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1.发明申请公开(公告)号：US20120087463A1
公开(公告)日：2012-04-12
申请号：US12902291
申请日：2010-10-12
申请人： Lev Greenberg , Daniel Rubin , Baruch Rosner , Galit Naveh , Reuven Levinson , Jerome Stephen Arenson , Shalom Rosenberg
发明人： Lev Greenberg , Daniel Rubin , Baruch Rosner , Galit Naveh , Reuven Levinson , Jerome Stephen Arenson , Shalom Rosenberg
摘要： An imaging system includes an x-ray source, a detector that receives x-rays emitted from the x-ray source, a DAS configured to count photon hits in the detector that occur at photon energies above at least a low keV threshold, a medium keV threshold, and a high keV threshold, and a computer operably coupled to the DAS. The computer is programmed to vary each of the medium keV threshold and the high keV threshold over a continuous keV range during data acquisition to define low, medium, and high keV bins that are based on the low, medium, and high keV thresholds, obtain photon counts in the low, medium, and high keV bins in a plurality of keV threshold combinations, calculate a noise variance as a function of at least one of the keV thresholds, and identify a noise minimum and low, medium, and high keV thresholds that correspond thereto.
摘要翻译： 成像系统包括x射线源，接收从X射线源发射的x射线的检测器，被配置成计数在高于至少低keV阈值的光子能量下发生的检测器中的光子命中的DAS，介质 keV阈值和高keV阈值，以及可操作地耦合到DAS的计算机。 计算机被编程为在数据采集期间在连续keV范围内改变每个介质keV阈值和高keV阈值，以定义基于低，中和高keV阈值的低，中和高keV仓，获得 在多个keV阈值组合中的低，中和高keV仓中的光子计数计算作为keV阈值中的至少一个的函数的噪声方差，并且识别噪声最小和低，中，高keV阈值 对应于此。
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公开(公告)号：US20050002493A1
公开(公告)日：2005-01-06
申请号：US10857230
申请日：2004-06-01
申请人： Reuven Levinson
发明人： Reuven Levinson
CPC分类号： G21K1/025
摘要： The present invention provides a novel anti-scatter device for X-ray imaging with a position encoder-controlled grid motion. Te device comprising an X-ray radiation source, which produces a primary beam that is directed to an examined body; a high voltage generator in communication with said X-ray radiation source; an X-ray detector; a grid positioned within said primary beam between said examined body and said X-ray detector; an actuating means adapted to move said grid; a measuring means; adapted to measure the position of the grid during the X-ray exposure; and a controlling means for synchronizing the grid motion with the X-ray exposure.
摘要翻译： 本发明提供了一种用于具有位置编码器控制的网格运动的用于X射线成像的新型抗散射装置。 Te器件包括X射线辐射源，其产生被引导到检查体的主光束; 与所述X射线辐射源连通的高压发生器; X射线检测器; 位于所述被检体和所述X射线检测器之间的所述主光束内的格栅; 适于移动所述格栅的致动装置; 测量装置; 适于在X射线曝光期间测量电网的位置; 以及用于使格栅运动与X射线曝光同步的控制装置。
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3.发明授权公开(公告)号：US08422636B2
公开(公告)日：2013-04-16
申请号：US12902291
申请日：2010-10-12
申请人： Lev Greenberg , Daniel Rubin , Baruch Rosner , Galit Naveh , Reuven Levinson , Jerome Stephen Arenson , Shalom Rosenberg
发明人： Lev Greenberg , Daniel Rubin , Baruch Rosner , Galit Naveh , Reuven Levinson , Jerome Stephen Arenson , Shalom Rosenberg
IPC分类号： H05G1/64 , G01N23/087
摘要： An imaging system includes an x-ray source, a detector that receives x-rays emitted from the x-ray source, a DAS configured to count photon hits in the detector that occur at photon energies above at least a low keV threshold, a medium keV threshold, and a high keV threshold, and a computer operably coupled to the DAS. The computer is programmed to vary each of the medium keV threshold and the high keV threshold over a continuous keV range during data acquisition to define low, medium, and high keV bins that are based on the low, medium, and high keV thresholds, obtain photon counts in the low, medium, and high keV bins in a plurality of keV threshold combinations, calculate a noise variance as a function of at least one of the keV thresholds, and identify a noise minimum and low, medium, and high keV thresholds that correspond thereto.
摘要翻译： 成像系统包括x射线源，接收从X射线源发射的x射线的检测器，被配置成计数在高于至少低keV阈值的光子能量下发生的检测器中的光子命中的DAS，介质 keV阈值和高keV阈值，以及可操作地耦合到DAS的计算机。 计算机被编程为在数据采集期间在连续keV范围内改变每个介质keV阈值和高keV阈值，以定义基于低，中和高keV阈值的低，中和高keV仓，获得 在多个keV阈值组合中的低，中和高keV仓中的光子计数计算作为keV阈值中的至少一个的函数的噪声方差，并且识别噪声最小和低，中，高keV阈值 对应于此。
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公开(公告)号：US5228069A
公开(公告)日：1993-07-13
申请号：US531053
申请日：1990-05-31
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/4085
摘要： A CT scanner using a rotate-rotate mode wherein the detector is designed to simultaneously detect X-rays that have traversed multiple-planar sections in a patient being scanned.
摘要翻译： 一种使用旋转旋转模式的CT扫描器，其中所述检测器被设计成同时检测已扫描的患者中穿过多个平面部分的X射线。
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公开(公告)号：US5907592A
公开(公告)日：1999-05-25
申请号：US550642
申请日：1995-10-31
申请人： Reuven Levinson
发明人： Reuven Levinson
IPC分类号： H01J35/10
CPC分类号： H01J35/10 , A61B6/027 , H01J2235/086
摘要： A method and apparatus for examining an object by rotating a radiant energy generator around the object while projecting a beam of radiant energy towards the object to impinge the object at a plurality of angles in each of a plurality of planes substantially perpendicular to the z-axis, and detecting radiant energy leaving the object after impinging same, to produce sets of projection measurements representing slices of the object in the planes. During rotation of the radiant energy generator, the radiant energy beam is sequentially modulated between two locations along the z-axis to produce, during each rotation of the generator, two sets of projection measurements representing two slices of the object, which projection measurements are used in an interlaced manner for reconstructing the image of the object.
摘要翻译： 一种用于通过围绕物体旋转辐射能发生器的方法和装置，同时向物体投射一束辐射能量，以在基本上垂直于z轴的多个平面中的每一个中以多个角度冲击物体 并且检测在入射物体之后离开物体的辐射能量，以产生表示物体在平面中的切片的投影测量集合。 在辐射能量发生器的旋转期间，辐射能束在z轴的两个位置之间被顺序地调制，以在发生器的每次旋转期间产生两组投影测量值，这两组投影测量表示物体的两个切片，使用哪些投影测量 以交错方式重建物体的图像。
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公开(公告)号：US5828725A
公开(公告)日：1998-10-27
申请号：US880529
申请日：1997-06-23
申请人： Reuven Levinson
发明人： Reuven Levinson
CPC分类号： G06T5/20 , A61B6/5258
摘要： A method and apparatus for processing images received on an image sensor of rectangular configuration bounded by four outer edges and including a plurality of pixel elements arranged in a rectangular matrix includes the following operations: A. locating an initial rectangular-matrix region consisting of pixel elements determined to be free of an artifact; B. sequentially testing each pixel element along two contiguous outer edges of the image sensor, starting from the initial rectangular-matrix region, to determine whether the pixel value of the tested pixel element is sufficiently large to indicate the probability of an artifact, and for each such pixel element found to have such a pixel value, replacing its pixel value with another having a relation to the pixel value of its closest neighbours found to be free of an artifact, thereby cleaning the respective pixel element; and C. cleaning in a similar manner each of the remaining pixel elements.
摘要翻译： 一种用于处理在由四个外边缘限定并且包括以矩形矩阵排列的多个像素元素的矩形配置的图像传感器上接收的图像的方法和装置包括以下操作：A.定位由像素元素组成的初始矩形区域 决心没有人造物; B.从初始矩形区域开始，沿着图像传感器的两个连续外边缘顺序测试每个像素元素，以确定被测像素元素的像素值是否足够大以指示伪像的概率，并且对于 每个这样的像素元件被发现具有这样的像素值，用与发现没有伪像的最近邻近的像素值具有关系的另一个替换其像素值，从而清洁相应的像素元素; 和C.以相似的方式清洁每个剩余的像素元件。
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公开(公告)号：US5517544A
公开(公告)日：1996-05-14
申请号：US206281
申请日：1994-03-07
申请人： Reuven Levinson
发明人： Reuven Levinson
CPC分类号： G01T1/1642 , G01T1/2985 , Y10S378/901
摘要： A system for reducing afterglow induced artifacts by filtering out afterglow using recursive filters that are tailored to match the intensity and decay time of the scintillating detectors that produce the afterglow.
摘要翻译： 通过使用适于产生余辉的闪烁检测器的强度和衰减时间的递归滤波器滤除余辉来减少余辉引起的伪影的系统。
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