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31. 发明授权

US07251355B2 Three-dimensional labeling apparatus and method 失效
标题翻译：三维贴标仪及方法
公开(公告)号：US07251355B2
公开(公告)日：2007-07-31
申请号：US10266274
申请日：2002-10-08
申请人： Akihiko Nishide
发明人： Akihiko Nishide
IPC分类号： G06K9/00
CPC分类号： G06T7/00
摘要： When labeling is performed for a three-dimensional image, the present invention aims to reduce time required for labeling in the three-dimensional image by three-dimensionally referring connection relationships among image areas. To achieve this object, the following processing is performed. A variable i of label number is initialized to 1 (step S901), and pixels whose pixel value is 1 are searched for (step S902). The first time that a pixel whose pixel value is 1 is detected (step S903), the label number of the pixel is set to i (1) (step S904). When the next pixel (target pixel) whose pixel value is 1 is detected (step S905), if plural pixels having label numbers are detected within a three-dimensional neighboring mask, the smallest label number is assigned as the label number of the target pixel (step S907). If one pixel is detected, the label number is assigned as the label number of the target pixel. If all pixel values (except the target pixel) within the three-dimensional neighboring mask are 0, a label number (i+1) is assigned as the label number of the target pixel (step S909).
摘要翻译：当对于三维图像进行标记时，本发明旨在通过三维地参考图像区域之间的连接关系来减少在三维图像中标记所需的时间。为了实现该目的，进行以下处理。将标签号的变量i初始化为1（步骤S901），搜索像素值为1的像素（步骤S902）。检测像素值为1的像素的第一次（步骤S903），将像素的标号设定为i（1）（步骤904）。当检测到像素值为1的下一个像素（目标像素）时（步骤S 905），如果在三维相邻掩模内检测到具有标号的多个像素，则将最小标签号分配为目标的标号像素（步骤S907）。如果检测到一个像素，则将标签号分配为目标像素的标签号。如果三维相邻掩模内的所有像素值（目标像素除外）为0，则将标签号（i + 1）分配为目标像素的标号（步骤S909）。

32. 发明申请

US20070019779A1 X-ray CT apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：US20070019779A1
公开(公告)日：2007-01-25
申请号：US11489065
申请日：2006-07-19
申请人： Akihiko Nishide , Naoyuki Kawachi
发明人： Akihiko Nishide , Naoyuki Kawachi
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/5205 , A61B6/027 , A61B6/032
摘要： A data acquisition device, which has an X-ray detector including a plurality of channel widths at which channels at its central portion are fine and channels at its peripheral portions are coarse or rough, and a plurality of data acquisition ranges including a data acquisition range wide in a channel direction and a data acquisition range narrow in the channel direction, and which is capable of performing switching among the data acquisition ranges for each data acquisition, is used to perform data acquisition on the channels fine at the central portion in the data acquisition range narrow in the channel direction, whereby an X-ray CT apparatus is provided which is capable of performing high-resolution imaging and brings about more satisfactory image quality.
摘要翻译：一种数据采集装置，其具有X射线检测器，该X射线检测器包括多个通道宽度，其中心部分处的通道精细，其周边部分的通道粗糙或粗糙;多个数据采集范围包括数据采集范围在信道方向上宽的数据采集范围和在信道方向上窄的数据采集范围，并且能够在每个数据采集的数据采集范围之间进行切换，用于在数据的中心部分处精细地对信道执行数据采集获取范围在通道方向上窄，由此提供能够执行高分辨率成像并且带来更令人满意的图像质量的X射线CT装置。

33. 发明授权

US07082181B2 Image reconstruction method and X-ray CT system 失效
标题翻译：图像重建方法和X射线CT系统
公开(公告)号：US07082181B2
公开(公告)日：2006-07-25
申请号：US11124946
申请日：2005-05-09
申请人： Akihiko Nishide , Tetsuya Horiuchi
发明人： Akihiko Nishide , Tetsuya Horiuchi
IPC分类号： A61B6/00
CPC分类号： G06T5/002 , G06T5/50 , G06T11/005 , G06T11/008 , G06T2207/10081 , G06T2207/30004 , Y10S378/901
摘要： A method for reconstructing an image that can be recognized stably during CAD. The method for reconstructing an image on the basis of a plurality of views of projection data items provided by X-rays having passed through a subject includes image reconstruction dedicated to a computer-aided detection (CAD) mode. The image reconstruction comprises a reconstruction function dedicated to the CAD mode, includes pre-processing that includes a noise removal filter for removing a noise from projection data, such as, a streaky artifact removal dedicated to the CAD mode, and also includes post-processing that includes a noise removal filter dedicated to the CAD mode.
摘要翻译：一种用于重建可在CAD中稳定识别的图像的方法。基于通过被摄体的X射线提供的投影数据项的多个视图来重建图像的方法包括专用于计算机辅助检测（CAD）模式的图像重建。图像重建包括专用于CAD模式的重建功能，包括预处理，包括用于从投影数据去除噪声的噪声去除滤波器，例如专用于CAD模式的条纹伪像去除，并且还包括后处理其包括专用于CAD模式的噪声去除滤波器。

34. 发明授权

US06937697B2 X-ray data collecting apparatus and X-ray CT apparatus 失效
标题翻译： X射线数据采集装置和X射线CT装置
公开(公告)号：US06937697B2
公开(公告)日：2005-08-30
申请号：US10738053
申请日：2003-12-17
申请人： Akihiko Nishide , Hirofumi Yanagita
发明人： Akihiko Nishide , Hirofumi Yanagita
IPC分类号： A61B6/03 , G01N23/04 , G06T11/00 , H05G1/44
CPC分类号： G06T11/005 , A61B6/032 , A61B6/4021 , G01N23/046 , G01N2223/419 , G01N2223/612
摘要： An X-ray data collecting apparatus includes a first integrating means periodically executes sequential integration on detected signals from a plurality of X-ray detector elements corresponding to measurement channels in an X-ray detection apparatus at a constant time difference over a constant time period longer than the time difference; a second integrating means periodically executes sequential integration on detected signals from a plurality of X-ray detector elements corresponding to reference channels in the plurality of detector element rows in the X-ray detection apparatus at the same time difference as the constant time difference over the same time period as the constant time period; and a correcting means X-ray-dose corrects signals integrated by the first integrating means by signals integrated by the second integrating means that are integrated at the same time as the signals integrated by the first integration means, respectively.
摘要翻译：一种X射线数据采集装置，包括：第一积分装置，在恒定时间间隔周期性地对来自X射线检测装置中与X射线检测装置的测量通道对应的X射线检测元件的检测信号进行连续的积分，比时差; 第二积分装置周期性地对来自与X射线检测装置中的多个检测器元件行中的参考通道相对应的多个X射线检测器元件的检测信号以与该恒定时间差相同的时间差执行顺序积分相同时间段为恒定时间段; 以及校正装置X射线剂量校正由第一积分装置积分的信号，由与第一积分装置积分的信号同时积分的由第二积分装置积分的信号进行校正。

35. 发明授权

US06845144B2 Three dimensional back projection method and an X-ray CT apparatus 有权
标题翻译：三维反投影法和X射线CT装置
公开(公告)号：US06845144B2
公开(公告)日：2005-01-18
申请号：US10360588
申请日：2003-02-08
申请人： Akihiko Nishide , Sarah K. Patch
发明人： Akihiko Nishide , Sarah K. Patch
IPC分类号： A61B6/03 , G06T11/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421 , Y10S378/901
摘要： To perform cone beam reconstruction by using projection data correctly corresponding to X-ray beam having passed through each pixel in the reconstruction area, data D1 is obtained which is plane projected to a plane based on projection data D0. Then, plane projection data D1 to the projection plane pp is projected to the reconstruction area in the direction of X-ray transmission to obtain back projection pixel data D2. Thereafter, back projection pixel data D2 will be added for each corresponding pixel for all views to obtain back projection data D3. The present invention provides reconstruction by device of projection data correctly corresponding to the X-ray beam having passed through the reconstruction area. Through the plane projection to a plane the operation will become simplified and faster.
摘要翻译：为了通过使用正确对应于穿过重建区域中的每个像素的X射线束的投影数据来执行锥形束重建，获得基于投影数据D0投影到平面的平面的数据D1。然后，将平面投影数据D1与投影平面pp投影到X射线透射方向的重建区域，以获得反投影像素数据D2。此后，将针对所有视图为每个对应的像素添加背投影像素数据D2，以获得反投影数据D3。本发明通过设备对通过重建区域的X射线束正确地对准投影数据。通过平面投影到平面，操作将变得简单和快速。

36. 发明授权

US5309356A Three-dimensional reprojected image forming apparatus 失效
标题翻译：三维重建图像形成装置
公开(公告)号：US5309356A
公开(公告)日：1994-05-03
申请号：US502916
申请日：1990-04-02
申请人： Akihiko Nishide , Kazushige Takahashi
发明人： Akihiko Nishide , Kazushige Takahashi
IPC分类号： G06T3/00 , G06T11/00 , G06F15/42
CPC分类号： G06T3/0068 , G06T11/006
摘要： Continuous tomographic image data obtained by a tomographic image forming unit such as an X-ray CT scanner is stored in a two-dimensional image memory under the control of a control computer. A two-dimensional space filtering processor, a two-dimensional affine transformation processor and a two-dimensional image addition processor are connected to the control computer and execute two-dimensional affine transformation, two-dimensional image addition and two dimensional space filtering of the tomographic image data, so that a pseudo three-dimensional reprojected image is obtained.
摘要翻译：由X射线CT扫描仪等断层图像形成单元得到的连续断层图像数据在控制计算机的控制下存储在二维图像存储器中。二维空间滤波处理器，二维仿射变换处理器和二维图像加法处理器连接到控制计算机，执行二维仿射变换，二维图像加法和二维空间滤波图像数据，从而获得伪三维重新投影图像。

37. 发明授权

US07756240B2 X-ray computed tomography apparatus 有权
标题翻译： X射线计算机断层摄影装置
公开(公告)号：US07756240B2
公开(公告)日：2010-07-13
申请号：US11956813
申请日：2007-12-14
申请人： Akihiko Nishide , Makoto Gohno
发明人： Akihiko Nishide , Makoto Gohno
IPC分类号： A61B6/00
CPC分类号： A61B6/405 , A61B6/027 , A61B6/4035 , A61B6/542 , A61B6/583
摘要： The present invention provides an X-ray CT apparatus capable of improving image quality of a dual energy image. The X-ray CT apparatus comprises an X-ray tube for applying X rays having a first energy spectrum and X rays having a second energy spectrum different from the first energy spectrum to a subject, an X-ray data acquisition unit for acquiring X-ray projection data of the first energy spectrum projected onto the subject and X-ray projection data of the second energy spectrum projected thereonto, dual energy image reconstructing unit for image-reconstructing tomographic images indicative of X-ray tube voltage-dependent information at X-ray absorption coefficients related to a distribution of atoms, based on the X-ray projection data of the first energy spectrum and the X-ray projection data of the second energy spectrum, and adjusting unit for adjusting conditions for the image reconstruction in order to optimize the tomographic images indicative of the X-ray tube voltage-dependent information.
摘要翻译：本发明提供能够提高双能量图像的图像质量的X射线CT装置。 X射线CT装置包括：X射线管，用于将具有第一能谱的X射线和具有与第一能谱不同的第二能谱的X射线施加到被检体; X射线数据获取单元，投影到被摄体上的第一能量谱的射线投影数据和投射到其上的第二能量谱的X射线投影数据，双能量图像重建单元，用于将X射线管电压依赖信息的X射线管电压依赖性信息进行图像重建，基于第一能谱的X射线投影数据和第二能谱的X射线投影数据的与原子分布相关的射线吸收系数，以及用于调整图像重建的条件的调整单元，以优化所述断层图像指示所述X射线管电压依赖性信息。

38. 发明申请

US20090122952A1 X-RAY CT APPARATUS 有权
标题翻译： X射线CT装置
公开(公告)号：US20090122952A1
公开(公告)日：2009-05-14
申请号：US12267101
申请日：2008-11-07
申请人： Akihiko Nishide , Kosuke Sasaki , Tetsuya Horiuchi
发明人： Akihiko Nishide , Kosuke Sasaki , Tetsuya Horiuchi
IPC分类号： A61B6/00
CPC分类号： A61B6/466 , A61B6/032 , A61B6/4085 , A61B6/488 , A61B6/542
摘要： The present invention provides an X-ray CT apparatus capable of obtaining each tomographic image indicative of X-ray tube voltage dependent information of a subject with the optimum image quality by less reduced exposure. The X-ray CT apparatus includes device for setting a plurality of X-ray tube voltages and sets imaging conditions used in the photography using the respective X-ray tube voltages in such a manner that respective image noise of tomographic images photographed at the X-ray tube voltages become substantially identical to one another. The setting of the imaging conditions is the setting of X-ray tube currents. The X-ray tube currents are set based on geometrical characteristic amounts of the subject determined from each scout image in such a manner that the respective image noise of the tomographic images photographed at the plurality of X-ray tube voltages become substantially identical to one another.
摘要翻译：本发明提供一种X射线CT装置，其能够通过减少曝光减少获得指示具有最佳图像质量的被摄体的X射线管电压依赖信息的每个断层图像。 X射线CT装置包括用于设置多个X射线管电压的装置，并且使用各X射线管电压设置在摄影中使用的成像条件，使得在X射线管的电压下拍摄的断层图像的各自的图像噪声，射线管电压彼此基本相同。成像条件的设定是X射线管电流的设定。 X射线管电流基于从每个侦察图像确定的被摄体的几何特征量，以使得在多个X射线管电压下拍摄的断层图像的各自图像噪声彼此基本相同的方式来设定。

39. 发明申请

US20090097611A1 X-RAY CT APPARATUS AND METHOD FOR PROCESSING X-RAY PROJECTION DATA 有权
标题翻译： X射线CT设备和处理X射线投影数据的方法
公开(公告)号：US20090097611A1
公开(公告)日：2009-04-16
申请号：US12252095
申请日：2008-10-15
申请人： Akihiko Nishide , Makoto Gohno
发明人： Akihiko Nishide , Makoto Gohno
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/405 , A61B6/482 , A61B6/541 , G06T11/006 , G06T2211/408
摘要： An X-ray CT apparatus includes an X-ray irradiation unit for applying X-rays based on a first X-ray tube voltage and X-rays based on a second X-ray tube voltage to a subject by being switched every one view, a projection data acquisition unit for acquiring projection data by which X-ray tube voltage information about the applied X-rays are identified, and an image reconstruction unit for identifying first energy projection data based on the first X-ray tube voltage, second energy projection data based on the second X-ray tube voltage, and transient energy projection data acquired upon switching between the first and second X-ray tube voltages based on the X-ray tube voltage information, the image reconstruction unit including a conversion processor that converts the transient energy projection data to another data using the transient energy projection data and performs image reconstruction using the data subsequent to the conversion process.
摘要翻译： X射线CT装置包括：X射线照射单元，用于通过每一个视图切换，将X射线基于第一X射线管电压和基于第二X射线管电压的X射线施加到被摄体，投影数据获取单元，用于获取用于识别关于所施加的X射线的X射线管电压信息的投影数据;以及图像重建单元，用于基于第一X射线管电压来识别第一能量投影数据，第二能量投影基于第二X射线管电压的数据和基于X射线管电压信息在第一和第二X射线管电压之间切换时获取的瞬态能量投影数据，所述图像重建单元包括转换处理器，使用瞬态能量投影数据将瞬态能量投影数据转换为另一数据，并使用转换处理之后的数据进行图像重构。

40. 发明申请

US20060291612A1 X-ray CT method and X-ray CT apparatus 审中-公开
标题翻译： X射线CT法和X射线CT装置
公开(公告)号：US20060291612A1
公开(公告)日：2006-12-28
申请号：US11471124
申请日：2006-06-20
申请人： Akihiko Nishide , Yasuhiro Imai
发明人： Akihiko Nishide , Yasuhiro Imai
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , A61B6/469 , A61B6/488
摘要： In an X-ray CT apparatus, radiographic conditions (protocols) for imaging of each position represented by a z-coordinate are optimized in relation to an X-ray cone beam that spreads in a z direction. A slice thickness of a tomographic image is freely controlled in the z direction using a z filter during a conventional scan or a cine scan. For each tomographic image, a reconstruction function, an image filter, a scan field, a tomographic-image tilt angle, and a position of a tomographic image are freely adjusted or independently designated for scanning of each position in the z direction. Thus, a tomographic image is reconstructed. Moreover, the position of a beam formation X-ray filter in the z direction is shifted in order to optimize a patient dose that depends on the size of the scan field, and X-ray quality.
摘要翻译：在X射线CT装置中，针对在z方向上扩展的X射线锥束优化用于由z坐标表示的每个位置的成像的射线照相条件（协议）。在常规扫描或电影扫描期间，使用z滤波器在z方向上自由地控制断层图像的切片厚度。对于每个断层图像，重建功能，图像滤波器，扫描场，断层图像倾斜角度和断层图像的位置被自由地调整或独立地指定用于扫描z方向上的每个位置。因此，重建断层图像。此外，射束形成X射线滤波器在z方向上的位置移动，以优化取决于扫描场的尺寸和X射线质量的患者剂量。

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