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1. 发明授权

US06311389B1 Gradient magnetic coil apparatus and method of manufacturing the same 有权
标题翻译：梯度电磁线圈装置及其制造方法
公开(公告)号：US06311389B1
公开(公告)日：2001-11-06
申请号：US09343400
申请日：1999-06-30
申请人： Yasuhiro Uosaki , Kunio Watanabe , Masatoshi Yamashita , Yoshitomo Sakakura
发明人： Yasuhiro Uosaki , Kunio Watanabe , Masatoshi Yamashita , Yoshitomo Sakakura
IPC分类号： H01F706
CPC分类号： G01R33/3858 , G01R33/3856 , H01F41/041 , Y10T29/49071 , Y10T29/49073
摘要： A curved metal plate is adhered to an outer surface of a cylindrical jig of the same shape, the metal plate is cut along the spiral coil winding pattern, the unnecessary metal portion other than the coil winding is peeled off from the jig to leave only the coil winding on the jig, an adhesive is applied on the coil winding, and an insulating sheet is covered over the jig (the coil winding thereon). After the coil winding is adhered to the insulating sheet, the insulating sheet (together with the coil winding) is peeled off from the jig. As a result, a saddle coil adhering the spiral coil winding to the inner side of the curved cylindrical insulating sheet is manufactured. According to such manufacturing method, without requiring huge equipment such as drying furnace, the saddle coil having a desired winding pattern with high precision can be manufactured in a short time and at low cost.
摘要翻译：将弯曲的金属板粘附到相同形状的圆柱形夹具的外表面上，沿着螺旋线圈绕线图案切割金属板，除了线圈绕组之外的不必要的金属部分从夹具上剥离，仅留下线圈缠绕在夹具上，将粘合剂施加在线圈绕组上，并且绝缘片被覆盖在夹具上（线圈绕在其上）。在线圈绕组粘附到绝缘片上之后，将绝缘片（与线圈绕组一起）从夹具上剥离。结果，制造将螺旋线圈绕组附接到弯曲圆柱形绝缘片的内侧的鞍形线圈。根据这种制造方法，不需要诸如干燥炉等大型设备，能够在短时间内以低成本制造具有高精度的期望的卷绕图案的鞍形线圈。

2. 发明授权

US08575934B2 Magnetic resonance imaging apparatus and shimming apparatus with convex to concave layered stacking of shim plates 有权
标题翻译：磁共振成像装置和具有凸形到凹凸层叠垫片的匀场装置
公开(公告)号：US08575934B2
公开(公告)日：2013-11-05
申请号：US12833495
申请日：2010-07-09
申请人： Masateru Iwasa , Yoshitomo Sakakura , Kazuto Nogami , Hidekazu Tanaka
发明人： Masateru Iwasa , Yoshitomo Sakakura , Kazuto Nogami , Hidekazu Tanaka
IPC分类号： G01R33/3873 , G01R33/3875
CPC分类号： G01R33/3873
摘要： According to one embodiment, a magnetic resonance imaging apparatus includes a static magnetic-field generating unit, a gradient magnetic-field generating unit, a plurality of metal shim plates in a plate shape, and a shim holding unit. The metal shim plates adjust uniformity of the static magnetic field. The shim holding unit holds the metal shim plates in a layered state. Each of the metal shim plates includes a convex having a certain angle at a certain position, and the metal shim plates are layered such that the convex of each one metal shim plate comes into contact with a back of the bent convex of another metal shim plate.
摘要翻译：根据一个实施例，磁共振成像装置包括静态磁场产生单元，梯度磁场产生单元，多个板状的金属垫板和垫片保持单元。金属垫板调整静磁场的均匀性。垫片保持单元将金属垫片保持在分层状态。每个金属垫板包括在特定位置具有一定角度的凸起，并且金属垫板被层叠，使得每个金属垫板的凸起与另一金属垫板的弯曲凸起的背面接触。

3. 发明授权

US08519711B2 Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：US08519711B2
公开(公告)日：2013-08-27
申请号：US12751531
申请日：2010-03-31
申请人： Yoshitomo Sakakura
发明人： Yoshitomo Sakakura
IPC分类号： G01R33/48 , A61B5/05 , G01V3/00
CPC分类号： G01K7/36 , A61B5/055 , G01J2005/0077 , G01K2213/00
摘要： In an MRI apparatus, a detecting unit that includes a thermographic imaging equipment and a normal imaging camera detects a change in temperature of an imaging space from outside of the imaging space. A judging unit judges whether the imaging space has a point at a temperature greater than a threshold TH, and if the judging unit judges the imaging space has such a point with a temperature greater than the threshold, the apparatus stops the sequence that applies a gradient magnetic field to the subject.
摘要翻译：在MRI装置中，包括热成像设备和普通成像照相机的检测单元从成像空间的外部检测成像空间的温度变化。判断单元判断成像空间是否具有大于阈值TH的温度的点，并且如果判断单元判断成像空间具有温度大于阈值的点，则该设备停止应用梯度的序列磁场对主体。

4. 发明申请

US20070268021A1 Gradient magnetic coil, method of manufacturing the same, and magnetic resonance imaging apparatus having the gradient magnetic coil 有权
标题翻译：梯度磁线圈，其制造方法和具有梯度磁线圈的磁共振成像装置
公开(公告)号：US20070268021A1
公开(公告)日：2007-11-22
申请号：US11798383
申请日：2007-05-14
申请人： Yoshitomo Sakakura
发明人： Yoshitomo Sakakura
IPC分类号： G01V3/00
CPC分类号： G01R33/3858 , G01R33/288 , G01R33/3856
摘要： There is provided a magnetic resonance imaging apparatus, including a gantry which has a gradient magnetic coil generating a gradient magnetic field to be applied to a subject in a magnetostatic field, a bed which allows a top board, on which the subject is placed, to slide in a longitudinal direction, a pulse applying unit which applies a high-frequency pulse to the subject, and a high-frequency coil which detects a magnetic resonance signal generated from the subject by applying the gradient magnetic field and the high-frequency pulse, in which the gradient magnetic coil includes a plurality of line members wounded in a predetermined winding pattern, a first resin material filled in gaps between the plurality of line members, and a second resin material which has higher thermal conductivity than that of the first resin material and is filled in gaps formed between the line members by winding at least one line member of the plurality of line members.
摘要翻译：提供了一种磁共振成像装置，其包括具有梯形磁线圈的台架，该梯形磁线圈产生要施加到静磁场中的被摄体的梯度磁场，允许放置被摄体的顶板的床在纵向上滑动的脉冲施加单元，向对象施加高频脉冲的高频线圈，以及通过施加梯度磁场和高频脉冲来检测从对象产生的磁共振信号的高频线圈，其中梯度磁性线圈包括以预定的卷绕图案缠绕的多个线构件，填充在多个线构件之间的间隙中的第一树脂材料和具有比第一树脂材料的导热性更高的导热性的第二树脂材料并且通过缠绕多个线构件的至少一个线构件而填充在线构件之间形成的间隙中。

5. 发明授权

US06479998B1 Active shield type of elliptic cylinder-shaped gradient coil for magnetic resonance imaging 有权
标题翻译：用于磁共振成像的椭圆柱形梯度线圈的主动屏蔽型
公开(公告)号：US06479998B1
公开(公告)日：2002-11-12
申请号：US09863007
申请日：2001-05-23
申请人： Masao Yui , Yoshitomo Sakakura
发明人： Masao Yui , Yoshitomo Sakakura
IPC分类号： G01V300
CPC分类号： G01R33/4215
摘要： A gradient coil for magnetic resonance imaging (MRI) ha an elliptic cylindrical first coil and a second coil arranged coaxially to the first coil. The second coil is located outside the first coil in the radial direction thereof. The second coil is either elliptic-cylindrical or cylindrical winding positions of wires of the second coil are determined so that a magnetic field created outside the second coil by the first coil is cancelled out. Practically, circumferential current densities of the first and second coils are expressed by weighted even and odd functions. Ratios between weights of the second and first coils are then determined on values derived from the number of waves in the coil axial direction and a flatness rate of the ellipse. The winding positions of wires of the second coil are determined on the values.
摘要翻译：一种用于磁共振成像（MRI）的梯形线圈，其具有与第一线圈同轴布置的椭圆柱形第一线圈和第二线圈。第二线圈沿其径向方向位于第一线圈的外侧。第二线圈是椭圆柱形或第二线圈的线的圆柱形绕组位置，使得由第一线圈在第二线圈外部产生的磁场被抵消。实际上，第一和第二线圈的圆周电流密度由加权偶数和奇数函数表示。然后根据从线圈轴向的波数和椭圆的平坦度导出的值来确定第二和第一线圈的重量之间的比率。根据这些值确定第二线圈的线的绕组位置。

6. 发明申请

US20110279116A1 MAGNETIC RESONANCE DIAGNOSTIC APPARATUS 有权
标题翻译：磁共振诊断装置
公开(公告)号：US20110279116A1
公开(公告)日：2011-11-17
申请号：US13108137
申请日：2011-05-16
申请人： Yoshitomo Sakakura , Satoshi Sugiura , Tomoyuki Yoshida , Takashi Yanashima , Masateru Iwasa , Yutaka Kato , Koji Kitamura , Kazuto Nogami , Hidekazu Tanaka , Makoto Sato , Shigehide Kuhara , Taketo Kawakami , Yasutake Yasuhara , Hiroshi Sugimoto
发明人： Yoshitomo Sakakura , Satoshi Sugiura , Tomoyuki Yoshida , Takashi Yanashima , Masateru Iwasa , Yutaka Kato , Koji Kitamura , Kazuto Nogami , Hidekazu Tanaka , Makoto Sato , Shigehide Kuhara , Taketo Kawakami , Yasutake Yasuhara , Hiroshi Sugimoto
IPC分类号： G01R33/48
CPC分类号： A61B5/0555 , A61B5/015 , A61B5/1128 , A61N1/403 , A61N2/004 , G01R33/4804 , G01R33/4808
摘要： A magnetic resonance diagnostic apparatus is configured in such a manner that: a high-frequency transmission coil transmits a high-frequency electromagnetic wave at a magnetic resonance frequency to an examined subject; a heating coil performs a heating process by radiating a high-frequency electromagnetic wave onto the examined subject at a frequency different from the magnetic resonance frequency; based on a magnetic resonance signal, a measuring unit measures the temperature of the examined subject changing due to the high-frequency electromagnetic wave radiated by the heating coil; and a control unit exercises control so that the measuring unit measures the temperature while the heating coil is performing the heating process, by ensuring that the transmission of the high-frequency electromagnetic wave by the high-frequency transmission coil and the radiation of the high-frequency electromagnetic wave by the heating coil are performed in parallel.
摘要翻译：磁共振诊断装置被配置为：高频发送线圈将磁共振频率的高频电磁波发送到被检查对象; 加热线圈通过以与磁共振频率不同的频率将高频电磁波照射到被检查对象上进行加热处理; 基于磁共振信号，测量单元测量由加热线圈辐射的高频电磁波引起的检查对象变化的温度; 并且控制单元进行控制，使得测量单元在加热线圈进行加热处理时测量温度，通过确保高频传输线圈的高频电磁波的传输和高频传输线圈的辐射，并行地进行加热线圈的高频电磁波。

7. 发明申请

US20110095760A1 MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD 有权
标题翻译：磁共振成像装置和磁共振成像方法
公开(公告)号：US20110095760A1
公开(公告)日：2011-04-28
申请号：US12521804
申请日：2009-02-13
申请人： Yoshitomo Sakakura , Hiroshi Kusahara
发明人： Yoshitomo Sakakura , Hiroshi Kusahara
IPC分类号： G01R33/48
CPC分类号： G01R33/56563 , A61B5/055 , G01R33/56518 , G01R33/56572
摘要： A magnetic resonance imaging apparatus has a storage unit and a processing unit. The storage unit stores correction data of a position coordinate, in which the position coordinate in the reconstruction FOV is caused to correspond to a position coordinate in a display FOV included in the reconstruction FOV based on an intensity of a gradient magnetic field. If both of a first position coordinate and a second position coordinate, which is further from the center of the reconstruction FOV, correspond to same position coordinate in the display FOV, the correction data is data for causing only the first position coordinate to correspond to the position coordinate in the display FOV. The processing unit corrects a reconstructed image based on the correction data and obtains an image of the display FOV.
摘要翻译：磁共振成像装置具有存储单元和处理单元。存储单元存储基于梯度磁场的强度，使重建FOV中的位置坐标与包括在重建FOV中的显示器FOV中的位置坐标相对应的位置坐标的校正数据。如果距离重建FOV的中心更远的第一位置坐标和第二位置坐标都与显示器FOV中的相同位置坐标相对应，则校正数据是仅使第一位置坐标对应于位置坐标在显示FOV。处理单元基于校正数据校正重构图像，并获得显示器FOV的图像。

8. 发明申请

US20100315086A1 MAGNETIC RESONANCE IMAGING APPARATUS AND CHILLER 有权
标题翻译：磁共振成像装置和冷却器
公开(公告)号：US20100315086A1
公开(公告)日：2010-12-16
申请号：US12521831
申请日：2009-02-25
申请人： Yoshitomo Sakakura
发明人： Yoshitomo Sakakura
IPC分类号： G01R33/44
CPC分类号： H01F6/04 , G01R33/3856
摘要： By using a temperature monitor, a coil-dedicated chiller measures an amount of change in temperature of cooling water flowing out from a cooling pipe of a gradient magnetic field, determines an amount of change in temperature of cooling water to be flowed into the cooling pipe in accordance with the measured amount of change in temperature of the cooling water; and changes the temperature of cooling water to be flowed into the cooling pipe of the gradient magnetic field based on the determined amount of change in temperature.
摘要翻译：通过使用温度监视器，线圈专用冷却器测量从梯度磁场的冷却管流出的冷却水的温度变化量，确定要流入冷却管的冷却水的温度变化量按照测得的冷却水温度变化量; 并且基于所确定的温度变化量来改变要流入梯度磁场的冷却管的冷却水的温度。

9. 发明授权

US07825663B2 Gradient coil, magnetic resonance imaging apparatus and gradient coil manufacturing method 有权
标题翻译：梯度线圈，磁共振成像装置和梯度线圈制造方法
公开(公告)号：US07825663B2
公开(公告)日：2010-11-02
申请号：US12360208
申请日：2009-01-27
申请人： Yoshitomo Sakakura
发明人： Yoshitomo Sakakura
IPC分类号： G01V3/00
CPC分类号： G01R33/385 , G01R33/3858 , G01R33/4215 , H01F6/06 , H01F7/20 , Y10T29/49071
摘要： Provided is a gradient coil capable of suppressing generation of an unnecessary magnetic field component while ensuring the readiness of conducting wire winding work. The gradient coil includes a cylindrical bobbin round which the conducting wire is wound; and a winding part formed by winding the conducting wire round the bobbin by a plurality of turns, wherein the winding part has a first winding part in which the conducting wire is wound round the bobbin orthogonal to the axis of the bobbin in a circumferential direction of the bobbin and a second winding part in which the conducting wire is spirally wound round the bobbin, skewing relative to the axis of the bobbin in the circumferential direction of the bobbin.
摘要翻译：提供一种能够抑制不必要的磁场成分的产生的梯度线圈，同时确保进行绕线工作的准备。梯度线圈包括导线缠绕的圆筒形绕线筒; 以及绕线部，其通过以多个匝绕绕线轴缠绕导线而形成，其中，所述绕组部具有第一绕组部，所述绕组部在所述绕线部的周向方向上缠绕有与所述线轴的轴线正交的线轴线轴和第二绕组部分，其中导线围绕线轴螺旋地卷绕，在线轴的圆周方向上相对于线轴的轴线倾斜。

10. 发明授权

US06285188B1 Self-shielded coil with non-inductive winding 有权
标题翻译：带有无感绕组的自屏蔽线圈
公开(公告)号：US06285188B1
公开(公告)日：2001-09-04
申请号：US09257238
申请日：1999-02-25
申请人： Yoshitomo Sakakura
发明人： Yoshitomo Sakakura
IPC分类号： G01V318
CPC分类号： G01R33/385
摘要： Provided is a self-shielded gradient coil unit with no useless electromagnetic induction, which is capable of increasing the efficiency of shielding. The unit comprises an X-channel, Y-channel, and Z-channel gradient coil assemblies. Each of the X-, Y- and Z-channel gradient coil assemblies has a pair of a main coil and a shield coil. The main coil has a first patterned winding formed by a first conductive wire wound on a predetermined pattern, and the shield coil has a second patterned winding formed by a second conductive wire wound on the predetermined pattern. A shielding magnetic field provided by the shield coil preventing the gradient provided by the main coil from leaking out of the unit. At least one of the first and second conductive wires is divided at the predetermined pattern into a plurality of wires. Those divided wires (turns) are wound in parallel on the predetermined pattern to form a divided-turn structure and wound to provide a non-inductive winding against flux passing through a closed loop formed by the divided wires.
摘要翻译：提供了一种无屏蔽梯度线圈单元，无需电磁感应，可提高屏蔽效率。该单元包括X通道，Y通道和Z通道梯形线圈组件。 X，Y和Z通道梯形线圈组件中的每一个具有一对主线圈和屏蔽线圈。主线圈具有由缠绕在预定图案上的第一导线形成的第一图案绕组，屏蔽线圈具有由缠绕在预定图案上的第二导线形成的第二图案绕组。由屏蔽线圈提供的屏蔽磁场防止由主线圈提供的梯度泄漏出单元。将第一和第二导线中的至少一个以预定图案分割成多根导线。这些分开的线（匝）在预定图案上并联缠绕以形成分岔结构并且缠绕以提供非电感性绕组，以防止通过由分割线形成的闭合回路的通量。

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