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公开(公告)号：US20120319689A1
公开(公告)日：2012-12-20
申请号：US13584002
申请日：2012-08-13
IPC分类号： G01R33/341
CPC分类号： G01R33/56383 , G01R33/3415 , G01R33/3664 , G01R33/5659
摘要： In a magnetic resonance imaging apparatus according to an embodiment, an array coil is structured by arranging a plurality of coil elements each of which receives a magnetic resonance signal generated from a subject. An acquisition controlling unit acquires the magnetic resonance signals while changing a position to be selected and excited within the subject who has the array coil attached thereon. A large-area image generating unit generates a large-area image of the subject, based on the magnetic resonance signals acquired by the acquisition controlling unit. A position measuring unit measures positions of the coil elements, based on strengths of the magnetic resonance signals used for generating the large-area image and positions of the couchtop corresponding to the times when the magnetic resonance signals were acquired.
摘要翻译： 在根据实施例的磁共振成像装置中，阵列线圈通过布置多个线圈元件而构成，每个线圈元件接收从被摄体产生的磁共振信号。 获取控制单元在改变在其上安装有阵列线圈的被摄体内被选择和激励的位置的同时获取磁共振信号。 大面积图像生成单元基于由获取控制单元获取的磁共振信号，生成被摄体的大面积图像。 位置测量单元基于用于产生大面积图像的磁共振信号的强度和与获得磁共振信号的时间相对应的沙发顶部的位置来测量线圈元件的位置。
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2.发明申请公开(公告)号：US20110074416A1
公开(公告)日：2011-03-31
申请号：US12722875
申请日：2010-03-12
IPC分类号： G01R33/48
CPC分类号： G01R33/28 , A61B5/0042 , A61B5/055 , A61B5/7285 , G01R33/54 , G01R33/5602 , G01R33/56333 , G06T7/0012
摘要： A magnetic resonance imaging apparatus includes a magnetic resonance data acquisition unit and a cerebrospinal fluid image data generation unit.The magnetic resonance data acquisition unit consecutively acquires a plurality of magnetic resonance data for generating a plurality of cerebrospinal fluid image data, each corresponding to a different data acquisition time, after a labeling pulse is applied.The cerebrospinal fluid image data generation unit generates the plurality of cerebrospinal fluid image data based on the plurality of magnetic resonance data.
摘要翻译： 磁共振成像装置包括磁共振数据获取单元和脑脊液图像数据生成单元。 在施加标记脉冲之后，磁共振数据获取单元连续地获取用于产生多个脑脊液图像数据的多个磁共振数据，每个脑脊液图像数据对应于不同的数据获取时间。 脑脊液图像数据生成单元基于多个磁共振数据生成多个脑脊液图像数据。
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3.发明申请Magnetic resonance imaging apparatus and processing method for magnetic resonance imaging collection data 有权用于磁共振成像收集数据的磁共振成像装置和处理方法公开(公告)号：US20050151538A1
公开(公告)日：2005-07-14
申请号：US11033508
申请日：2005-01-12
CPC分类号： G01R33/5611
摘要： A magnetic resonance imaging apparatus includes: a sensitivity map database that stores sensitivity map data of a multi-coil including plural coils necessary for parallel imaging unfolding processing; a data slicing unit that slices partial data from three-dimensional volume data collected for the respective coils by parallel imaging, respectively; an intermediate image reconstructing unit that executes reconstruction processing for the partial data to thereby reconstruct intermediate images for the respective coils; and a reference image generating unit that slices sensitivity map data corresponding to the intermediate images from the sensitivity map database as sensitivity map data for unfolding processing, executes the parallel imaging unfolding processing for the intermediate images using the sensitivity map data for unfolding processing, and generates reference images.
摘要翻译： 磁共振成像装置包括：灵敏度图数据库，其存储包括平行成像展开处理所需的多个线圈的多线圈的灵敏度图数据; 数据分割单元，分别通过并行成像从针对各个线圈收集的三维体积数据中分割部分数据; 中间图像重建单元，对所述部分数据执行重构处理，从而重建各个线圈的中间图像; 以及参考图像生成单元，其将来自灵敏度图数据库的与中间图像相对应的灵敏度图数据作为用于展开处理的灵敏度图数据进行切片，使用用于展开处理的灵敏度图数据执行中间图像的并行成像展开处理，并且生成 参考图像。
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公开(公告)号：US6068595A
公开(公告)日：2000-05-30
申请号：US942683
申请日：1997-10-02
申请人： Mitsue Miyazaki , Nobuyasu Ichinose
发明人： Mitsue Miyazaki , Nobuyasu Ichinose
CPC分类号： G01R33/5635 , A61B6/541 , G01R33/4835 , G01R33/5617 , G01R33/5673
摘要： By employing controlled setting of a phase-encoding direction in MRI, for imaging a tissue or blood flow composed of spins whose time T.sub.2 is rather short or ranges from 100 to 200 milliseconds, signal levels induced by the blood flow or the like are raised in order to maintain a good signal-to-noise ratio. An image enjoying an excellent depiction ability can be produced without the loss of information of directivities of blood flows or tissues running in diverse directions. An MRI system utilizing the Fourier transform comprises an element for scanning the same region to be imaged of a subject a plurality of times while changing phase-encoding directions, and an element for producing image data of one frame on the basis of MR rawdata of a plurality of frames. The producing element includes, for example, a unit for reconstructing image data in the real space by processing frame by frame MR raw data of a plurality of frames, and a unit for synthesizing reconstructed image data of the plurality of frames so as to produce image data of one frame. Synthesis is, for example, addition or maximum intensity projection.
摘要翻译： 通过采用MRI中的相位编码方向的受控设定，对于由时间T2相当短或范围为100〜200毫秒的自旋构成的组织或血流成像，血流等引起的信号电平升高 以保持良好的信噪比。 可以在不损失在不同方向上运行的血流或组织的方向性的信息的情况下产生享有优良描绘能力的图像。 使用傅立叶变换的MRI系统包括用于在改变相位编码方向的同时多次扫描被摄体的相同区域的元件，以及用于基于一个帧的MR原始数据产生一帧的图像数据的元件 多个帧。 制作元件例如包括通过多帧的逐帧MR原始数据进行处理来重建真实空间中的图像数据的单元，以及用于合成多个帧的重建图像数据的单元，以产生图像 一帧数据 合成是例如添加或最大强度投影。
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5.发明授权Magnetic resonance imaging apparatus capable of automatically determining RF coil positions 有权能够自动确定RF线圈位置的磁共振成像装置公开(公告)号：US07622920B2
公开(公告)日：2009-11-24
申请号：US11822057
申请日：2007-07-02
申请人： Yoshio Machida , Nobuyasu Ichinose
发明人： Yoshio Machida , Nobuyasu Ichinose
IPC分类号： G01V3/00
CPC分类号： G01R33/56375 , G01R33/3415 , G01R33/3664 , G01R33/5617 , G01R33/56383
摘要： A magnetic resonance imaging apparatus includes an array coil in which a plurality of element coils are arranged to receive magnetic resonance signals from a subject, a calculation unit which calculates projection data for the element coils regarding an arrangement direction of the plurality of element coils on the basis of the plurality of magnetic resonance signals received by the plurality of element coils, and a determination unit which determines the positions of the plurality of element coils or the position of the array coil on the basis of the projection data for the plurality of element coils.
摘要翻译： 磁共振成像装置包括阵列线圈，其中多个元件线圈布置成接收来自被摄体的磁共振信号;计算单元，其计算元件线圈关于多个元件线圈的排列方向的投影数据， 由多个元件线圈接收的多个磁共振信号的基础，以及确定单元，其基于多个元件线圈的投影数据确定多个元件线圈的位置或阵列线圈的位置 。
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6.发明授权Magnetic resonance imaging device and data processing method for magnetic resonance imaging device 有权磁共振成像装置及磁共振成像装置的数据处理方法公开(公告)号：US07385397B2
公开(公告)日：2008-06-10
申请号：US10539086
申请日：2005-02-25
IPC分类号： G01V3/00
CPC分类号： G01R33/3415 , G01R33/246 , G01R33/5659
摘要： A magnetic resonance imaging apparatus 20 includes a scan executing unit that executes scan to generate sensitivity map data of an RF coil 24, a region reduction unit 44b that applies region reduction to a signal region near a no-signal region of image data obtained by the scan, a sensitivity map data generating unit 44 that generates sensitivity map data using image data after the region reduction, and a smoothing processing unit 44i that applies three-dimensional smoothing filter to the sensitivity map data.
摘要翻译： 磁共振成像装置20包括扫描执行单元，其执行扫描以产生RF线圈24的灵敏度地图数据;区域缩小单元44b，其将区域缩小部分应用于图像数据的非信号区域附近的信号区域， 该扫描是在区域缩小之后使用图像数据生成灵敏度图数据的灵敏度图数据生成单元44以及将三维平滑滤波器应用于灵敏度图数据的平滑处理单元44 i。
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7.发明申请Magnetic resonance imaging apparatus, magnetic resonance imaging method and image processing apparatus 失效磁共振成像装置，磁共振成像方法和图像处理装置公开(公告)号：US20080007264A1
公开(公告)日：2008-01-10
申请号：US11822342
申请日：2007-07-05
申请人： Nobuyasu Ichinose
发明人： Nobuyasu Ichinose
IPC分类号： G01V3/00
CPC分类号： G01R33/56341 , G01R33/5608
摘要： A magnetic resonance imaging apparatus includes a unit which generates a diffusion weighted image based on a magnetic resonance signal from a object, a unit which calculates an apparent diffusion coefficient based on the diffusion weighted image, and a processing unit which subjects the diffusion weighted image to a process of indicating a region having the apparent diffusion coefficient of less than a threshold value with a highlight in contrast with other region.
摘要翻译： 磁共振成像装置包括：基于来自对象的磁共振信号生成扩散加权图像的单元，基于扩散加权图像计算表观扩散系数的单元;以及处理单元，其使扩散加权图像 与其他区域对比，以高亮度表示具有小于阈值的表观扩散系数的区域的处理。
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公开(公告)号：US20080007263A1
公开(公告)日：2008-01-10
申请号：US11822057
申请日：2007-07-02
申请人： Yoshio Machida , Nobuyasu Ichinose
发明人： Yoshio Machida , Nobuyasu Ichinose
IPC分类号： G01V3/00
CPC分类号： G01R33/56375 , G01R33/3415 , G01R33/3664 , G01R33/5617 , G01R33/56383
摘要： A magnetic resonance imaging apparatus includes an array coil in which a plurality of element coils are arranged to receive magnetic resonance signals from a subject, a calculation unit which calculates projection data for the element coils regarding an arrangement direction of the plurality of element coils on the basis of the plurality of magnetic resonance signals received by the plurality of element coils, and a determination unit which determines the positions of the plurality of element coils or the position of the array coil on the basis of the projection data for the plurality of element coils.
摘要翻译： 磁共振成像装置包括阵列线圈，其中多个元件线圈布置成接收来自被摄体的磁共振信号;计算单元，其计算元件线圈关于多个元件线圈的排列方向的投影数据， 由多个元件线圈接收的多个磁共振信号的基础，以及确定单元，其基于多个元件线圈的投影数据确定多个元件线圈的位置或阵列线圈的位置 。
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公开(公告)号：US20100259262A1
公开(公告)日：2010-10-14
申请号：US12757375
申请日：2010-04-09
申请人： Nobuyasu ICHINOSE
发明人： Nobuyasu ICHINOSE
IPC分类号： G01R33/44
CPC分类号： G01R33/3415 , G01R33/3664 , G01R33/543 , G01R33/546
摘要： A storage unit stores coil positional information that indicates a physical position of an element coil relative to a representative position set on a receiving coil. A creating unit creates profile data that indicates a distribution of Nuclear Magnetic Resonance (NMR) signals in a coil-arrangement direction. A calculating unit calculates the position of a representative position set on the receiving coil by performing a regression analysis by using the coil positional information and the profile data. A control unit causes a display unit to display the position of each element coil based on the calculated position of the representative position.
摘要翻译： 存储单元存储表示元件线圈相对于设置在接收线圈上的代表位置的物理位置的线圈位置信息。 创建单元创建表示在线圈排列方向上的核磁共振（NMR）信号的分布的轮廓数据。 计算单元通过使用线圈位置信息和轮廓数据进行回归分析来计算在接收线圈上设定的代表位置的位置。 控制单元使显示单元基于计算出的代表位置的位置来显示每个元件线圈的位置。
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10.发明授权MRI apparatus, method and process generating diffusion weighted images using apparent diffusion coefficients and threshold values 失效MRI设备，方法和过程使用表观扩散系数和阈值产生扩散加权图像公开(公告)号：US07701210B2
公开(公告)日：2010-04-20
申请号：US11822342
申请日：2007-07-05
申请人： Nobuyasu Ichinose
发明人： Nobuyasu Ichinose
IPC分类号： G01V3/00
CPC分类号： G01R33/56341 , G01R33/5608
摘要： A magnetic resonance imaging apparatus includes a unit which generates a diffusion weighted image based on a magnetic resonance signal from an object, a unit which calculates an apparent diffusion coefficient based on the diffusion weighted image, and a processing unit which subjects the diffusion weighted image to a process of indicating a region having the apparent diffusion coefficient of less than a threshold value with a highlight in contrast with other region.
摘要翻译： 磁共振成像装置包括：基于来自对象的磁共振信号生成扩散加权图像的单元，基于扩散加权图像计算表观扩散系数的单元;以及处理单元，其使扩散加权图像 与其他区域对比，以高亮度表示具有小于阈值的表观扩散系数的区域的处理。
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