利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

36 条记录 (耗时 0.055 秒)

    X-ray CT apparatus and image processing method
    4.
    发明授权
    X-ray CT apparatus and image processing method 有权

    公开(公告)号：US09629596B2

    公开(公告)日：2017-04-25

    申请号：US13614341

    申请日：2012-09-13

    申请人： Hiroki Taguchi ,  Masaharu Tsuyuki

    发明人： Hiroki Taguchi ,  Masaharu Tsuyuki

    IPC分类号： A61B6/03 ,  G06K9/36 ,  A61B6/00

    CPC分类号： A61B6/488 ,  A61B6/032 ,  A61B6/481 ,  A61B6/54

    摘要： An X-ray CT apparatus has a scanner, a pre-scan control unit, an image generating unit, a region setting unit and a timing sensing unit. The pre-scan control unit controls an operation of the scanner to perform a pre-scan. The image generating unit generates image data of the object based upon the pre-scan. The region setting unit sets, on the basis of the image data, a region of interest, and a larger region encompassing the region of interest and a region around the region of interest and being used to determine whether or not a high pixel value region exists. The timing sensing unit senses, if the larger region does not include a pixel value higher than a first threshold, a timing to start a main scan, at which a pixel value of the region of interest exceeds a second threshold after injection of the contrast medium agent is started.

    X-ray computerized tomography apparatus, breathing indication apparatus and medical imaging apparatus
    5.
    发明授权
    X-ray computerized tomography apparatus, breathing indication apparatus and medical imaging apparatus 有权
    X射线计算机断层摄影装置，呼吸指示装置和医学成像装置

    公开(公告)号：US08358734B2

    公开(公告)日：2013-01-22

    申请号：US12625836

    申请日：2009-11-25

    申请人： Hitoshi Nakamura ,  Masaharu Tsuyuki ,  Tatsuo Maeda ,  Shan shan Xiao

    发明人： Hitoshi Nakamura ,  Masaharu Tsuyuki ,  Tatsuo Maeda ,  Shan shan Xiao

    IPC分类号： H05G1/62

    CPC分类号： A61B6/032 ,  A61B5/08 ,  A61B5/721 ,  A61B5/7285 ,  A61B6/5264 ,  A61B6/541 ,  G01R33/283

    摘要： An X-ray computed tomographic apparatus includes a gantry 100 including an X-ray tube 101 which generates X-rays and an X-ray detector 103 which detects X-rays transmitted through a subject to be examined, a reconstruction device 114 which generates tomogram data on the basis of an output from the X-ray detector, a breath detector 203 which detects a respiration waveform representing a temporal change in respiration index value associated with the subject, a regular respiration waveform generating unit 207 which generates a respiration waveform with a regular respiration cycle which originates from the detected respiration waveform, and a gantry mount display 201 which displays the generated regular respiration waveform.

    摘要翻译： X射线计算机断层摄影装置包括：台架100，其包括产生X射线的X射线管101和检测通过待检查对象发射的X射线的X射线检测器103;重建装置114，其生成断层图像 基于来自X射线检测器的输出的数据，呼吸检测器203，其检测表示与被检体相关联的呼吸指数值的时间变化的呼吸波形;正常呼吸波形生成单元207，其生成呼吸波形 来自检测到的呼吸波形的正常呼吸循环，以及显示所产生的常规呼吸波形的龙门架安装显示器201。

    X-ray CT apparatus
    6.
    发明授权
    X-ray CT apparatus 有权
    X射线CT装置

    公开(公告)号：US08351565B2

    公开(公告)日：2013-01-08

    申请号：US12177262

    申请日：2008-07-22

    申请人： Masaharu Tsuyuki ,  Miwa Okumura ,  Yasuko Fujisawa

    发明人： Masaharu Tsuyuki ,  Miwa Okumura ,  Yasuko Fujisawa

    IPC分类号： G01N23/00

    CPC分类号： A61B6/481 ,  A61B6/032 ,  A61B6/463 ,  A61B6/465 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541

    摘要： A CT value of an image within a region of interest is calculated with time. While the calculated CT value does not exceed a predetermined threshold value, a reconstruction mode used when an image is reconstructed from projection data is set to half reconstruction. On the other hand, while the calculated CT value exceeds a predetermined threshold value, the reconstruction mode is set to segment reconstruction.

    摘要翻译： 计算感兴趣区域内的图像的CT值。 当计算的CT值不超过预定阈值时，将从投影数据重建图像时使用的重建模式设置为半重构。 另一方面，当计算的CT值超过预定阈值时，将重建模式设置为分段重建。

    X-ray computerized tomography apparatus, breathing indication apparatus and medical imaging apparatus
    7.
    发明授权
    X-ray computerized tomography apparatus, breathing indication apparatus and medical imaging apparatus 有权
    X射线计算机断层摄影装置，呼吸指示装置和医学成像装置

    公开(公告)号：US07839975B2

    公开(公告)日：2010-11-23

    申请号：US11870633

    申请日：2007-10-11

    申请人： Hitoshi Nakamura ,  Masaharu Tsuyuki ,  Tatsuo Maeda ,  Shan Shan Xiao

    发明人： Hitoshi Nakamura ,  Masaharu Tsuyuki ,  Tatsuo Maeda ,  Shan Shan Xiao

    IPC分类号： G01N23/083 ,  H05G1/62

    CPC分类号： A61B6/032 ,  A61B5/08 ,  A61B5/721 ,  A61B5/7285 ,  A61B6/5264 ,  A61B6/541 ,  G01R33/283

    摘要： An X-ray computed tomographic apparatus includes a gantry 100 including an X-ray tube 101 which generates X-rays and an X-ray detector 103 which detects X-rays transmitted through a subject to be examined, a reconstruction device 114 which generates tomogram data on the basis of an output from the X-ray detector, a breath detector 203 which detects a respiration waveform representing a temporal change in respiration index value associated with the subject, a regular respiration waveform generating unit 207 which generates a respiration waveform with a regular respiration cycle which originates from the detected respiration waveform, and a gantry mount display 201 which displays the generated regular respiration waveform.

    摘要翻译： X射线计算机断层摄影装置包括：台架100，其包括产生X射线的X射线管101和检测通过待检查对象发射的X射线的X射线检测器103;重建装置114，其生成断层图像 基于来自X射线检测器的输出的数据，呼吸检测器203，其检测表示与被检体相关联的呼吸指数值的时间变化的呼吸波形;正常呼吸波形生成单元207，其生成呼吸波形 来自检测到的呼吸波形的正常呼吸循环，以及显示所产生的常规呼吸波形的龙门架安装显示器201。

    X-ray computed tomography apparatus
    8.
    发明授权
    X-ray computed tomography apparatus 有权
    X射线计算机断层摄影装置

    公开(公告)号：US07251308B2

    公开(公告)日：2007-07-31

    申请号：US10919431

    申请日：2004-08-17

    申请人： Masaharu Tsuyuki

    发明人： Masaharu Tsuyuki

    IPC分类号： G01N23/083

    CPC分类号： A61B6/541 ,  A61B5/0456 ,  A61B6/032 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612

    摘要： An X-ray computerized tomographic apparatus comprising a gantry which scans a patient with X-rays in order to acquire data on the patient, a decision unit which decides completion of the acquisition of the data on the basis of an electrocardiac waveform of the patient, and a scan controller which controls the gantry in order to end the scan or irradiation with the X-rays when the completion of the data acquisition has been decided.

    摘要翻译： 一种X射线计算机断层摄影装置，其特征在于，具有：扫描患者X射线以便获取患者数据的台架;判定部，其根据患者的心电波形判定完成了所述数据; 以及扫描控制器，当完成数据采集已被确定时，控制台架以结束X射线的扫描或照射。

    X-ray CT apparatus and X-ray radiographic method
    9.
    发明授权
    X-ray CT apparatus and X-ray radiographic method 有权
    X射线CT装置和X射线摄影法

    公开(公告)号：US07881423B2

    公开(公告)日：2011-02-01

    申请号：US11467811

    申请日：2006-08-28

    申请人： Masaharu Tsuyuki ,  Toyoaki Tanaka

    发明人： Masaharu Tsuyuki ,  Toyoaki Tanaka

    IPC分类号： A61B6/00

    CPC分类号： A61B6/032 ,  A61B6/5235

    摘要： An X-ray CT apparatus is adapted for switchover between a CT mode to obtain a tomographic image of a subject and a transmission mode to obtain a transmission image of the subject, depending upon projection data acquired in an imager system thereof. The apparatus includes an image-data storage device that stores image data of the subject in a three-dimensional region, a three-dimensional image processor that performs a three-dimensional image processing on the image data and generates three-dimensional image data, for display, corresponding to a line-of-sight direction inputted from an input device, and a transmission-image generator that generates the transmission image as to the image-taking direction, from data acquired in the imager system aligned by the CPU.

    摘要翻译： X射线CT装置适于在CT模式之间进行切换，以获得被摄体的断层图像和透射模式，以根据在其成像系统中获取的投影数据来获得被摄体的透射图像。 该装置包括存储三维区域中的被摄体的图像数据的图像数据存储装置，对该图像数据进行三维图像处理并生成三维图像数据的三维图像处理装置，生成三维图像数据， 显示，对应于从输入装置输入的视线方向，以及发送图像生成器，从通过CPU对准的成像器系统中获取的数据，生成关于拍摄方向的发送图像。

    X-ray computed tomographic apparatus, image processing apparatus, and image processing method
    10.
    发明授权
    X-ray computed tomographic apparatus, image processing apparatus, and image processing method 有权
    X射线计算机断层摄影装置，图像处理装置和图像处理方法

    公开(公告)号：US07298813B2

    公开(公告)日：2007-11-20

    申请号：US11367461

    申请日：2006-03-06

    申请人： Masaharu Tsuyuki ,  Satoru Nakanishi ,  Satoshi Saito

    发明人： Masaharu Tsuyuki ,  Satoru Nakanishi ,  Satoshi Saito

    IPC分类号： A61B6/03

    CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/4085 ,  A61B6/541 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/005 ,  G06T2211/412

    摘要： An X-ray computed tomographic apparatus includes a gantry unit having a detector having X-ray detection element rows along a slice direction and an X-ray tube and acquiring projection data from a subject by helical scanning, an extraction unit extracting first and second projection data sets corresponding to first and second heartbeat periods from the acquired projection data, each of the first and second projection data sets covering an angle range required for the reconstruction of one frame image, a processing unit weighting each of the extracted first and second projection data sets with a weight corresponding to a data acquisition position and generating a third data set by combining the weighted first and second projection data sets, and a reconstruction processing unit reconstructing one frame image data set on the basis of the generated third data set.

    摘要翻译： 一种X射线计算机断层摄影装置，具备：具有检测器的台架单元，具有沿着切片方向的X射线检测元件列和X射线管，并且通过螺旋扫描获取来自被检体的投影数据;提取单元，提取第一和第二投影 从获取的投影数据对应于第一和第二心跳周期的数据集，第一和第二投影数据集中的每一个覆盖重建一帧图像所需的角度范围;处理单元，对提取的第一和第二投影数据 以对应于数据获取位置的权重设置，并通过组合加权的第一和第二投影数据集合产生第三数据集，以及重构处理单元，基于所生成的第三数据集重建一帧图像数据集。