公开(公告)号：US08508223B2

公开(公告)日：2013-08-13

申请号：US12751128

申请日：2010-03-31

申请人： Shinichi Kitane ,  Tokunori Kimura ,  Yuichi Yamashita

发明人： Shinichi Kitane ,  Tokunori Kimura ,  Yuichi Yamashita

IPC分类号： G01V3/00

CPC分类号： A61B5/055 ,  A61B5/0263 ,  A61B5/0456 ,  G01R33/5602 ,  G01R33/5635

摘要： A magnetic resonance imaging (MRI) apparatus acquires magnetic resonance (MR) data associated with a plurality of different delay times according to a pulse sequence in which a region-selective saturation pulse is first applied, a region-non-selective inversion recovery pulse is then applied, and then the magnetic resonance data is acquired, the delay time being defined as a period from the saturation pulse application time to the start of MR data acquisition. A plurality of blood flow image data respectively associated with the plurality of different delay times are created using the acquired MR data.

摘要翻译： 磁共振成像（MRI）装置根据首先施加区域选择性饱和脉冲的脉冲序列获取与多个不同延迟时间相关联的磁共振（MR）数据，区域 - 非选择性反转恢复脉冲为 然后应用，然后获取磁共振数据，延迟时间被定义为从饱和脉冲施加时间到开始MR数据采集的周期。 使用获取的MR数据创建分别与多个不同延迟时间相关联的多个血流图像数据。

公开(公告)号：US20110074417A1

公开(公告)日：2011-03-31

申请号：US12751128

申请日：2010-03-31

申请人： Shinichi Kitane ,  Tokunori Kimura ,  Yuichi Yamashita

发明人： Shinichi Kitane ,  Tokunori Kimura ,  Yuichi Yamashita

IPC分类号： G01R33/48

CPC分类号： A61B5/055 ,  A61B5/0263 ,  A61B5/0456 ,  G01R33/5602 ,  G01R33/5635

摘要： To provide a magnetic resonance imaging apparatus capable of acquiring a non-contrast MRA image in which a background signal is sufficiently suppressed in a shorter time. A magnetic resonance imaging apparatus has: a data acquiring unit that acquires a plurality of pieces of magnetic resonance data associated with a plurality of different delay times according to a pulse sequence in which a region-selective saturation pulse is first applied, a region-non-selective inversion recovery pulse is then applied, and then the magnetic resonance data is acquired, the delay time being defined as a period from a time of application of the saturation pulse to a time of start of acquisition of the magnetic resonance data; and a blood flow image creating unit that creates a plurality of pieces of blood flow image data associated with the plurality of different delay times using the magnetic resonance data.

摘要翻译： 提供一种能够获取在较短时间内充分抑制背景信号的非造影MRA图像的磁共振成像装置。 磁共振成像装置具有：数据获取单元，其根据首先施加区域选择性饱和脉冲的脉冲序列获取与多个不同延迟时间相关联的多个磁共振数据，区域非 然后施加选择性反转恢复脉冲，然后获取磁共振数据，延迟时间被定义为从施加饱和脉冲的时间到开始获取磁共振数据的时间的周期; 以及血流图像生成单元，其使用所述磁共振数据来生成与所述多个不同延迟时间相关联的多个血流图像数据。

公开(公告)号：US20110071384A1

公开(公告)日：2011-03-24

申请号：US12888239

申请日：2010-09-22

申请人： Tokunori Kimura ,  Masato Ikedo

发明人： Tokunori Kimura ,  Masato Ikedo

IPC分类号： A61B5/055

CPC分类号： A61B5/055 ,  A61B5/417 ,  A61B5/489 ,  G01R33/50 ,  G01R33/5601 ,  G01R33/5607 ,  G01R33/5608 ,  G01R33/5616 ,  G01R33/56308 ,  G01R33/5635 ,  G01R33/56536

摘要： A magnetic resonance imaging apparatus includes an acquisition unit that acquires first data in which a tissue of interest has higher signal intensity than a background and second data in which the tissue of interest has lower signal intensity than the background, with regard to images of the same region of the same subject, and a generation unit that generates, on the basis of the first data and the second data, third data in which the contrast of the tissue of interest to the background is higher than those in the first and second data.

摘要翻译： 磁共振成像装置包括获取单元，其获取其中感兴趣的组织具有比背景更高的信号强度的第一数据，其中感兴趣组织的信号强度比背景的信号强度低的第二数据，关于图像的图像 区域，以及生成单元，其基于第一数据和第二数据生成第三数据，其中感兴趣组织对背景的对比度高于第一和第二数据中的对比度。

公开(公告)号：US07903849B2

公开(公告)日：2011-03-08

申请号：US11404014

申请日：2006-04-14

申请人： Tokunori Kimura

发明人： Tokunori Kimura

IPC分类号： G06K9/00 ,  A61B6/00

CPC分类号： G06T7/30 ,  G06T2207/10072 ,  G06T2207/30016

摘要： A diagnosis target image is input, and a template ROI which is set on an image to divide the area on the image into predetermined areas in anatomical terms, physiological terms, or other scientific terms is read out from a storage unit. A matching processing unit warps the template ROI in correspondence with each diagnosis target image on the basis of the feature information of the diagnosis target image extracted by a feature information extraction unit. This warping is executed until an index indicating the degree of matching between the template ROI and the diagnosis image exceeds a predetermined threshold. The warped template ROI is displayed on a display unit upon being superimposed on the diagnosis image.

摘要翻译： 输入诊断对象图像，并且从存储单元读出在图像上设置的将模拟图像上的区域以解剖术语，生理学术语或其他科学术语划分为预定区域的模板ROI。 匹配处理单元根据由特征信息提取单元提取的诊断对象图像的特征信息，对应于每个诊断对象图像，对模板ROI进行变形。 执行翘曲，直到指示模板ROI和诊断图像之间的匹配度的索引超过预定阈值。 翘曲模板ROI叠加在诊断图像上时显示在显示单元上。

公开(公告)号：US07821261B2

公开(公告)日：2010-10-26

申请号：US11520809

申请日：2006-09-14

申请人： Tokunori Kimura

发明人： Tokunori Kimura

IPC分类号： G01V3/00

CPC分类号： G01R33/56 ,  G01R33/4806 ,  G01R33/481 ,  G01R33/4812 ,  G01R33/4814 ,  G01R33/5608 ,  G01R33/56308 ,  G01R33/56341

摘要： A data processing system configured to process acquired image data (e.g., as part of a diagnostic imaging apparatus) uses a signal-power estimating unit for estimating signal power by using reference data containing data different from processing-target data and a data processing unit for processing the processing-target data by using a WF (wiener filter) based on the signal power estimated by the signal-power estimating unit.

摘要翻译： 被配置为处理所获取的图像数据（例如，作为诊断成像装置的一部分）的数据处理系统使用信号功率估计单元，通过使用包含与处理对象数据不同的数据的参考数据来估计信号功率，以及数据处理单元， 通过使用基于由信号功率估计单元估计的信号功率的WF（维纳滤波器）来处理处理目标数据。

公开(公告)号：US20080071167A1

公开(公告)日：2008-03-20

申请号：US11898299

申请日：2007-09-11

申请人： Masato Ikedo ,  Tokunori Kimura

发明人： Masato Ikedo ,  Tokunori Kimura

IPC分类号： A61B5/05

CPC分类号： G01R33/56316 ,  G01R33/543 ,  G01R33/5602 ,  G01R33/5607 ,  G01R33/5611 ,  G01R33/5615 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/56545

摘要： A magnetic resonance imaging diagnostic apparatus includes a generating unit which generates a slice gradient magnetic field, a phase-encode gradient magnetic field and a read-out gradient magnetic field that extend in a slice axis, a phase-encode axis and a read-out axis, respectively, a setting unit which sets a dephase amount for weighting a signal-level decrease resulting from flows in the arteries and veins present in a region of interest of a subject, with respect to at least one axis selected form the slice axis, phase-encode axis and read-out axes, and a control unit which controls the generating unit by using a pulse sequence for a gradient echo system, which includes a dephase gradient-magnetic-field pulse that corresponds to the dephase amount set by the setting unit for the at least one axis.

摘要翻译： 磁共振成像诊断装置包括：生成单元，其生成切片梯度磁场，相位编码梯度磁场和读取梯度磁场，其在切片轴，相位编码轴和读出位置 设置单元，其设置相对于从切片轴选择的至少一个轴，对存在于对象的感兴趣区域的动脉和静脉中的流动而产生的信号电平降低进行加权的去相位量， 相位编码轴和读出轴;以及控制单元，其通过使用用于梯度回波系统的脉冲序列来控制生成单元，该梯度回波系统包括与由设定设定的去相位量对应的去相位梯度磁场脉冲 至少一个轴的单位。

公开(公告)号：US20080069417A1

公开(公告)日：2008-03-20

申请号：US11798830

申请日：2007-05-17

申请人： Tokunori Kimura

发明人： Tokunori Kimura

IPC分类号： G06K9/00

CPC分类号： G01R33/56341

摘要： An image processing apparatus includes a storage unit, a specifying unit, a calculation unit and a display unit. The storage unit stores diffusion weighted image data. The specifying unit specifies a calculation target region on the diffusion weighted image data. The calculation unit calculates at least one of a diffusion coefficient and a fractional anisotropy serving an index of diffusion anisotropy with regard to the calculation target region based on the diffusion weighted image data. The display unit displays at least one of the diffusion coefficient and the fractional anisotropy calculated by the calculation unit.

摘要翻译： 图像处理装置包括存储单元，指定单元，计算单元和显示单元。 存储单元存储扩散加权图像数据。 指定单元指定扩散加权图像数据上的计算目标区域。 计算单元基于扩散加权图像数据计算用于计算目标区域的扩散各向异性指数的扩散系数和分数各向异性中的至少一个。 显示单元显示由计算单元计算的扩散系数和分数各向异性中的至少一个。

公开(公告)号：US20080061780A1

公开(公告)日：2008-03-13

申请号：US11898110

申请日：2007-09-10

申请人： Shinya Yamada ,  Hitoshi Kanazawa ,  Tokunori Kimura ,  Masaaki Umeda

发明人： Shinya Yamada ,  Hitoshi Kanazawa ,  Tokunori Kimura ,  Masaaki Umeda

IPC分类号： A61B5/055 ,  G01N24/08

CPC分类号： G01R33/56308 ,  A61B5/0263 ,  A61B5/7285 ,  G01R33/5602 ,  G01R33/5614 ,  G01R33/5615 ,  G01R33/5616 ,  G01R33/5617 ,  G01R33/56316 ,  G01R33/56333 ,  G01R33/56509 ,  G01R33/5673 ,  G01R33/5676

摘要： A magnetic resonance imaging apparatus includes an imaging unit which applies a labeling pulse to invert a spin included in a labeling region within part of a imaging region and then collects a echo signal from a time point when an inversion time has passed from the application of the labeling pulse, and a control unit, the control unit controlling the imaging unit so that the echo signal in the imaging region is collected a plurality of times with variations in the inversion time, the control unit also controlling the imaging unit so that a time ranging from a reference time point within a biological signal obtained from a subject to the application of the labeling pulse is a time determined in accordance with the inversion time.

摘要翻译： 磁共振成像装置包括成像单元，该成像单元施加标记脉冲以反转在成像区域的一部分内的标记区域中包含的自旋，然后从反转时间过去的时间点收集回波信号， 标记脉冲和控制单元，所述控制单元控制所述成像单元，使得所述成像区域中的回波信号在所述反转时间的变化中被多次收集，所述控制单元还控制所述成像单元，使得所述时间范围 从从受试者获得的生物信号中的参考时间点到施加标记脉冲是根据反转时间确定的时间。

公开(公告)号：US20070120566A1

公开(公告)日：2007-05-31

申请号：US11520809

申请日：2006-09-14

申请人： Tokunori Kimura

发明人： Tokunori Kimura

IPC分类号： G01V3/00

CPC分类号： G01R33/56 ,  G01R33/4806 ,  G01R33/481 ,  G01R33/4812 ,  G01R33/4814 ,  G01R33/5608 ,  G01R33/56308 ,  G01R33/56341

摘要： A data processing system to have in a diagnostic imaging apparatus and so on is comprised of a signal-power estimating unit for estimating signal power by using reference data containing data different from processing-target data and a data processing unit for processing the processing-target data by using a WF based on the signal power estimated by the signal-power estimating unit.

摘要翻译： 在诊断成像装置等中具有的数据处理系统由用于通过使用包含与处理目标数据不同的数据的参考数据来估计信号功率的信号功率估计单元和用于处理处理目标的数据处理单元 通过使用基于由信号功率估计单元估计的信号功率的WF的数据。

公开(公告)号：US5406947A

公开(公告)日：1995-04-18

申请号：US970795

申请日：1992-11-03

申请人： Tokunori Kimura

发明人： Tokunori Kimura

IPC分类号： A61B5/055 ,  G01R33/48 ,  G01R33/56 ,  G01R33/563 ,  G01R33/565

CPC分类号： G01R33/56509 ,  G01R33/482 ,  G01R33/56316 ,  G01R33/56341 ,  G01R33/56366

摘要： The MR imaging apparatus for quantifying a microscopic motion in a tissue of a patient comprises a magnet, a gradient coil, a gradient power source, an RF coil, an RF coil, a transmitter, a receiver, a sequencer and a computer system. The sequencer comprises an encoding variable circuit for varying a number at which same phase encoding gradients are repeatedly applied. The encoding variable circuit preferably varies a number of applying so that a number of applying around the phase encoding gradient zero is more than a number of applying out the phase encoding gradient zero. The computer system comprises a sampling circuit for sampling the echo data as multiple echo data by each phase encoding gradient. The computer system further comprises an averaging circuit for averaging the multiple echo data by each phase encoding gradient and a calculating circuit for calculating a predetermined coeffcient related to the microscopic motion using the averaged echo data. The averaging circuit comprises an averaging variable circuit for varying a number of averages by each phase encoding gradient according to the number of applying. The averaging variable circuit preferably varies a number of averages so that a number of averages around the phase encoding gradient zero is more than a number of averages out the phase encoding gradient zero.

摘要翻译： 用于量化患者组织中的微观运动的MR成像设备包括磁体，梯度线圈，梯度电源，RF线圈，RF线圈，发射器，接收器，定序器和计算机系统。 定序器包括用于改变重复应用相同相位编码梯度的数量的编码可变电路。 编码可变电路优选地改变施加的数量，使得在相位编码梯度零周围施加的数量大于应用相位编码梯度零的数量。 计算机系统包括采样电路，用于通过每个相位编码梯度将回波数据作为多个回波数据进行采样。 计算机系统还包括用于通过每个相位编码梯度平均多个回波数据的平均电路和用于使用平均回波数据计算与微观运动相关的预定系数的计算电路。 平均电路包括平均可变电路，用于根据应用次数通过每个相位编码梯度来改变平均数。 平均可变电路优选地改变平均数，使得相位编码梯度零点周围的平均数多于相位编码梯度零的平均数。