular form having a scintillation detector multiplying photoelectrons by a semiconductor detector or a photodiode, where the magnet devices of the MRI and the PET device are enclosed in separate containers. The PET device is inserted into the split part of the magnet devices of the MRI to compose the MRI-PET system. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供在开发，调整和维护中提高MRI装置和PET装置中的每一个的独立性的1台式MRI-PET系统，将其尺寸限制为与常规MRI装置的尺寸相似降低MRI装置对PET装置的磁场的影响，能够同时对MRI图像和PET图像进行成像。解决方案：该系统包括具有在中心轴向分裂的分裂型隧道状磁体装置的MRI装置，以及具有闪烁检测器的PET装置，该闪烁检测器通过半导体检测器或光电二极管对光电子进行倍增，其中磁体 MRI和PET装置的装置被封闭在分开的容器中。将PET装置插入到MRI的磁体装置的分割部分中以组成MRI-PET系统。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2009039183A Active shield superconducting electromagnetic apparatus and magnetic resonance imaging apparatus 有权
标题翻译：主动屏蔽超导电磁装置和磁共振成像装置
公开(公告)号：JP2009039183A
公开(公告)日：2009-02-26
申请号：JP2007204909
申请日：2007-08-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIGUCHI YOSHIYA , ABE MITSUJI , ANDO TATSUYA , YAMAMOTO TSUTOMU , HONDA TAKURO
IPC分类号： A61B5/055 , G01R33/3815 , H01F6/02 , H01F7/20
CPC分类号： G01R33/3815 , G01R33/288 , G01R33/3806 , G01R33/421 , H01F6/02
摘要： PROBLEM TO BE SOLVED: To provide an active shield superconducting electromagnetic apparatus inhibiting the flow of a large current into a superconducting current limiter if quench occurs in a main coil or shield coil. SOLUTION: The active shield superconducting electromagnetic apparatus comprises a main open/close circuit in which a first main coil 1a, a second main coil 1b, a first shield coil 2a, a second shield coil 2b and a first superconducting permanent current switch 5b are connected in series; a subordinate open/close circuit, in which a bypass circuit 6 in which the superconducting current limiter 4 and a second superconducting permanent current switch 5a are connected in series, is connected in parallel to a series circuit of the first main coil 1a and the second main coil 1b; a first closed circuit 7a in which at least one of the first main coil 1a and the first shield coil 2a is connected to a first quench protection circuit 8a in series; and a second closed circuit 7b in which at least one of the second main coil 1b and the second shield coil 2b is connected to a second quench protection circuit 8b in series. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种主动屏蔽超导电磁装置，如果在主线圈或屏蔽线圈中发生淬火，则阻止大电流流入超导限流器。主动屏蔽超导电磁装置包括主开闭电路，其中第一主线圈1a，第二主线圈1b，第一屏蔽线圈2a，第二屏蔽线圈2b和第一超导永久电流开关 5b串联连接; 其中超导限流器4和第二超导永久电流开关5a串联连接的旁路电路6并联连接到第一主线圈1a和第二主线圈1a的串联电路的从属开/闭电路主线圈1b; 第一闭合电路7a，其中第一主线圈1a和第一屏蔽线圈2a中的至少一个串联连接到第一骤冷保护电路8a; 以及第二闭合电路7b，其中第二主线圈1b和第二屏蔽线圈2b中的至少一个串联连接到第二骤冷保护电路8b。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2008048923A Mri-pet system 有权
标题翻译： MRI-PET系统
公开(公告)号：JP2008048923A
公开(公告)日：2008-03-06
申请号：JP2006228547
申请日：2006-08-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIGUCHI YOSHIYA , AMAMIYA KENSUKE
IPC分类号： A61B5/055 , G01N24/00 , G01T1/161
摘要： PROBLEM TO BE SOLVED: To provide an MRI-PET system, an integration of an MRI unit and a PET unit which can sufficiently reduce effect of a magnetic field on the PET unit from the MRI unit.
SOLUTION: The MRI-PET system is equipped with the MRI unit having an MRI gantry and the PET unit having a PET gantry and a magnetic material is provided for the PET gantry. This can sufficiently reduce effect of a magnetic field on the PET unit from the MRI unit even when the MRI unit and the PET unit are integrated. Therefore, this can provide the MRI-PET system which enables the prevention of malfunctioning or others of the PET unit as caused by a magnetic field generated in the MRI unit.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供MRI-PET系统，MRI单元和PET单元的集成，其可以充分降低来自MRI单元的PET单元上的磁场的影响。解决方案：MRI-PET系统装备有具有MRI龙门架的MRI单元，并且为PET机架提供具有PET龙门架和磁性材料的PET单元。即使MRI单元和PET单元被集成，也可以充分降低来自MRI单元的PET单元上的磁场的影响。因此，可以提供能够防止由MRI单元中产生的磁场引起的PET单元的故障等的MRI-PET系统。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2011200348A Superconductive magnet device and magnetic resonance imaging apparatus 有权
标题翻译：超导磁体装置和磁共振成像装置
公开(公告)号：JP2011200348A
公开(公告)日：2011-10-13
申请号：JP2010069122
申请日：2010-03-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KUSAKA HIROTO , HIGUCHI YOSHIYA , IMAMURA YUKINOBU
IPC分类号： A61B5/055 , G01R33/3815 , H01F6/00
摘要： PROBLEM TO BE SOLVED: To suppress electromagnetic deformation of a radiation shield at the time of rapid demagnetization and a vibration error magnetic field caused by a leak magnetic field of a gradient magnetic field coil at the time of imaging at the same time.SOLUTION: The superconductive magnet device includes: a superconductive coil having a superconductive wire wound thereon; a refrigerant container enclosing at least one superconductive coil; a radiation shield covering the refrigerant container; a vacuum container covering the radiation shield; and the gradient magnetic field coil generating a gradient magnetic field in the imaging space. A part in the circumferential direction of the radiation shield is replaced with a member with higher resistance than periphery to make a composite material with a low-resistance member, and the position of the high-resistance area is in the intermediate direction between an X-direction gradient magnetic field axis and a Y-direction gradient magnetic field axis where leak magnetic fields from the gradient magnetic field coil are few.
摘要翻译：要解决的问题：在快速退磁时抑制辐射屏蔽层的电磁变形以及同时成像时由梯度磁场线圈的泄漏磁场引起的振动误差磁场。解决方案：超导磁体装置包括：超导线圈，其上缠绕有超导线; 封闭至少一个超导线圈的制冷剂容器; 覆盖制冷剂容器的辐射屏蔽; 覆盖辐射屏蔽的真空容器; 并且梯度磁场线圈在成像空间中产生梯度磁场。辐射屏蔽的圆周方向的一部分由具有比周边更高的电阻的部件代替以制造具有低电阻部件的复合材料，并且高电阻区域的位置在X- 方向梯度磁场轴和Y方向梯度磁场轴，其中来自梯度磁场线圈的泄漏磁场很少。

8. 发明专利

JP2008130707A Superconducting magnet device and nuclear magnetic resonance imaging apparatus 有权
标题翻译：超导磁体装置和核磁共振成像装置
公开(公告)号：JP2008130707A
公开(公告)日：2008-06-05
申请号：JP2006312410
申请日：2006-11-20
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリング・アンド・サービス , 株式会社日立製作所
发明人： NAKAYAMA TAKESHI , ABE MITSUJI , WATANABE HIROYUKI , HIGUCHI YOSHIYA , KAWAMURA ATSUSHI
IPC分类号： H01F6/00 , A61B5/055 , G01R33/3815
摘要： PROBLEM TO BE SOLVED: To provide a superconducting magnet device and a nuclear magnetic resonance imaging apparatus which can generate a static magnetic field having a high intensity while reducing a mutually attracting force between a pair of opposing static magnetic field generators in a technique for generating a static magnetic field having a high intensity. SOLUTION: A pair of opposing magnetic field generators (30, 40) forming a superconducting magnet device (11) comprise a coolant container (35) containing a coolant (L) for cooling a main coil (31) and a shield coil (32), a fixing member (23) for concentrically fixing a first magnetizing member (21) and a second magnetizing member (22), and a linkage member (24) for linking an extension part (36) of the coolant container (35) to the fixing member (23). The first magnetizing member (21) is arranged so that the opposing inner end faces of the first magnetizing member are projected from an end face of the main coil (31) and outer end faces thereof opposed to the opposing inner end faces are recessed from the opposing end face of the main coil (31). COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种超导磁体装置和核磁共振成像装置，其可以产生具有高强度的静态磁场，同时减少一对相对的静磁场发生器之间的相互吸引力用于产生具有高强度的静磁场。形成超导磁体装置（11）的一对相对的磁场发生器（30,40）包括冷却剂容器（35），其包含用于冷却主线圈（31）的冷却剂（L）和屏蔽线圈（32），用于同心地固定第一磁化构件（21）和第二磁化构件（22）的固定构件（23）和用于将冷却剂容器（35）的延伸部分（36）连接的连杆构件）到固定构件（23）。第一磁化构件（21）被布置成使得第一磁化构件的相对的内端面从主线圈（31）的端面突出，并且与相对的内端面相对的外端面从主线圈（31）的相对端面。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2008125928A Magnetic resonance imaging apparatus provided with shim tray temperature controller 审中-公开
标题翻译：带有托盘温度控制器的磁共振成像装置
公开(公告)号：JP2008125928A
公开(公告)日：2008-06-05
申请号：JP2006316445
申请日：2006-11-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIGUCHI YOSHIYA
IPC分类号： A61B5/055 , G01R33/3873
摘要： PROBLEM TO BE SOLVED: To provide an MRI apparatus capable of suppressing the temperature change of a shim iron piece for magnetic field adjustment based on room temperature change and the heat generation of a gradient magnetic field coil, reducing the fluctuation of magnetic field strength and magnetic field uniformity and improving the resolution of images.
SOLUTION: The magnetic resonance imaging apparatus comprises: a magnet for generating a static magnetic field in an imaging space; the gradient magnetic field coil for generating a gradient magnetic field in the imaging space; a shim iron piece for adjusting the uniformity of the static magnetic field; a shim tray for holding the shim iron piece by an optional distribution; a transmission coil of a high frequency for exciting magnetic resonance; a reception coil for receiving nuclear magnetic resonance signals from an object; and a temperature controller for controlling the shim iron piece and the shim tray to an optional temperature. Since the shim iron piece and the shim tray are controlled to the optional temperature, the temperature change of the shim iron piece for the magnetic field adjustment based on the room temperature change and the heat generation of the gradient magnetic field coil is suppressed. Thus, the fluctuation of he magnetic field strength and the magnetic field uniformity is reduced and the resolution of the images is improved as a result.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决问题：为了提供能够根据室温变化和梯度磁场线圈的发热来抑制用于磁场调整的振动铁片的温度变化的MRI装置，减少磁场的波动强度和磁场均匀性，提高图像分辨率。解决方案：磁共振成像装置包括：用于在成像空间中产生静态磁场的磁体; 所述梯度磁场线圈用于在所述成像空间中产生梯度磁场; 用于调整静磁场均匀度的垫片铁片; 用于通过可选配件固定垫片的垫片托盘; 用于激励磁共振的高频传输线圈; 用于从物体接收核磁共振信号的接收线圈; 以及温度控制器，用于将垫片铁板和垫片托盘控制到可选的温度。由于将垫片铁板和垫片托盘控制在可选温度，所以抑制了基于室温变化和梯度磁场线圈的发热的用于磁场调整的垫片的温度变化。因此，磁场强度和磁场均匀性的波动减小，结果提高了图像的分辨率。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2008125841A Superconducting magnet apparatus and nuclear magnetic resonance imaging apparatus 有权
标题翻译：超导磁体装置和核磁共振成像装置
公开(公告)号：JP2008125841A
公开(公告)日：2008-06-05
申请号：JP2006314698
申请日：2006-11-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIGUCHI YOSHIYA , CHIBA TOMOO , KAWAMURA ATSUSHI , NAKAYAMA TAKESHI , IMAMURA YUKINOBU
IPC分类号： A61B5/055 , G01R33/3815 , H01F6/00
摘要： PROBLEM TO BE SOLVED: To reduce overloads acting on the inside even when a current in a superconducting coil fluctuates with time relating to a superconducting magnet apparatus and a nuclear magnetic resonance imaging apparatus to which it is applied. SOLUTION: Magnetization members (21, 22) disposed coaxially with the center axis (Z) of the superconducting coil and magnetized by a static magnetic field induced by a permanent current are provided with slits (21f, 22f) having openings from opposite surfaces (21b, 22b) to side peripheral surfaces (21a, 22a). COPYRIGHT: (C)2008,JPO&INPIT

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