公开(公告)号：US07330609B2

公开(公告)日：2008-02-12

申请号：US10981916

申请日：2004-11-04

申请人： Xueli Wang ,  Xiongwei Yan ,  Wei Ding ,  Makoto Gohno

发明人： Xueli Wang ,  Xiongwei Yan ,  Wei Ding ,  Makoto Gohno

IPC分类号： G06K9/56 ,  H01L27/146

CPC分类号： G01M11/0292 ,  G06T7/66 ,  G06T7/70

摘要： A method of measuring a modulation transfer function (MTF) includes detecting the center of a line spread function (LSF) image in order to calculate an MTF. For this purpose, an enlarged image of a portion of an image containing the LSF image is created, and binary-coded based on a threshold. A morphological operation is performed on the binary-coded image. Coordinates representing points that define the contour of the resultant image are sampled, and used to work out coordinates representing the center of a circle through Hough transform. The coordinates representing the center are transformed into coordinates representing a point in an original image.

摘要翻译： 测量调制传递函数（MTF）的方法包括检测线扩展函数（LSF）图像的中心，以便计算MTF。 为此，创建包含LSF图像的图像的一部分的放大图像，并且基于阈值进行二进制编码。 对二进制编码图像进行形态学操作。 对表示定义所得图像轮廓的点的坐标进行采样，并用于通过霍夫变换求出表示圆心的坐标。 表示中心的坐标被转换为表示原始图像中的点的坐标。

公开(公告)号：US08340384B2

公开(公告)日：2012-12-25

申请号：US12304431

申请日：2006-06-13

申请人： Xueli Wang ,  Qi Zhao

发明人： Xueli Wang ,  Qi Zhao

IPC分类号： G06K9/00

CPC分类号： G06T7/0012 ,  A61B6/03 ,  A61B6/501 ,  G06T7/11 ,  G06T2207/10081 ,  G06T2207/30016

摘要： An apparatus for segmenting a cerebral hemorrhage site in a medical image of a head comprises a means for segmenting an internal region of a skull bone in the medical image of the head, a means for segmenting a possible region in which a cerebral hemorrhage site is contained, out of the region segmented by the means for segmenting the internal region of the skull bone, and a means for determining a cerebral hemorrhage site out of the region segmented by the means for segmenting the possible region in which the cerebral hemorrhage site is contained.

摘要翻译： 用于分割头部医学图像中的脑出血部位的装置包括用于分割头部的医学图像中的颅骨的内部区域的装置，用于分割其中包含脑出血部位的可能区域的装置 在通过用于分割颅骨的内部区域的手段分割的区域之外，以及用于确定通过用于分割包含脑出血部位的可能区域的手段分割的区域之外的脑出血部位的手段。

公开(公告)号：US07558365B2

公开(公告)日：2009-07-07

申请号：US12143569

申请日：2008-06-20

申请人： Xueli Wang

发明人： Xueli Wang

IPC分类号： G01N23/00

CPC分类号： A61B6/032 ,  A61B6/465 ,  A61B6/488 ,  A61B6/542 ,  A61B6/544

摘要： Method of operating an X-ray CT apparatus and the corresponding apparatus and system thereof. A method includes analyzing scout scan data to obtain a position with a minimum noise index and a position with a maximum noise index, calculating noise indexes at the two positions in a range of a maximum and a minimum tube current that can be provided by the system by means of a tube current control model so as to obtain two ranges of noise index, and determining whether there is an intersection between the two ranges of noise index. If such an intersection exists, a combination of the range of tube current value and the range of noise index that meets the requirement is selected within the intersection to control the system to proceed with a subsequent scan. If no such intersection exists, the system ends the present scan.

摘要翻译： 操作X射线CT装置的方法及其相应的装置和系统。 一种方法包括分析侦察扫描数据以获得具有最小噪声指数的位置和具有最大噪声指数的位置，计算在系统可提供的最大和最小管电流的范围内的两个位置处的噪声指数 通过管电流控制模型，以获得两个噪声指数范围，并确定两个噪声指数范围之间是否存在交点。 如果存在这种交点，则在交叉口内选择满足要求的管电流值范围和噪声指数范围的组合，以控制系统进行后续扫描。 如果不存在这样的交集，系统将结束当前的扫描。

公开(公告)号：US20090016484A1

公开(公告)日：2009-01-15

申请号：US12143569

申请日：2008-06-20

申请人： Xueli Wang

发明人： Xueli Wang

IPC分类号： A61B6/00

CPC分类号： A61B6/032 ,  A61B6/465 ,  A61B6/488 ,  A61B6/542 ,  A61B6/544

摘要： Method of operating an X-ray CT apparatus and the corresponding apparatus and system thereof. A method includes analyzing scout scan data to obtain a position with a minimum noise index and a position with a maximum noise index, calculating noise indexes at the two positions in a range of a maximum and a minimum tube current that can be provided by the system by means of a tube current control model so as to obtain two ranges of noise index, and determining whether there is an intersection between the two ranges of noise index. If such an intersection exists, a combination of the range of tube current value and the range of noise index that meets the requirement is selected within the intersection to control the system to proceed with a subsequent scan. If no such intersection exists, the system ends the present scan.

摘要翻译： 操作X射线CT装置的方法及其相应的装置和系统。 一种方法包括分析侦察扫描数据以获得具有最小噪声指数的位置和具有最大噪声指数的位置，在可由系统提供的最大和最小管电流的范围内计算两个位置处的噪声指数 通过管电流控制模型，以获得两个噪声指数范围，并确定两个噪声指数范围之间是否存在交点。 如果存在这种交点，则在交叉口内选择满足要求的管电流值范围和噪声指数范围的组合，以控制系统进行后续扫描。 如果不存在这样的交集，系统将结束当前的扫描。

公开(公告)号：US20100040271A1

公开(公告)日：2010-02-18

申请号：US12304431

申请日：2006-06-13

申请人： Qi Zhao ,  Xueli Wang

发明人： Qi Zhao ,  Xueli Wang

IPC分类号： G06K9/34 ,  G06T7/00

CPC分类号： G06T7/0012 ,  A61B6/03 ,  A61B6/501 ,  G06T7/11 ,  G06T2207/10081 ,  G06T2207/30016

摘要： An apparatus for segmenting a cerebral hemorrhage site in a medical image of a head comprises a means for segmenting an internal region of a skull bone in the medical image of the head, a means for segmenting a possible region in which a cerebral hemorrhage site is contained, out of the region segmented by the means for segmenting the internal region of the skull bone, and a means for determining a cerebral hemorrhage site out of the region segmented by the means for segmenting the possible region in which the cerebral hemorrhage site is contained.

摘要翻译： 用于分割头部医学图像中的脑出血部位的装置包括用于分割头部的医学图像中的颅骨的内部区域的装置，用于分割其中包含脑出血部位的可能区域的手段 在通过用于分割颅骨的内部区域的手段分割的区域之外，以及用于确定通过用于分割包含脑出血部位的可能区域的手段分割的区域之外的脑出血部位的手段。

公开(公告)号：US20080013674A1

公开(公告)日：2008-01-17

申请号：US11777656

申请日：2007-07-13

申请人： Xiaoyan Zhang ,  Xuguang Sun ,  Xueli Wang ,  Zhe Shen

发明人： Xiaoyan Zhang ,  Xuguang Sun ,  Xueli Wang ,  Zhe Shen

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： A61B6/4441 ,  A61B6/032 ,  A61B6/0457 ,  A61B6/4021 ,  A61B6/4417 ,  A61B6/4476 ,  A61B6/541 ,  A61B6/587 ,  H05G1/36

摘要： An X-ray hybrid diagnosis system includes a single power supply, an X-ray radiography unit, an X-ray CT unit, and a single control console. The single power supply powers X-ray CR system having first X-ray tube and X-ray CT system having second X-ray tube. The X-ray radiography unit irradiates a subject with X-rays from first X-ray tube to obtain an X-ray radiographic image. The X-ray CT unit irradiates the subject with X-rays from the second X-ray tube and acquires projection data from a beam of the X-rays that has passed through the subject, to reconstruct an image using the acquired projection data, and to obtain a tomographic image. The single control console controls the X-ray radiography unit and the X-ray CT unit.

摘要翻译： X射线混合诊断系统包括单个电源，X射线摄影单元，X射线CT单元和单个控制台。 单电源为具有第一X射线管的X射线CR系统和具有第二X射线管的X射线CT系统供电。 X射线摄影单元从第一X射线管向X射线照射被检体，得到X射线摄影图像。 X射线CT单元从第二X射线管照射被检体的X射线，并且从已经穿过被检体的X射线的光束获取投影数据，使用获取的投影数据重建图像，以及 以获得断层图像。 单个控制台控制X射线摄影单元和X射线CT单元。

公开(公告)号：US20070211844A1

公开(公告)日：2007-09-13

申请号：US11531929

申请日：2006-09-14

申请人： Yilun Shi ,  Xueli Wang

发明人： Yilun Shi ,  Xueli Wang

IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC分类号： A61B6/032 ,  A61B6/469 ,  G06F19/00 ,  G06F19/321 ,  G16H40/63

摘要： With a view to providing a radiographing plan assisting method which can easily prepare a radiographing plan by utilizing a user interface, it is made possible to select an anatomical region through a user interface, select through a user interface an anatomical area belonging to the selected anatomical region, select a radiographing protocol for the selected anatomical area through a user interface, and select a feature of the selected radiographing protocol through a user interface.

摘要翻译： 为了提供可以通过利用用户界面容易地准备放射照相计划的放射照片计划辅助方法，可以通过用户界面选择解剖区域，通过用户界面选择属于所选择的解剖学的解剖区域 区域，通过用户界面为所选择的解剖区域选择放射照相协议，并通过用户界面选择所选择的放射照相协议的特征。

公开(公告)号：US20070098241A1

公开(公告)日：2007-05-03

申请号：US11552656

申请日：2006-10-25

申请人： Xueli Wang ,  Akihiko Nishide ,  Akira Hagiwara ,  Kotoko Morikawa

发明人： Xueli Wang ,  Akihiko Nishide ,  Akira Hagiwara ,  Kotoko Morikawa

IPC分类号： G06K9/00

CPC分类号： G06T11/008 ,  A61B6/027

摘要： The present invention is intended to improve the quality of a three-dimensional display image, an MPR display image, or an MIP display image presented by an X-ray CT system that performs a conventional (axial) scan, a cine scan, or a helical scan. The X-ray CT system includes an image reconstruction unit or an image display unit. The image reconstruction unit or image display unit measures deviations of tomographic images in an x direction that is a horizontal direction and deviations thereof in a y direction that is a vertical direction according to the continuity in a z direction of an object that exhibits high CT numbers and that is visualized as a reference in the tomographic images; such as, a cradle, a head holder, the surface of a subject's body, or a bone. The image reconstruction unit or image display unit then compensates the deviations.

摘要翻译： 本发明旨在提高由执行常规（轴向）扫描，电影扫描或电视扫描的X射线CT系统呈现的三维显示图像，MPR显示图像或MIP显示图像的质量。 螺旋扫描。 X射线CT系统包括图像重建单元或图像显示单元。 图像重建单元或图像显示单元根据呈现高CT数的物体的az方向的连续性来测量作为水平方向的x方向的断层图像和作为垂直方向的y方向的偏离的断层图像的偏差， 在断层图像中可视化为参考; 例如摇篮，头部保持器，被检体的表面或骨骼。 然后，图像重建单元或图像显示单元补偿偏差。

公开(公告)号：US20120148013A1

公开(公告)日：2012-06-14

申请号：US13315090

申请日：2011-12-08

申请人： Xiaoyan Zhang ,  Hailiang Liu ,  Zhuo Liu ,  Xuyong Yang ,  Xueli Wang

发明人： Xiaoyan Zhang ,  Hailiang Liu ,  Zhuo Liu ,  Xuyong Yang ,  Xueli Wang

IPC分类号： H05G1/02 ,  F16C13/06 ,  A61B6/03

CPC分类号： A61B6/4435 ,  A61B6/03 ,  A61B6/44 ,  A61B6/4447 ,  F16C13/04 ,  F16C19/507 ,  F16C2300/14 ,  F16C2316/10

摘要： A self adjusting bearing for use on a CT gantry is provided. The self adjusting bearing is configured to be mounted on a main frame of the CT gantry and is configured to support a rotating base of the CT gantry wherein the self adjusting bearing includes a roller, a first component, and a second component, the roller is configured to support the rotating base and is rotatably mounted on the first component, the second component is configured to be mounted on the main frame, and the first component and the second component are configured to rotatably engage each other such that they can rotate relative to each other during the mounting of the self adjusting bearing.

摘要翻译： 提供了一种用于CT龙门架的自调节轴承。 所述自调节轴承被配置为安装在所述CT机架的主框架上，并且被配置为支撑所述CT机架的旋转底座，其中所述自调节轴承包括辊，第一部件和第二部件，所述辊是 被配置为支撑所述旋转底座并且可旋转地安装在所述第一部件上，所述第二部件构造成安装在所述主框架上，并且所述第一部件和所述第二部件被构造成可旋转地彼此接合，使得它们可相对于 在安装自调节轴承期间彼此相对。

公开(公告)号：US07978895B2

公开(公告)日：2011-07-12

申请号：US11552656

申请日：2006-10-25

申请人： Xueli Wang ,  Akihiko Nishide ,  Akira Hagiwara ,  Kotoko Morikawa

发明人： Xueli Wang ,  Akihiko Nishide ,  Akira Hagiwara ,  Kotoko Morikawa

IPC分类号： G06K9/00 ,  A61B5/05 ,  A61B8/00

CPC分类号： G06T11/008 ,  A61B6/027

摘要： The present invention is intended to improve the quality of a three-dimensional display image, an MPR display image, or an MIP display image presented by an X-ray CT system that performs a conventional (axial) scan, a cine scan, or a helical scan. The X-ray CT system includes an image reconstruction unit or an image display unit. The image reconstruction unit or image display unit measures deviations of tomographic images in an x direction that is a horizontal direction and deviations thereof in a y direction that is a vertical direction according to the continuity in a z direction of an object that exhibits high CT numbers and that is visualized as a reference in the tomographic images; such as, a cradle, a head holder, the surface of a subject's body, or a bone. The image reconstruction unit or image display unit then compensates the deviations.

摘要翻译： 本发明旨在提高由执行常规（轴向）扫描，电影扫描或电视扫描的X射线CT系统呈现的三维显示图像，MPR显示图像或MIP显示图像的质量。 螺旋扫描。 X射线CT系统包括图像重建单元或图像显示单元。 图像重建单元或图像显示单元根据呈现高CT数的物体的az方向的连续性来测量作为水平方向的x方向的断层图像和作为垂直方向的y方向的偏离的断层图像的偏差， 在断层图像中可视化为参考; 例如摇篮，头部保持器，被检体的表面或骨骼。 然后，图像重建单元或图像显示单元补偿偏差。