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    • 2. 发明授权
    • MRI apparatus, operation method thereof, and quenching prevention device
    • MRI装置及其操作方法和淬火防止装置
    • US09536649B2
    • 2017-01-03
    • US14237727
    • 2012-09-05
    • Munetaka Tsuda
    • Munetaka Tsuda
    • G01V3/00H01F6/02G01R33/28G01R33/3815G01R33/385
    • H01F6/02G01R33/288G01R33/3815G01R33/385
    • 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.
    • 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。
    • 4. 发明授权
    • Magnetic resonance imaging apparatus with temperature sensor for predicting static magnetic field inhomogeneity
    • 具有预测静态磁场不均匀性的温度传感器的磁共振成像装置
    • US08723523B2
    • 2014-05-13
    • US12988406
    • 2009-04-17
    • Munetaka Tsuda
    • Munetaka Tsuda
    • G01R33/3815G01R33/389G01R33/3873G01R33/421
    • G01R33/389G01R33/3806G01R33/3815G01R33/3873G01R33/3875
    • 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.
    • 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。
    • 6. 发明申请
    • METHOD OF ASSOCIATING MULTIPLE APPLICATIONS
    • 相关应用方法
    • US20130326540A1
    • 2013-12-05
    • US13606720
    • 2012-09-07
    • Munetaka TSUDARyoma AOKIYasuto KAKIMOTO
    • Munetaka TSUDARyoma AOKIYasuto KAKIMOTO
    • G06F9/46
    • G06F17/30864
    • An exemplary information-processing device includes: a display controller configured, when a second application program, capable of performing a search is activated during execution of a first application program, to display a second image displayed as a result of execution of the activated second application program, and a first image that has been displayed as a result of execution of the first application program before activation of the second application program; and an execution controller configured to notify the second application program of an event corresponding to an input operation, to execute a process according to a procedure described in the second application program, while maintaining the first image to be displayed.
    • 示例性信息处理设备包括:显示控制器,当在执行第一应用程序期间激活能够执行搜索的第二应用程序时,显示作为执行所激活的第二应用的结果显示的第二图像 程序,以及在第二应用程序激活之前作为执行第一应用程序的结果显示的第一图像; 以及执行控制器,被配置为向所述第二应用程序通知与输入操作相对应的事件,以在保持要显示的所述第一图像的同时执行根据所述第二应用程序中描述的过程的处理。
    • 9. 发明授权
    • Open-type MRI apparatus, and open-type superconducting MRI apparatus
    • 开放型MRI装置和开放型超导MRI装置
    • US08466681B2
    • 2013-06-18
    • US12673372
    • 2008-08-25
    • Munetaka TsudaKenji Sakakibara
    • Munetaka TsudaKenji Sakakibara
    • G01V3/00
    • A61B5/055G01R33/3806G01R33/3854G01R33/3873
    • Provided is an open-type MRI apparatus comprising a pair of magnetic field generating means arranged to face each other across a space for imaging an object, a pair of static magnetic field generating means holding means for holding the pair of static magnetic field generating means at a predetermined interval, and a pair of tabular gradient magnetic coil structures arranged on the imaging space side of the static magnetic field generating means. The individual tabular gradient magnetic coil structures are fixed on their individually facing static magnetic field generating means at a plurality of positions for suppressing the deformations, which occur in the gradient magnetic coil structures, by the Lorentz forces which act, when driving electric currents are fed to gradient magnetic coils, on the coil conductors.
    • 本发明提供一种开放型磁共振成像装置,其包括:一对磁场产生装置,被配置成在物体成像用空间上彼此相对;一对静磁场产生装置保持装置,用于将一对静磁场产生装置保持在 以及布置在静磁场产生装置的成像空间侧上的一对平板状梯度磁线圈结构。 各个平板梯度磁线圈结构在多个位置固定在其各自的静磁场产生装置上,用于通过在驱动电流被馈送时作用的洛伦兹力来抑制发生在梯度电磁线圈结构中的变形 到线圈导体上的梯度磁线圈。
    • 10. 发明授权
    • Image display control device, image display method, and information storage medium
    • 图像显示控制装置,图像显示方法和信息存储介质
    • US08295638B2
    • 2012-10-23
    • US12376240
    • 2007-06-13
    • Munetaka TsudaKoichi Sato
    • Munetaka TsudaKoichi Sato
    • G06K9/40
    • G09G5/10G06T13/80G09G2310/04G09G2320/0261G09G2320/103G09G2340/10
    • To provide an image display control device capable of displaying a process for switching images in a manner readily recognizable by an observer when sequentially displaying a plurality of images on a display device. An image display control device displays a first image at a predetermined position in a predetermined display area, then repetitively carries out a process for producing and displaying a first transitional image in which the first image is displayed at a first display position in the display area, with brightness lowered for at least a partial area in the display area, while moving the first display position in a direction going away from the predetermined position, then repetitively carries out a process for producing and displaying a second transitional image in which a second image is displayed at a second display position in the display area, with the brightness lowered for at least the partial area in the display area, while moving the second display position in a direction approaching the predetermined position, and thereafter displays the second image at the predetermined position.
    • 提供一种图像显示控制装置,当在显示装置上顺序显示多个图像时,能够以观察者容易识别的方式显示用于切换图像的处理。 图像显示控制装置在预定显示区域中的预定位置显示第一图像,然后重复地执行用于产生和显示在显示区域中的第一显示位置处显示第一图像的第一过渡图像的处理, 在显示区域中的亮度降低至少部分区域的同时,在远离预定位置的方向上移动第一显示位置,然后重复地执行用于产生和显示其中第二图像是第二图像的第二过渡图像的处理 显示在显示区域中的第二显示位置,同时在接近预定位置的方向上移动第二显示位置时,亮度降低至显示区域中的部分区域,然后将第二图像显示在预定位置 。