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11. 发明授权

US5939962A Split type magnetic field generating apparatus for MRI 失效
标题翻译：用于MRI的分割型磁场产生装置
公开(公告)号：US5939962A
公开(公告)日：1999-08-17
申请号：US906001
申请日：1997-08-04
申请人： Yasuyuki Tahara , Hajime Tanabe , Hirotaka Takeshima
发明人： Yasuyuki Tahara , Hajime Tanabe , Hirotaka Takeshima
IPC分类号： G01R33/38 , G01R33/381 , H01F5/08
CPC分类号： G01R33/381 , G01R33/3806
摘要： Annular portions are arranged on mutually confronting surfaces at circumferential edge portions of low-temperature containers, the annular portions forming annular containing portions whose cross section is rectangular. Not only a side coil among a group of coils forming a collective coil body is disposed inside the containing portion, but also a gradient magnetic field unit, a radio-frequency transmission coil, and a reception coil are disposed inside a recessed portion so as to be integrated with one another into a single body, the recessed portion being formed so as to be surrounded by the corresponding annular portion. The side coil supplies more than half a designed magnetomotive force. Since a distance J of the mutually confronting low-temperature containers, i.e., the distance between the mutually confronting surfaces of the side coils can be reduced by a distance corresponding to the projection of the projected portions, not only the designed magnetomotive force can be reduced, but also the apparatus can be downsized and inexpensive.
摘要翻译：环状部分布置在低温容器的圆周边缘部分的相互面对的表面上，环形部分形成截面为矩形的环形容纳部分。形成集体线圈体的一组线圈中的侧线圈不仅设置在容纳部内，而且还设置有倾斜磁场单元，射频发送线圈和接收线圈，彼此一体地形成为一体，该凹部被形成为被相应的环形部分包围。侧线圈提供超过一半设计的磁动力。由于相互面对的低温容器的距离J，即侧面线圈的相互面对的面之间的距离可以减小与突出部分的突起相对应的距离，不仅可以减小设计的磁动势，而且该装置也可以小型化和便宜化。

12. 发明授权

US07605587B2 Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
公开(公告)号：US07605587B2
公开(公告)日：2009-10-20
申请号：US11791878
申请日：2005-11-29
申请人： Hirotaka Takeshima
发明人： Hirotaka Takeshima
IPC分类号： G01V3/00
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 is provide that includes 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 portion 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 portion.
摘要翻译：提供一种磁共振成像装置，其包括围绕成像空间布置的静态磁场产生装置，其中被检体将被定位并在成像空间中产生静态磁场; 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。梯度磁场产生装置在静止磁场产生装置上朝向成像空间附近具有凹部。高频磁场产生装置的至少一部分包含在凹部中。

13. 发明授权

US07307421B2 Magnetic resonance imaging device 有权
标题翻译：磁共振成像装置
公开(公告)号：US07307421B2
公开(公告)日：2007-12-11
申请号：US10554164
申请日：2004-04-22
申请人： Akira Kurome , Kenji Sakakibara , Hirotaka Takeshima , Takeshi Yatsuo , Hiroyuki Watanabe , Yoshihide Wadayama , Hirofumi Motoshiromizu , Kunihito Suzuki
发明人： Akira Kurome , Kenji Sakakibara , Hirotaka Takeshima , Takeshi Yatsuo , Hiroyuki Watanabe , Yoshihide Wadayama , Hirofumi Motoshiromizu , Kunihito Suzuki
IPC分类号： G01V3/00
CPC分类号： G01R33/3854 , G01R33/3856
摘要： An MRI apparatus having a configuration that reduces vibration of a static magnetic field generating source is provided. A closed vessel 2 of the static magnetic field generating source is provided with a rigid structure 4 for preventing transmission of vibration generated from a gradient magnetic field generating part 21 to other members via the closed vessel 2. The rigid structure 4 uses, for example, a connecting part 4 that connects a face 25 on the imaging space side and a face 26 confronting it. The rigidity of the closed vessel is thereby increased, and therefore vibration transmitted from the gradient magnetic field generating part can be reduced. The connecting part can have a through-hole structure, and in such a case, internal space of through-hole can be used for drawing cables.
摘要翻译：提供了具有减小静磁场产生源的振动的结构的MRI装置。静态磁场产生源的密闭容器2具有刚性结构4，用于防止从梯形磁场产生部分21产生的振动经由密封容器2传递到其它部件。刚性结构4使用例如连接成像空间侧的面25和面对面26的连接部4。因此，密闭容器的刚性增加，因此可以减少从梯度磁场产生部件传递的振动。连接部件可以具有通孔结构，在这种情况下，可以使用通孔的内部空间来拉制电缆。

14. 发明申请

US20060279285A1 Gradient coil apparatus for magnetic resonance imaging system 失效
标题翻译：用于磁共振成像系统的梯度线圈装置
公开(公告)号：US20060279285A1
公开(公告)日：2006-12-14
申请号：US11444309
申请日：2006-06-01
申请人： Hiroshi Morita , Ryozo Takeuchi , Akira Kurome , Takeshi Yatsuo , Hirotaka Takeshima
发明人： Hiroshi Morita , Ryozo Takeuchi , Akira Kurome , Takeshi Yatsuo , Hirotaka Takeshima
IPC分类号： G01V3/00
CPC分类号： G01R33/3856
摘要： The present invention provides a gradient coil apparatus for magnetic resonance imaging system capable of enhancing electrical insulation performance and cooling performance. A gradient coil apparatus for magnetic resonance imaging system comprising plurality of gradient coils 11a, 11b and 11c for applying a gradient magnetic field to a test object and an internal heat exchanger 14 to be immersed in insulation oil 13 in a container 12. A pump 16 is disposed to circulate coolant between the internal heat exchanger 14 and an external heat exchanger 15 disposed outside of the container 12. This arrangement allows the insulation oil only inside of the container, thereby ensuring a substantial reduction in the amount of insulation oil.
摘要翻译：本发明提供一种能够提高电气绝缘性能和冷却性能的磁共振成像系统的梯度线圈装置。一种用于磁共振成像系统的梯度线圈装置，包括用于向测试对象施加梯度磁场的多个梯度线圈11a，11b和11c，以及浸入容器12中的绝缘油13中的内部热交换器14。泵16设置成在内部热交换器14和设置在容器12外部的外部热交换器15之间循环冷却剂。这种布置允许仅在容器内部的绝缘油，从而确保绝缘油的量显着减少。

15. 发明授权

US08698499B2 Electromagnet devices compatible with magnetic resonance and MRI devices where circulating current directions alternate between coil groups separated by elevation angles between 26.25 and 55 degrees 有权
标题翻译：与磁共振和MRI装置兼容的电磁体装置，其中循环电流方向在由26.25和55度之间的仰角分开的线圈组之间交替
公开(公告)号：US08698499B2
公开(公告)日：2014-04-15
申请号：US12516077
申请日：2007-09-19
申请人： Mitsushi Abe , Hiroyuki Watanabe , Hirotaka Takeshima
发明人： Mitsushi Abe , Hiroyuki Watanabe , Hirotaka Takeshima
IPC分类号： G01R33/381 , G01R33/3815
CPC分类号： G01R33/3806 , G01R33/3815 , H01F7/202
摘要： An electromagnet device which generates magnetic field in the direction perpendicular to the inserting direction of an inspection subject is reduced in size and weight by removing unnecessary arrangement as much as possible. A magnetic resonance imaging device is also provided. The electromagnet device comprises a first coil (31) through which a first circular current (J1) circulates forward, a second coil (32) through which a second circular current (J2) circulates reversely, and a coil group (30) through which a plurality of circular currents (J3-J6) circulate alternately forward and reversely. The first coil (30), the second coil (32) and the coil group (30) are arranged in this order to increase the angle of elevation θ (θ1
摘要翻译：通过尽可能地去除不必要的布置，在与检查对象的插入方向垂直的方向上产生磁场的电磁装置的尺寸和重量减小。还提供了一种磁共振成像装置。电磁体装置包括第一线圈（31），第一圆形电流（J1）向前循环;第二线圈（32），第二圆形电流（J2）通过该线圈反向循环;线圈组（30）多个圆形电流（J3-J6）交替地向前和向后循环。第一线圈（30），第二线圈（32）和线圈组（30）以此顺序排列以增加仰角; （＆Thetas; 1 <＆thetas; 2 <＆thetas; 3）和不包括第二线圈（32）和线圈组（30）的空白区域（S）存在于仰角和角度之间的角度区域中; 2和＆thetas; 3。

16. 发明授权

US08581586B2 Method of calculating coil pattern, and gradient magnetic field coil 有权
标题翻译：线圈图案计算方法和梯度磁场线圈
公开(公告)号：US08581586B2
公开(公告)日：2013-11-12
申请号：US12933255
申请日：2009-03-27
申请人： Mitsushi Abe , Hirotaka Takeshima
发明人： Mitsushi Abe , Hirotaka Takeshima
IPC分类号： G01V3/00
CPC分类号： G01R33/385
摘要： A coil pattern calculation method includes calculating a current potential at each contact between finite surface elements forming each of the coil surfaces based on an initial value of an input current potential distribution, and, for each of the coil surfaces, repeatedly calculating the current potential alternately and, under each magnetic field condition, determining a current potential distribution that generates a magnetic field falling within the range of allowable error for each target magnetic field so that a surface current represented by the current potential will become close to a target magnetic field distribution set for each of the finite surface elements; and determining a coil pattern from the contour lines of the determined current potential distribution.
摘要翻译：线圈图案计算方法包括基于输入电流分布的初始值来计算形成每个线圈表面的有限表面元件之间的每个接触处的电流电位，并且对于每个线圈表面，交替重复地计算电流电势并且在每个磁场条件下，确定产生每个目标磁场的容许误差范围内的磁场的电流分布，使得由电流电位表示的表面电流将变得接近目标磁场分布集对于每个有限表面元素; 以及从所确定的电流分布的轮廓线确定线圈图案。

17. 发明申请

US20110018540A1 METHOD OF CALCULATING COIL PATTERN, AND GRADIENT MAGNETIC FIELD COIL. 有权
标题翻译：计算线圈图案和梯度磁场线圈的方法。
公开(公告)号：US20110018540A1
公开(公告)日：2011-01-27
申请号：US12933255
申请日：2009-03-27
申请人： Mitsushi Abe , Hirotaka Takeshima
发明人： Mitsushi Abe , Hirotaka Takeshima
IPC分类号： G01R33/44
CPC分类号： G01R33/385
摘要： The present invention eliminate the limitation of coil pattern design, facilitates the fabrication, and improves the accuracy of magnetic field. A coil pattern calculation method is characterized by comprising the steps of: calculating a current potential at each contact between finite surface elements forming each of the coil surfaces based on an initial value of an input current potential distribution, and, for each of the coil surfaces, repeatedly calculating the current potential alternately and, under each magnetic field condition, determining a current potential distribution that generates a magnetic field falling within the range of allowable error for each target magnetic field so that a surface current represented by the current potential will become close to a target magnetic field distribution set for each of the finite surface elements; and determining a coil pattern from the contour lines of the determined current potential distribution.
摘要翻译：本发明消除了线圈图案设计的限制，便于制造，并且提高了磁场的精度。线圈图案计算方法的特征在于包括以下步骤：基于输入电流分布的初始值来计算形成每个线圈表面的有限表面元件之间的每个接触处的电流电势，并且对于每个线圈表面，交替地重复计算电流，并且在每个磁场条件下，确定产生每个目标磁场的容许误差范围内的磁场的电流分布，使得由当前电位表示的表面电流变得接近到每个有限表面元件的目标磁场分布集合; 以及从所确定的电流分布的轮廓线确定线圈图案。

18. 发明授权

US06876198B2 Magnetic resonance imaging system 失效
标题翻译：磁共振成像系统
公开(公告)号：US06876198B2
公开(公告)日：2005-04-05
申请号：US10380115
申请日：2001-09-11
申请人： Shigeru Watanabe , Tetsuhiko Takahashi , Hirotaka Takeshima , Hiromichi Shimizu
发明人： Shigeru Watanabe , Tetsuhiko Takahashi , Hirotaka Takeshima , Hiromichi Shimizu
IPC分类号： A61B5/055 , G01R33/28 , G01R33/54 , G01R33/561 , G01V3/00
CPC分类号： G01R33/285 , A61B5/055 , G01R33/54 , G01R33/5611
摘要： A magnetic resonance imaging apparatus is provided with a sequencer for executing a rapid imaging sequence of up to 100 ms at a full scan, a parallel measurement system for executing a partial encoding measurement in which the number of phase encoding operations performed for the measurement is reduced, an image processing system for reconstructing images from the information obtained though parallel measurements and composing reconstructed images of a plurality of areas to make one image, a display system for displaying the obtained images at a rate of 50 frame/second or more, and an image renewal system for taking in coordinate information of the cross-section to be imaged from position and pointing devices at intervals of about 0.1 second, and renewing the cross-section to be imaged in real time. Thus, imaging on the cross-sections indicated by a device can be performed in real time with high spatial and high time resolution.
摘要翻译：磁共振成像装置设置有用于在全扫描时执行高达100ms的快速成像序列的定序器，用于执行部分编码测量的并行测量系统，其中对测量执行的相位编码操作的数量减少，图像处理系统，用于根据通过并行测量获得的信息重构图像，并且构成多个区域的重建图像以形成一个图像;显示系统，用于以50帧/秒以上的速率显示所获得的图像;以及图像更新系统，用于以约0.1秒的间隔获取要从位置和指点设备成像的横截面的坐标信息，并实时更新要成像的横截面。因此，可以以高空间和高时间分辨率实时地执行由装置指示的横截面上的成像。

19. 发明授权

US06498488B2 Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
公开(公告)号：US06498488B2
公开(公告)日：2002-12-24
申请号：US09992356
申请日：2001-11-13
申请人： Hirotaka Takeshima , Yoshihide Wadayama
发明人： Hirotaka Takeshima , Yoshihide Wadayama
IPC分类号： G01V300
CPC分类号： G01R33/383 , G01R33/56518
摘要： A magnetic resonance imaging apparatus is provided with a pair of static magnetic field uniformity controlling members 30A and 30B which are disposed adjacent to respective pair of magnetic plates 25A and 25B and of which cross sections configured so as to further enhance static magnetic field uniformity in static magnetic field region 21 and a pair of flat plate shaped eddy current suppressing members 29A and 29B which are disposed adjacent to respective pair of gradient magnetic field coils 28A and 28B and shield influences of gradient magnetic field generated by the gradient magnetic field coils 28A and 28B on the static magnetic field uniformity controlling members 30A and 30B of pole pieces. The eddy current suppressing members 29A and 29B are easily manufactured from a flat plate member simply by cutting the same while following the shape of the gradient magnetic field coils 28A and 28B. Further, with the provision of the eddy current suppressing members 29A and 29B influences due to eddy current and residual magnetism induced by the gradient magnetic field coils 28A and 28B on the static magnetic field uniformity controlling members 30A and 30B are suppressed and uniformity in the uniform static magnetic field region is enhanced.
摘要翻译：磁共振成像装置设置有一对静磁场均匀性控制部件30A和30B，这些静止磁场均匀性控制部件30A和30B设置在相应的一对磁性板25A和25B附近，并且其横截面被配置为进一步增强静态磁场均匀性磁场区域21和与各对梯度磁场线圈28A，28B相邻配置的一对平板状的涡流抑制部件29A，29B以及由倾斜磁场线圈28A，28B产生的倾斜磁场的屏蔽影响在极片的静磁场均匀性控制构件30A和30B上。涡流抑制部件29A，29B容易由平板部件简单地通过沿着倾斜磁场线圈28A，28B的形状切割而制作。此外，由于涡电流抑制部件29A和29B由涡流引起的影响，由静磁场均匀性控制部件30A和30B上的梯度磁场线圈28A和28B引起的剩余磁体被抑制，均匀的均匀性静磁场区域增强。

20. 发明授权

US07755359B2 Magnetic resonance imaging apparatus with noise suppressing structure 失效
标题翻译：具有噪声抑制结构的磁共振成像装置
公开(公告)号：US07755359B2
公开(公告)日：2010-07-13
申请号：US11628097
申请日：2005-05-25
申请人： Takashi Yamamizu , Shichihei Sakuragi , Hirotaka Takeshima , Hiroyuki Takeuchi
发明人： Takashi Yamamizu , Shichihei Sakuragi , Hirotaka Takeshima , Hiroyuki Takeuchi
IPC分类号： G01V3/00
CPC分类号： G01R33/3873 , A61B5/055 , G01R33/3806 , G01R33/3815 , G01R33/3854
摘要： A magnetic resonance imaging apparatus capable of suppressing noise caused by vibration of a gradient magnetic field coil and improving image quality includes a large number of ferromagnetic shims disposed in a large number of holes formed in a shim tray, and vibration dampers disposed in holes formed in the shim tray to reduce noise generated by vibration of a gradient magnetic field generating coil.
摘要翻译：能够抑制由梯度磁场线圈的振动引起的噪声并提高图像质量的磁共振成像装置包括大量设置在形成于垫片托盘中的大量孔中的铁磁垫片，以及设置在形成于垫片托盘，以减少由梯度磁场产生线圈的振动产生的噪音。

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