公开(公告)号：US20110037467A1

公开(公告)日：2011-02-17

申请号：US12988406

申请日：2009-04-17

Applicant: Munetaka Tsuda

Inventor： Munetaka Tsuda

IPC: G01R33/48

CPC classification number: G01R33/389 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/3873 ,  G01R33/3875

Abstract: A magnetic resonance imaging apparatus includes: a pair of static magnetic field generators separately disposed at the top and bottom of an imaging space in which a subject is placed; a shim magnetic material, disposed on the imaging-space side of each of the pair of static magnetic field generators, for generating a magnetic field to adjust the static magnetic field; a gradient magnetic field generator; a high-frequency magnetic field generator; a temperature sensor for directly or indirectly measuring the temperature of the shim magnetic material; and a controller for controlling the gradient magnetic field generator and the high-frequency magnetic field generator to execute an imaging pulse sequence. The controller determines the inhomogeneity of the static magnetic field from the output of the temperature sensor, considering the change in a magnetic field adjustment parameter due to the temperature change of the shim magnetic material, and causes a warning message to be presented if the determined static magnetic field inhomogeneity has exceeded a predetermined allowable value.

Abstract translation: 一种磁共振成像装置包括：一对静态磁场发生器，分别设置在放置被摄体的成像空间的顶部和底部; 设置在所述一对静磁场发生器中的每一个的成像空间侧上的垫片磁性材料，用于产生磁场以调整静磁场; 梯度磁场发生器; 高频磁场发生器; 用于直接或间接测量垫片磁性材料的温度的温度传感器; 以及用于控制倾斜磁场发生器和高频磁场发生器以执行成像脉冲序列的控制器。 考虑到由于垫片磁性材料的温度变化引起的磁场调整参数的变化，控制器从温度传感器的输出确定静态磁场的不均匀性，并且如果确定的静态 磁场不均匀性已经超过预定的允许值。

公开(公告)号：US20070204630A1

公开(公告)日：2007-09-06

申请号：US11630220

申请日：2005-06-29

Applicant: Munetaka Tsuda

Inventor： Munetaka Tsuda

IPC: F17C5/02 ,  F17C3/10

CPC classification number: G01R33/3815

Abstract: A magnetic resonance imaging apparatus comprising a vacuum container vacuumized inside thereof, a liquid refrigerant container installed in the vacuum container to store liquid refrigerant therein, a superconducting member installed inside the liquid refrigerant container to be rendered superconductive by being impregnated in the liquid refrigerant and allow current to flow therethrough, and freezing means connected to an insertion port provided in the liquid refrigerant container to re-condense gas evaporated from the liquid refrigerant in the liquid refrigerant container, characterized in that an air flow-in preventing means is provided that raises the pressure in the liquid refrigerant container to prevent air from flowing into the insertion port of the liquid refrigerant container from the outside of the vacuum container.

Abstract translation: 一种磁共振成像装置，包括在其内抽真空的真空容器，设置在真空容器中以储存液体制冷剂的液体制冷剂容器，设置在液体制冷剂容器内部以通过浸渍在液体制冷剂中而变得超导的超导构件， 电流流过其中的冷冻装置，以及连接到设置在液体制冷剂容器中的插入口的冷冻装置，用于再次冷凝从液体制冷剂容器中的液体制冷剂蒸发的气体，其特征在于，设置有空气流入防止装置， 液体制冷剂容器中的压力，以防止空气从真空容器的外部流入液体制冷剂容器的插入口。

公开(公告)号：US06504373B2

公开(公告)日：2003-01-07

申请号：US09778995

申请日：2001-02-07

Applicant: Munetaka Tsuda

Inventor： Munetaka Tsuda

IPC: G01V300

CPC classification number: G01R33/3815

Abstract: Operation signals of a compressor 21 for a helium refrigerator 20 are inputted to a correction magnetic field power source 13, so as to generate a current in synchronism with mechanical vibration of the helium refrigerator 20. The current generated by the correction magnetic field power source 13 drives a magnetic field correction coil 14 combined with the static magnetic field generation magnet 2 so as to generate a correction magnetic field of which amplitude is equal to that of the magnetic field variation component caused by the mechanical vibration of the helium refrigerator 20 and of which phase is inverted thereto. Thereby, an open type MRI apparatus employing a super conducting magnet, which eliminates a magnetic field variation due to mechanical vibration of the helium refrigerator 20 and always maintains a stable magnetic field, is realized.

Abstract translation: 用于氦制冷机20的压缩机21的操作信号被输入到校正磁场电源13，以便与氦制冷机20的机械振动同步地产生电流。由校正磁场电源13产生的电流 驱动与静磁场产生磁体2组合的磁场校正线圈14，以产生振幅等于由氦制冷机20的机械振动引起的磁场变化分量的校正磁场，其校正磁场 相位反相。 因此，实现了采用超导磁体的开放型MRI装置，其消除了由于氦制冷机20的机械振动引起的磁场变化并且始终保持稳定的磁场。

公开(公告)号：US4339717A

公开(公告)日：1982-07-13

申请号：US154401

申请日：1979-08-15

Applicant: Munetaka Tsuda ,  Hiroshi Yokokawa ,  Yoshiharu Utsumi

Inventor： Munetaka Tsuda ,  Hiroshi Yokokawa ,  Yoshiharu Utsumi

IPC: G01R33/38 ,  G01R33/389 ,  G01R33/46 ,  G01N27/00

CPC classification number: G01R33/381 ,  G01R33/389 ,  G01R33/46

Abstract: In a nuclear magnetic resonance spectrometer, this invention relates to an improvement of a lock system for stabilizing a magnetic field intensity. It is an object of the present invention to dissolve a low stability by using a conventional voltage control oscillator and a complex operation in the case of varying a reference material for locking. In the present invention, a radio frequency of a high stable reference frequency source is demultiplied by a variable frequency divider so that a frequency modulation or a modulation of the magnetic field is effected by the output thus demultiplied. When the reference material is changed, the operation can easily be made by varying the demultiplication ratio of the variable frequency divider.

Abstract translation: PCT No.PCT / JP78 / 00045 Sec。 371日期1979年8月15日 102（e）日期1979年8月15日PCT提交1978年12月8日PCT公布。 出版物WO79 / 0041200 日本1979年7月12日。在核磁共振光谱仪中，本发明涉及用于稳定磁场强度的锁定系统的改进。 本发明的目的是通过使用传统的压控振荡器来解决低稳定性，并且在改变用于锁定的参考材料的情况下的复杂操作。 在本发明中，高稳定基准频率源的射频由可变分频器分频，使得由这样分配的输出实现磁场的频率调制或调制。 当参考材料改变时，可以通过改变可变分频器的分频比来容易地进行操作。

公开(公告)号：US10168861B2

公开(公告)日：2019-01-01

申请号：US13880143

申请日：2011-10-17

Applicant: Masaki Takase ,  Munetaka Tsuda ,  You Asakura ,  Takashi Hatakeda

Inventor： Masaki Takase ,  Munetaka Tsuda ,  You Asakura ,  Takashi Hatakeda

IPC: G06F3/0482 ,  G06F3/0488 ,  G06F3/0485

Abstract: A menu display device includes: means for displaying on a screen a given range within a menu, in which a plurality of menu items are arranged in an array; means for moving the given range in response to a predetermined operation performed by a user; means for determining whether or not the menu item at an end within the menu is displayed in a predetermined position of the screen; and means for changing, when the menu item at the end is displayed in the predetermined position of the screen, the space between the menu items displayed on the screen in response to the predetermined operation performed by the user.

公开(公告)号：US09536649B2

公开(公告)日：2017-01-03

申请号：US14237727

申请日：2012-09-05

Applicant: Munetaka Tsuda

Inventor： Munetaka Tsuda

IPC: G01V3/00 ,  H01F6/02 ,  G01R33/28 ,  G01R33/3815 ,  G01R33/385

CPC classification number: H01F6/02 ,  G01R33/288 ,  G01R33/3815 ,  G01R33/385

Abstract: In order to prevent quenching caused accidentally in a superconducting magnet, an MRI apparatus vibrates the superconducting magnet in order to prevent quenching of the superconducting magnet in a time period for which a predetermined imaging sequence is not executed (step 210). As a specific method, a gradient magnetic field may be generated by a gradient magnetic field coil for an imaging sequence of the MRI apparatus, or a gradient magnetic field may be generated using a gradient magnetic field coil for vibration provided apart from the gradient magnetic field coil for an imaging sequence. In addition, in a period for which the predetermined imaging sequence is not executed, a phantom may be imaged to prevent the quenching of the superconducting magnet.

Abstract translation: 为了防止在超导磁体中意外引起的淬火，MRI装置使超导磁体振动，以防止在不执行预定成像顺序的时间段内超导磁体的猝灭（步骤210）。 作为具体方法，可以通过用于MRI装置的成像序列的梯度磁场线圈来产生梯度磁场，或者可以使用梯度磁场线圈来产生梯度磁场，所述梯度磁场线圈与梯度磁场 线圈用于成像序列。 此外，在不执行预定成像顺序的期间，可以对体模进行成像以防止超导磁体的淬火。

公开(公告)号：US09019315B2

公开(公告)日：2015-04-28

申请号：US13606580

申请日：2012-09-07

Applicant: Munetaka Tsuda ,  Ryoma Aoki ,  Yasuto Kakimoto

Inventor： Munetaka Tsuda ,  Ryoma Aoki ,  Yasuto Kakimoto

IPC: G09G5/00 ,  G09G5/14 ,  G09G5/34

CPC classification number: G09G5/14 ,  G09G5/346 ,  G09G2340/14 ,  G09G2340/145

Abstract: An exemplary information-processing device includes: a first display controller configured to display selectively on a display a first image and a second image including the first image in a reduced size; and a second display controller configured, while the second display is displayed on the display, to display an indicator image on the display, the indicator image indicating a position of an image to be displayed when display of the second image is changed to display of the first image.

Abstract translation: 示例性信息处理设备包括：第一显示控制器，被配置为在显示器上选择性地显示第一图像和包括缩小尺寸的第一图像的第二图像; 以及第二显示控制器，当在所述显示器上显示所述第二显示器的同时，在所述显示器上显示指示图像时，所述指示图像指示当所述第二图像的显示改变为显示时要显示的图像的位置， 第一张图片。

公开(公告)号：US08723523B2

公开(公告)日：2014-05-13

申请号：US12988406

申请日：2009-04-17

Applicant: Munetaka Tsuda

Inventor： Munetaka Tsuda

IPC: G01R33/3815 ,  G01R33/389 ,  G01R33/3873 ,  G01R33/421

CPC classification number: G01R33/389 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/3873 ,  G01R33/3875

Abstract: A magnetic resonance imaging apparatus includes: a pair of static magnetic field generators separately disposed at the top and bottom of an imaging space in which a subject is placed; a shim magnetic material, disposed on the imaging-space side of each of the pair of static magnetic field generators, for generating a magnetic field to adjust the static magnetic field; a gradient magnetic field generator; a high-frequency magnetic field generator; a temperature sensor for directly or indirectly measuring the temperature of the shim magnetic material; and a controller for controlling the gradient magnetic field generator and the high-frequency magnetic field generator to execute an imaging pulse sequence. The controller determines the inhomogeneity of the static magnetic field from the output of the temperature sensor, considering the change in a magnetic field adjustment parameter due to the temperature change of the shim magnetic material, and causes a warning message to be presented if the determined static magnetic field inhomogeneity has exceeded a predetermined allowable value.

Abstract translation: 一种磁共振成像装置包括：一对静态磁场发生器，分别设置在放置被摄体的成像空间的顶部和底部; 设置在所述一对静磁场发生器中的每一个的成像空间侧上的垫片磁性材料，用于产生磁场以调整静磁场; 梯度磁场发生器; 高频磁场发生器; 用于直接或间接测量垫片磁性材料的温度的温度传感器; 以及用于控制倾斜磁场发生器和高频磁场发生器以执行成像脉冲序列的控制器。 考虑到由于垫片磁性材料的温度变化引起的磁场调整参数的变化，控制器从温度传感器的输出确定静态磁场的不均匀性，并且如果确定的静态 磁场不均匀性已经超过预定的允许值。

公开(公告)号：USD698364S1

公开(公告)日：2014-01-28

申请号：US29371702

申请日：2011-07-22

Applicant: Munetaka Tsuda ,  Hidenori Karasawa

Designer： Munetaka Tsuda ,  Hidenori Karasawa

公开(公告)号：US20130212530A1

公开(公告)日：2013-08-15

申请号：US13880143

申请日：2011-10-17

Applicant: Masaki Takase ,  Munetaka Tsuda ,  You Asakura ,  Takashi Hatakeda

Inventor： Masaki Takase ,  Munetaka Tsuda ,  You Asakura ,  Takashi Hatakeda

IPC: G06F3/0482

CPC classification number: G06F3/0482 ,  G06F3/0485 ,  G06F3/0488

Abstract: A menu display device includes: means for displaying on a screen a given range within a menu, in which a plurality of menu items are arranged in an array; means for moving the given range in response to a predetermined operation performed by a user; means for determining whether or not the menu item at an end within the menu is displayed in a predetermined position of the screen; and means for changing, when the menu item at the end is displayed in the predetermined position of the screen, the space between the menu items displayed on the screen in response to the predetermined operation performed by the user.

Abstract translation: 菜单显示装置包括：用于在屏幕上显示菜单中的给定范围的装置，其中多个菜单项以阵列排列; 用于响应于用户执行的预定操作来移动给定范围的装置; 用于确定菜单中的结束处的菜单项是否显示在屏幕的预定位置的装置; 以及用于当根据用户执行的预定操作在屏幕的预定位置显示结束时的菜单项显示在屏幕上的菜单项之间的空间的装置。