公开(公告)号：US5566220A

公开(公告)日：1996-10-15

申请号：US378095

申请日：1995-01-25

申请人： Yasuo Saito ,  Mitsuru Yahata ,  Tadaharu Kobayashi ,  Masahiko Yamazaki

发明人： Yasuo Saito ,  Mitsuru Yahata ,  Tadaharu Kobayashi ,  Masahiko Yamazaki

IPC分类号： H01J35/14 ,  H05G1/26 ,  H05G1/52 ,  H01J35/00

CPC分类号： H05G1/26 ,  H01J35/14 ,  H05G1/52

摘要： In an X-ray computerized tomography apparatus, a water phantom is interposed between an X-ray tube unit and an X-ray detector in place of a subject under examination and a plurality of pieces of data detected by a plurality of X-ray detector elements are previously measured as a pieces of compensation data while shifting the X-focal point to different positions. Compensation data corresponding to the actual position of the X-ray focal point, which shifts according to the thermal state of the X-ray tube unit, is selected to correct detect data obtained for a subject under examination, permitting optimum compensation of variations in sensitivity among the X-ray detector elements for any position of the X-ray focal point, thereby preventing a ring-like artifact from being produced on a tomography image.

摘要翻译： 在X射线计算机断层摄影装置中，代替受检对象，在X射线管单元和X射线检测器之间插入水体，并且由多个X射线检测器检测出多个数据 元素先前被测量为一块补偿数据，同时将X焦点移动到不同的位置。 选择与根据X射线管单元的热状态移动的X射线焦点的实际位置对应的补偿数据，以校正对被检查对象获得的检测数据，从而允许对灵敏度变化的最佳补偿 在用于X射线焦点的任何位置的X射线检测器元件中，从而防止在断层摄影图像上产生环状假象。

公开(公告)号：US5838756A

公开(公告)日：1998-11-17

申请号：US778820

申请日：1997-01-03

申请人： Katsuyuki Taguchi ,  Tadaharu Kobayashi

发明人： Katsuyuki Taguchi ,  Tadaharu Kobayashi

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/027 ,  Y10S378/901

摘要： A radiation CT apparatus comprises a radiation source for irradiating a subject with radiations, detection section having at least two detector columns to detect radiations allowed to pass through the subject, section for obtaining data to be backprojected in accordance with data detected by the detection section, and image reconstruction section for reconstructing a transmitted image of the subject, wherein the image reconstructing section includes first backprojection section for backprojecting detected data to a predetermined centering plane, and second backprojection section for backprojecting data backprojected to the centering plane to the voxels corresponding to backprojected data.

摘要翻译： 辐射CT装置包括用于辐射照射对象的辐射源，具有至少两个检测器列的检测部分，用于检测允许通过被检体的辐射部分，用于根据检测部分检测到的数据获得要反向投影的数据， 以及图像重建部分，用于重建被摄体的透射图像，其中图像重建部分包括用于将检测到的数据反向投影到预定中心平面的第一反投影部分和用于将反向投影到定中心面的数据反投影到对应于反投影的体素的第二反投影部分 数据。

公开(公告)号：US20070285421A1

公开(公告)日：2007-12-13

申请号：US11760341

申请日：2007-06-08

申请人： Tadaharu Kobayashi

发明人： Tadaharu Kobayashi

IPC分类号： G06T17/00

CPC分类号： A61B8/00 ,  A61B8/483 ,  G06T15/08 ,  G06T2207/20182

摘要： A transmitter/receiver obtains scanning data by transmitting ultrasonic waves to a subject to be examined and receiving reflected waves from the subject to be examined. An image processor converts the scanning data into image data represented by a predetermined coordinate system and applies a predetermined smoothing process to the image data. The image processor calculates the vector of each point, based on the image data after the smoothing process. The image processor generates three-dimensional image data by applying a ray-tracing process to the image data to which the smoothing process has not been applied, according to the vector.

摘要翻译： 发射机/接收机通过向被检查对象发送超声波并从被检查对象接收反射波来获得扫描数据。 图像处理器将扫描数据转换为由预定坐标系表示的图像数据，并将预定的平滑处理应用于图像数据。 图像处理器基于平滑处理后的图像数据来计算每个点的向量。 图像处理器根据该矢量向未应用平滑处理的图像数据应用光线跟踪处理来生成三维图像数据。

公开(公告)号：US20070038103A1

公开(公告)日：2007-02-15

申请号：US11458233

申请日：2006-07-18

申请人： Tadaharu Kobayashi

发明人： Tadaharu Kobayashi

IPC分类号： A61B8/00

CPC分类号： G01S15/8993 ,  A61B8/14 ,  A61B8/483 ,  A61B8/543 ,  G01S7/52085 ,  G01S7/52088 ,  G01S15/8979

摘要： A transmitting/receiving circuit drives an ultrasonic probe in accordance with a trigger signal based on an electrocardiographic waveform under the control of a control device so as to scan a plurality of regions, and obtains scan data for each region. During the scanning, the transmitting/receiving circuit causes the ultrasonic probe to scan the respective regions so that scan data in which time phases of the electrocardiographic waveform substantially coincide are obtained in the vicinities of the boundary between at least two adjacent regions among the plurality of regions. That is, in adjacent regions, the transmitting/receiving circuit causes the ultrasonic probe to scan the respective regions in the main or sub-scanning directions set to be reverse to each other. Further, an image processor generates ultrasonic image data of the range in which the plurality of regions are joined, on the basis of the scan data obtained by starting scanning at the same time phase.

摘要翻译： 发送/接收电路在控制装置的控制下，根据基于心电图波形的触发信号来驱动超声波探头，以扫描多个区域，并获得每个区域的扫描数据。 在扫描期间，发送/接收电路使得超声波探头扫描各个区域，使得在多个区域中的至少两个相邻区域之间的边界附近获得心电波形的时间相位基本一致的扫描数据 地区。 也就是说，在相邻区域中，发送/接收电路使超声波探头扫描主要或副扫描方向上相应的区域。 此外，图像处理器基于通过在相位开始扫描获得的扫描数据来生成连接了多个区域的范围的超声波图像数据。

公开(公告)号：US09084543B2

公开(公告)日：2015-07-21

申请号：US13706516

申请日：2012-12-06

申请人： Tadaharu Kobayashi

发明人： Tadaharu Kobayashi

IPC分类号： A61B6/03 ,  A61B6/02 ,  A61B6/00

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/4441 ,  A61B6/487 ,  A61B6/5205 ,  A61B6/544

摘要： According to one embodiment, an X-ray diagnostic apparatus includes an X-ray source, an X-ray detector, a rotating mechanism, a control unit, and a reconstruction unit. The source irradiates an object with X-rays. The detector outputs projection data by detecting X-rays transmitted through the object. The rotating mechanism rotates the source and the detector around the object. The control unit acquires projection data, while making the rotating mechanism rotate the source and the detector, such that the number of views in a specific view angle range becomes larger than that in other view angle ranges. The reconstruction unit configured to reconstruct an image by using acquired projection data of each view.

摘要翻译： 根据一个实施例，X射线诊断装置包括X射线源，X射线检测器，旋转机构，控制单元和重建单元。 光源用X射线照射物体。 检测器通过检测透过物体的X射线输出投影数据。 旋转机构使源和检测器围绕物体旋转。 控制单元获取投影数据，同时使旋转机构旋转源和检测器，使得特定视角范围内的视图数量大于其他视角范围内的视图数量。 所述重建单元被配置为通过使用每个视图的获取的投影数据来重建图像。

公开(公告)号：US08718344B2

公开(公告)日：2014-05-06

申请号：US13153921

申请日：2011-06-06

申请人： Tadaharu Kobayashi ,  Takayuki Ishikawa ,  Shingo Abe

发明人： Tadaharu Kobayashi ,  Takayuki Ishikawa ,  Shingo Abe

IPC分类号： G06K9/00

CPC分类号： A61B6/5217 ,  A61B6/466 ,  A61B6/469 ,  A61B6/504 ,  A61B6/563 ,  A61B8/0858 ,  A61B8/0891 ,  A61B8/466 ,  A61B8/469 ,  A61B8/483 ,  A61B8/5223 ,  A61B8/565 ,  G06F19/00 ,  G06F19/321 ,  G06T19/003 ,  G06T2210/41

摘要： An image processing apparatus and a medical image diagnosis apparatus comprise a creation unit, a designation unit, a measurement unit, and a display control unit. The creation unit is configured to create a virtual endoscopic image observed using a preset viewpoint position and a preset line-of-sight direction based on 3-dimensional image data. The designation unit is configured to analyze the 3-dimensional image data to designate a plaque portion and/or a calcification portion. The measurement unit is configured to measure information on spatial distribution of the plaque portion and/or the calcification portion designated by the designation unit. The display control unit is configured to perform control to display the virtual endoscopic image created by the creation unit and the information on spatial distribution measured by the measurement unit.

摘要翻译： 图像处理装置和医学图像诊断装置包括创建单元，指定单元，测量单元和显示控制单元。 创建单元被配置为基于三维图像数据创建使用预设视点位置和预设视线方向观察到的虚拟内窥镜图像。 指定单元被配置为分析三维图像数据以指定斑块部分和/或钙化部分。 测量单元被配置为测量由指定单元指定的斑块部分和/或钙化部分的空间分布的信息。 显示控制单元被配置为执行控制以显示由创建单元创建的虚拟内窥镜图像和由测量单元测量的关于空间分布的信息。

公开(公告)号：US07881774B2

公开(公告)日：2011-02-01

申请号：US11458233

申请日：2006-07-18

申请人： Tadaharu Kobayashi

发明人： Tadaharu Kobayashi

IPC分类号： A61B5/05

CPC分类号： G01S15/8993 ,  A61B8/14 ,  A61B8/483 ,  A61B8/543 ,  G01S7/52085 ,  G01S7/52088 ,  G01S15/8979

摘要： A transmitting/receiving circuit drives an ultrasonic probe in accordance with a trigger signal based on an electrocardiographic waveform under the control of a control device so as to scan a plurality of regions, and obtains scan data for each region. During the scanning, the circuit causes the probe to scan the respective regions so that scan data in which time phases of the electrocardiographic waveform substantially coincide are obtained in the vicinities of the boundary between at least two adjacent regions among the regions. That is, in adjacent regions, the circuit causes the probe to scan the respective regions in the main or sub-scanning directions set to be reverse to each other. Further, an image processor generates ultrasonic image data of the range in which the regions are joined, on the basis of the scan data obtained by starting scanning at the same time phase.

摘要翻译： 发送/接收电路在控制装置的控制下，根据基于心电图波形的触发信号来驱动超声波探头，以扫描多个区域，并获得每个区域的扫描数据。 在扫描期间，电路使探针扫描各个区域，使得在区域中的至少两个相邻区域之间的边界附近获得其中心电波形的时间相位基本一致的扫描数据。 也就是说，在相邻区域中，电路使得探针扫描主要或副扫描方向上相应的区域，使其彼此相反。 此外，图像处理器基于通过在相位开始扫描获得的扫描数据来生成区域被连接的范围的超声波图像数据。

公开(公告)号：US20070145317A9

公开(公告)日：2007-06-28

申请号：US10777681

申请日：2004-02-13

申请人： Tadaharu Kobayashi ,  Miwa Okumura

发明人： Tadaharu Kobayashi ,  Miwa Okumura

IPC分类号： F16K31/02

CPC分类号： F16K39/04 ,  F16K31/0613 ,  G06T5/002 ,  G06T2207/20012 ,  G06T2207/20192 ,  G06T2207/30004

摘要： An image processing apparatus is provided for reducing noise from an original image consisting of digital image data. The apparatus has an information calculator, smoothed image producer, weighting-factor calculator, and weighting adder. The information calculator calculates information in relation to a pixel-value change representing a degree that becomes larger with a spatial change in a pixel value averaged each predetermined area on the original image. The smoothed image producer produces a smoothed image by smoothing the original image. The weighting-factor calculator calculates a weighting factor depending on the calculated information in relation to the pixel-value change. The weighting adder mutually performing, using the weighting factor, weighting addition with either the original image or an image modulated from the original image and the produced smoothed image.

摘要翻译： 提供一种用于减少由数字图像数据组成的原始图像的噪声的图像处理装置。 该装置具有信息计算器，平滑图像生成器，加权因子计算器和加权加法器。 信息计算器计算与代表原始图像上的每个预定区域平均的像素值的空间变化变大的像素值变化相关的信息。 平滑的图像生成器通过平滑原始图像产生平滑的图像。 加权因子计算器根据与像素值变化相关的计算的信息来计算加权因子。 加权加法器使用加权因子与原始图像或从原始图像调制的图像和产生的平滑图像相加来进行加权相加。

公开(公告)号：US07822242B2

公开(公告)日：2010-10-26

申请号：US10777681

申请日：2004-02-13

申请人： Tadaharu Kobayashi ,  Miwa Okumura

发明人： Tadaharu Kobayashi ,  Miwa Okumura

IPC分类号： G06K9/00

CPC分类号： F16K39/04 ,  F16K31/0613 ,  G06T5/002 ,  G06T2207/20012 ,  G06T2207/20192 ,  G06T2207/30004

摘要： An image processing apparatus is provided for reducing noise from an original image consisting of digital image data. The apparatus has an information calculator, smoothed image producer, weighting-factor calculator, and weighting adder. The information calculator calculates information in relation to a pixel-value change representing a degree that becomes larger with a spatial change in a pixel value averaged each predetermined area on the original image. The smoothed image producer produces a smoothed image by smoothing the original image. The weighting-factor calculator calculates a weighting factor depending on the calculated information in relation to the pixel-value change. The weighting adder mutually performing, using the weighting factor, weighting addition with either the original image or an image modulated from the original image and the produced smoothed image.

摘要翻译： 提供一种用于减少由数字图像数据组成的原始图像的噪声的图像处理装置。 该装置具有信息计算器，平滑图像生成器，加权因子计算器和加权加法器。 信息计算器计算与代表原始图像上的每个预定区域平均的像素值的空间变化变大的像素值变化相关的信息。 平滑的图像生成器通过平滑原始图像产生平滑的图像。 加权因子计算器根据与像素值变化相关的计算的信息来计算加权因子。 加权加法器使用加权因子与原始图像或从原始图像调制的图像和产生的平滑图像相互执行加权相加。

公开(公告)号：US07852334B2

公开(公告)日：2010-12-14

申请号：US11760341

申请日：2007-06-08

申请人： Tadaharu Kobayashi

发明人： Tadaharu Kobayashi

IPC分类号： G06T15/00

CPC分类号： A61B8/00 ,  A61B8/483 ,  G06T15/08 ,  G06T2207/20182

摘要： A transmitter/receiver obtains scanning data by transmitting ultrasonic waves to a subject to be examined and receiving reflected waves from the subject to be examined. An image processor converts the scanning data into image data represented by a predetermined coordinate system and applies a predetermined smoothing process to the image data. The image processor calculates the vector of each point, based on the image data after the smoothing process. The image processor generates three-dimensional image data by applying a ray-tracing process to the image data to which the smoothing process has not been applied, according to the vector.

摘要翻译： 发射机/接收机通过向被检查对象发送超声波并从被检查对象接收反射波来获得扫描数据。 图像处理器将扫描数据转换为由预定坐标系表示的图像数据，并将预定的平滑处理应用于图像数据。 图像处理器基于平滑处理后的图像数据来计算每个点的向量。 图像处理器根据该矢量向未应用平滑处理的图像数据应用光线跟踪处理来生成三维图像数据。