公开(公告)号：US20140035575A1

公开(公告)日：2014-02-06

申请号：US13562656

申请日：2012-07-31

申请人： Hiroyuki Kabasawa ,  Adrian Jeremy Knowles

发明人： Hiroyuki Kabasawa ,  Adrian Jeremy Knowles

IPC分类号： G01R33/48

CPC分类号： G01R33/48 ,  G01R33/246 ,  G01R33/4828

摘要： A sensitivity distribution generating apparatus configured to generate sensitivity distribution data of a coil for receiving magnetic resonance signals from an imaging region including a first substance and a second substance different in resonant frequency is provided. The sensitivity distribution generating apparatus includes a reference image data generating unit configured to generate reference image data in which a region of the first substance is suppressed and a region of the second substance is emphasized, based on data obtained by executing a separation sequence for separating the first substance and the second substance from each other, and an estimating unit configured to estimate a sensitivity of the coil in the region of the first substance, based on a signal value of the region of the second substance in the reference image data.

摘要翻译： 一种灵敏度分布生成装置，被配置为生成用于从包括第一物质和不同谐振频率的第二物质的成像区域接收磁共振信号的线圈的灵敏度分布数据。 灵敏度分布生成装置包括基准图像数据生成部，其基于通过执行用于分离第一物质的分离顺序获得的数据，生成抑制了第一物质的区域并且强调第二物质的区域的参考图像数据 第一物质和第二物质，以及估计单元，被配置为基于参考图像数据中的第二物质的区域的信号值来估计第一物质的区域中的线圈的灵敏度。

公开(公告)号：US20100137703A1

公开(公告)日：2010-06-03

申请号：US12625246

申请日：2009-11-24

申请人： Hiroyuki Kabasawa

发明人： Hiroyuki Kabasawa

IPC分类号： A61B5/055

CPC分类号： A61B5/0263 ,  A61B5/0275 ,  A61B5/055 ,  G01R33/4835 ,  G01R33/5601 ,  G01R33/56366

摘要： A blood flow dynamic analysis apparatus for determining a baseline indicative of a signal strength prior to an arrival of a contrast agent to a predetermined region of a subject, based on MR signals collected in time series from the predetermined region of the subject with the contrast agent injected therein, includes a time detection unit for detecting a time of data minimal in signal strength, of a first data sequence in which data of signal strengths of the MR signals are arranged in time series, a data fetch unit for fetching a second data sequence which appears prior to the time detected by the time detection unit, from within the first data sequence, a data detection unit for detecting centrally-located data from within a third data sequence obtained by sorting the second data sequence in the order of magnitudes of the signals strengths, a data extraction unit for extracting data from the third data sequence, based on the centrally-located data, and a baseline determination unit for determining the baseline, based on the data extracted by the data extraction unit.

摘要翻译： 一种血流动态分析装置，用于基于从对象的预定区域以造影剂以时间序列收集的MR信号来确定指示造影剂到达对象的预定区域之前的信号强度的基线 在其中注入的时间检测单元包括用于检测信号强度的最小数据的时间的时间检测单元，其中MR信号的信号强度数据按时间顺序排列的第一数据序列，用于获取第二数据序列的数据提取单元 其在时间检测单元检测到的时间之前出现在第一数据序列内，数据检测单元，用于从第三数据序列中检测中心位置的数据，该第三数据序列通过以第 信号强度，用于从第三数据序列提取数据的数据提取单元，基于位于中心的数据，以及基线确定单元 用于基于由数据提取单元提取的数据来确定基线。

公开(公告)号：US07671592B2

公开(公告)日：2010-03-02

申请号：US12201724

申请日：2008-08-29

申请人： Hiroyuki Kabasawa

发明人： Hiroyuki Kabasawa

IPC分类号： G01V3/00

CPC分类号： G01R33/56341 ,  G01R33/5608

摘要： A magnetic resonance imaging apparatus includes a scan section which executes a diffusion weighted imaging pulse sequence on an imaging area of a subject within a static magnetic field space thereby to acquire magnetic resonance signals, an image generating part which generates an image with respect to the imaging area, based on the magnetic resonance signals acquired by the scan section, a display unit which displays the image generated by the image generating part on a display screen thereof, and a window setting part which sets a window level and a window width at the time that the display unit displays the image, based on diffusion parameters calculated from the magnetic resonance signals acquired by the scan section. The display unit displays the image on the display screen by the window level and the window width both set by the window setting part.

摘要翻译： 磁共振成像装置包括：扫描部，其对静止磁场空间内的被检体的成像区域执行扩散加权成像脉冲序列，从而获取磁共振信号;图像生成部，其生成相对于成像的图像 区域，基于由扫描部获取的磁共振信号，在其显示画面上显示由图像生成部生成的图像的显示单元，以及设定窗口等级和窗口宽度的窗口设定部 显示单元基于由扫描部分获取的磁共振信号计算的扩散参数来显示图像。 显示单元通过窗口级别和窗口宽度由窗口设置部分设置在显示屏幕上显示图像。

公开(公告)号：US07446527B2

公开(公告)日：2008-11-04

申请号：US11679708

申请日：2007-02-27

申请人： Hiroyuki Kabasawa

发明人： Hiroyuki Kabasawa

IPC分类号： G01V3/00

CPC分类号： G01R33/56527 ,  G01R33/543 ,  G01R33/56536 ,  G01R33/583

摘要： With the object of enhancing image quality, a transmission sensitivity distribution calculating part calculates a transmission sensitivity distribution by a double flip angle method. Next, a threshold processing part threshold-processes the calculated transmission sensitivity distribution. Further, an image correcting unit corrects an actual scan image using the transmission sensitivity distribution subsequent to the threshold processing.

摘要翻译： 为了提高图像质量，传输灵敏度分布计算部分通过双翻角法来计算传输灵敏度分布。 接下来，阈值处理部门阈值处理计算出的传输灵敏度分布。 此外，图像校正单元使用阈值处理之后的传输灵敏度分布来校正实际的扫描图像。

公开(公告)号：US20080157764A1

公开(公告)日：2008-07-03

申请号：US11958205

申请日：2007-12-17

申请人： Hiroyuki Kabasawa

发明人： Hiroyuki Kabasawa

IPC分类号： G01R33/54

CPC分类号： G01R33/56341 ,  G01R33/5608

摘要： A magnetic resonance imaging apparatus for generating an image related to a radiographing area of a subject on the basis of a magnetic resonance signal produced in the radiographing area within a static magnetic field space, the magnetic resonance imaging apparatus includes: a fiber tracking device for tracking a running fiber in the radiographing area on the basis of a diffusion tensor calculated from the magnetic resonance signal; and a diffusion tensor color map image generating device for generating as said image a diffusion tensor color map image so as to match a curved surface including a tract extracted in the fiber tracked by the fiber tracking device, wherein the diffusion tensor color map image generating device generates the diffusion tensor color map image in such a manner that, in the fiber tracked by the fiber tracking device, pixels corresponding to the fiber running as the tract along the curved surface are made equal in color, and the pixels corresponding to the fiber running as the tract along the curved surface and pixels corresponding to a fiber running as a fiber other than the tract in a direction different from the tract become different in color.

摘要翻译： 一种磁共振成像装置，用于根据在静止磁场空间内的放射线照相区域中产生的磁共振信号产生与被检体的放射线照相区域相关的图像，所述磁共振成像装置包括：用于跟踪的光纤跟踪装置 基于从磁共振信号计算出的扩散张量，射线照相区域中的运行光纤; 以及扩散张量色彩映射图像生成装置，用于将扩散张量色彩映射图像作为所述图像生成，以便匹配包括在由所述光纤跟踪装置跟踪的光纤中提取的光道的曲面，其中，所述扩散张量颜色映射图像生成装置 以这样的方式生成扩散张量颜色映射图像，即在由光纤跟踪装置跟踪的光纤中，使与沿着曲面的光道相对应的光纤对应的像素的颜色相等，并且与光纤对应的像素运行 因为沿着弯曲表面的路径和对应于作为不同于道路的方向的纤维以外的纤维运行的纤维的像素在颜色上变得不同。

公开(公告)号：US20080075321A1

公开(公告)日：2008-03-27

申请号：US11857259

申请日：2007-09-18

申请人： Hiroyuki Kabasawa

发明人： Hiroyuki Kabasawa

IPC分类号： G06K9/00

CPC分类号： G06F19/321 ,  G01R33/54 ,  G01R33/543 ,  G01R33/546 ,  G16H40/63

摘要： The display unit displays a plurality of inspection attributes differently in appearance, depending on the activity ratio of each of the inspection attributes calculated by an inspection activity ratio calculation device. For example, the display unit displays character strings corresponding to the plurality of inspection attributes in different font sizes or different colors, depending on the activity ratio of each inspection attribute calculated by the inspection activity ratio calculation device.

摘要翻译： 显示单元根据由检查活动率计算装置计算的每个检查属性的活动性比例，在外观上显示不同的检查属性。 例如，显示单元根据由检查活动率计算装置计算出的各检查属性的活动率，以不同的字体大小或不同的颜色显示与多个检查属性对应的字符串。

公开(公告)号：US07015696B2

公开(公告)日：2006-03-21

申请号：US11017256

申请日：2004-12-20

申请人： Hiroyuki Kabasawa

发明人： Hiroyuki Kabasawa

IPC分类号： G01V3/00

CPC分类号： G01R33/341 ,  G01R33/246 ,  G01R33/50

摘要： A method for calculating a sensitivity distribution of a receive coil and taking a tomographic image of a subject, based on magnetic resonance signals received by a surface coil in an imaging sequence with a plurality of different echo times TE1 and TE2 in a reference scan, a plurality of reference images are produced by a first reference image producing section; and based on the plurality of reference images, a T2 relaxation time is calculated by a T2 relaxation time calculating section. Then, based on the calculated T2 relaxation time, a T2-weighted image at the echo time TE2 is calculated by a T2-weighted image calculating section, and thereafter, based on the reference image and T2-weighted image at the echo time TE2, a sensitivity distribution is calculated by a sensitivity distribution calculating section. Based on the sensitivity distribution, a tomographic image by an actual scan is corrected by a correcting section.

摘要翻译： 一种基于在参考扫描中具有多个不同回波时间TE 1和TE 2的成像序列中由表面线圈接收的磁共振信号来计算接收线圈的灵敏度分布并拍摄对象的断层图像的方法 由第一参考图像产生部分产生多个参考图像; 并且基于多个参考图像，通过T 2弛豫时间计算部分计算T 2弛豫时间。 然后，基于所计算的T 2弛豫时间，通过T 2加权图像计算部分计算回波时间TE 2处的T 2加权图像，然后基于参考图像和T 2加权图像 回波时间TE 2，灵敏度分布由灵敏度分布计算部分计算。 基于灵敏度分布，通过校正部来校正实际扫描的断层图像。

公开(公告)号：US09411032B2

公开(公告)日：2016-08-09

申请号：US13562656

申请日：2012-07-31

申请人： Hiroyuki Kabasawa ,  Adrian Jeremy Knowles

发明人： Hiroyuki Kabasawa ,  Adrian Jeremy Knowles

IPC分类号： G01R33/48 ,  G01R33/24

CPC分类号： G01R33/48 ,  G01R33/246 ,  G01R33/4828

摘要： A sensitivity distribution generating apparatus configured to generate sensitivity distribution data of a coil for receiving magnetic resonance signals from an imaging region including a first substance and a second substance different in resonant frequency is provided. The sensitivity distribution generating apparatus includes a reference image data generating unit configured to generate reference image data in which a region of the first substance is suppressed and a region of the second substance is emphasized, based on data obtained by executing a separation sequence for separating the first substance and the second substance from each other, and an estimating unit configured to estimate a sensitivity of the coil in the region of the first substance, based on a signal value of the region of the second substance in the reference image data.

摘要翻译： 一种灵敏度分布生成装置，被配置为生成用于从包括第一物质和不同谐振频率的第二物质的成像区域接收磁共振信号的线圈的灵敏度分布数据。 灵敏度分布生成装置包括基准图像数据生成部，其基于通过执行用于分离第一物质的分离顺序获得的数据，生成抑制了第一物质的区域并且强调第二物质的区域的参考图像数据 第一物质和第二物质，以及估计单元，被配置为基于参考图像数据中的第二物质的区域的信号值来估计第一物质的区域中的线圈的灵敏度。

公开(公告)号：US20090058419A1

公开(公告)日：2009-03-05

申请号：US12201724

申请日：2008-08-29

申请人： Hiroyuki Kabasawa

发明人： Hiroyuki Kabasawa

IPC分类号： G01R33/483

CPC分类号： G01R33/56341 ,  G01R33/5608

摘要： A magnetic resonance imaging apparatus includes a scan section which executes a diffusion weighted imaging pulse sequence on an imaging area of a subject within a static magnetic field space thereby to acquire magnetic resonance signals, an image generating part which generates an image with respect to the imaging area, based on the magnetic resonance signals acquired by the scan section, a display unit which displays the image generated by the image generating part on a display screen thereof, and a window setting part which sets a window level and a window width at the time that the display unit displays the image, based on diffusion parameters calculated from the magnetic resonance signals acquired by the scan section. The display unit displays the image on the display screen by the window level and the window width both set by the window setting part.

摘要翻译： 磁共振成像装置包括：扫描部，其对静止磁场空间内的被检体的成像区域执行扩散加权成像脉冲序列，从而获取磁共振信号;图像生成部，其生成相对于成像的图像 区域，基于由扫描部获取的磁共振信号，在其显示画面上显示由图像生成部生成的图像的显示单元，以及设定窗口等级和窗口宽度的窗口设定部 显示单元基于由扫描部分获取的磁共振信号计算的扩散参数来显示图像。 显示单元通过窗口级别和窗口宽度由窗口设置部分设置在显示屏幕上显示图像。

公开(公告)号：US20070210794A1

公开(公告)日：2007-09-13

申请号：US11679708

申请日：2007-02-27

申请人： Hiroyuki Kabasawa

发明人： Hiroyuki Kabasawa

IPC分类号： G01V3/00

CPC分类号： G01R33/56527 ,  G01R33/543 ,  G01R33/56536 ,  G01R33/583

摘要： With the object of enhancing image quality, a transmission sensitivity distribution calculating part calculates a transmission sensitivity distribution by a double flip angle method. Next, a threshold processing part threshold-processes the calculated transmission sensitivity distribution. Further, an image correcting unit corrects an actual scan image using the transmission sensitivity distribution subsequent to the threshold processing.

摘要翻译： 为了提高图像质量，传输灵敏度分布计算部分通过双翻角法来计算传输灵敏度分布。 接下来，阈值处理部门阈值处理计算出的传输灵敏度分布。 此外，图像校正单元使用阈值处理之后的传输灵敏度分布来校正实际的扫描图像。