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21. 发明授权

US06243438B1 Multi-slice detector array 失效
标题翻译：多层检测器阵列
公开(公告)号：US06243438B1
公开(公告)日：2001-06-05
申请号：US09242079
申请日：1999-02-04
申请人： Ehud Nahaliel , Ehud Dafni , Andre Feldman , David Ruimi , David Freundlich
发明人： Ehud Nahaliel , Ehud Dafni , Andre Feldman , David Ruimi , David Freundlich
IPC分类号： G01N2300
CPC分类号： A61B6/032 , A61B6/4085 , A61B6/5205 , G01N23/04 , G01T1/1647 , G01T1/2985
摘要： Apparatus for producing multiple image slice data responsive to incident radiation passing through an object. The apparatus includes a detector array having a plurality (p) of parallel rows of detector elements which receive such incident radiation and generate signals therefrom, each of which rows is characterized by a width measured prior to collimation in the direction perpendicular to a long dimension thereof; and signal processing circuitry which receives signals from the detector elements and which combines the signals in a first combination mode and in at least m additional combination modes. In the first combination mode, the circuitry forms a set of n groups of rows, each such group of rows having an effective group width substantially equal to the effective group width of each of the other groups in the set. In each of the m additional combination modes, the circuitry forms different sets of n groups of rows, each such set having a different effective group width common to all groups in the set.
摘要翻译：用于响应于穿过物体的入射辐射产生多个图像切片数据的装置。该装置包括具有多个（p）并行的检测器元件的检测器阵列的检测器阵列，其接收这种入射辐射并从其产生信号，其中每行的特征在于在垂直于其长尺寸的方向准直之前测量的宽度 ; 以及信号处理电路，其从检测器元件接收信号，并且以第一组合模式和至少m个附加组合模式组合信号。在第一组合模式中，电路形成一组n组行，每组这样的行具有基本上等于组中每个其他组的有效组宽度的有效组宽度。在m个附加组合模式中的每一个中，电路形成n组行的不同集合，每个这样的集合具有集合中所有组共同的不同的有效组宽度。

22. 发明授权

US06178220B1 CT systems with oblique image planes 失效
标题翻译：具有倾斜图像平面的CT系统
公开(公告)号：US06178220B1
公开(公告)日：2001-01-23
申请号：US09319062
申请日：1999-10-18
申请人： David Freundlich , Alex Zaslavsky , David Ruimi
发明人： David Freundlich , Alex Zaslavsky , David Ruimi
IPC分类号： A61B603
CPC分类号： G06T11/003 , A61B6/027
摘要： A method for reconstructing one or more non-axial image slices in a CT scanner, comprising: acquiring X-ray attenuation data over an axial range; and processing the attenuation data to determine CT values at a plurality of points along one or more surface corresponding respectively to each one or more non-axial image slices, wherein processing the attenuation data comprises back-projecting the data directly to the plurality of points along each of the one or more surfaces.
摘要翻译：一种用于重构CT扫描器中的一个或多个非轴向图像切片的方法，包括：在轴向范围上获取X射线衰减数据; 以及处理所述衰减数据以确定沿着分别对应于每个一个或多个非轴向图像切片的一个或多个表面的多个点处的CT值，其中处理所述衰减数据包括将所述数据直接反向投影到所述多个点每个一个或多个表面。

23. 发明授权

US08571172B2 CT cone beam scanner 有权
标题翻译： CT锥形束扫描仪
公开(公告)号：US08571172B2
公开(公告)日：2013-10-29
申请号：US12937290
申请日：2009-04-06
申请人： Ehud Dafni , Rafi Brada , David Ruimi
发明人： Ehud Dafni , Rafi Brada , David Ruimi
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4028
摘要： A CT scanner comprises at least one cone beam x-ray source assembly mounted on a gantry frame, the gantry frame rotatable about a rotation axis, the x-ray source assembly operable to emit a cone beam at an orientation with respect to the rotation axis, and a controller operable to adjust an orientation of the cone beam during a rotation cycle of the gantry, wherein the controller adjusts the orientation to radiate a substantially same volume of interest over the rotation cycle.
摘要翻译： CT扫描器包括安装在台架框架上的至少一个锥形束x射线源组件，所述台架可围绕旋转轴线旋转，所述X射线源组件可操作以相对于旋转轴线的取向发射锥形束以及控制器，其可操作以在所述台架的旋转周期期间调节所述锥形梁的取向，其中所述控制器调整所述取向以在所述旋转周期上辐射基本相同的感兴趣体积。

24. 发明授权

US6118839A Multiple slice CT scanner 失效
标题翻译：多层CT扫描仪
公开(公告)号：US6118839A
公开(公告)日：2000-09-12
申请号：US556824
申请日：1995-11-02
申请人： Ehud Dafni , David Ruimi
发明人： Ehud Dafni , David Ruimi
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4014 , A61B6/4028 , A61B6/4085 , Y10S378/901
摘要： A computerized tomography system wherein the X-ray source rotates about the subject and moves axially relative to the subject to provide a helical scan. A detector array includes a plurality of rows of detector elements extending axially and each element being of the same size to enable the acquisition of multiple planar data per rotation. The acquired data is reformatted into planar data by interpolating as a function of both the axial subject position and the axial detector element position.
摘要翻译：一种计算机断层摄影系统，其中X射线源围绕被摄体旋转并相对于被摄体轴向移动以提供螺旋扫描。检测器阵列包括多个沿轴向延伸的检测器元件行，并且每个元件具有相同的尺寸，以使得能够每旋转获取多个平面数据。所获取的数据通过内插作为轴向对象位置和轴向检测器元件位置的函数被重新格式化为平面数据。

25. 发明申请

US20140037045A1 DUAL ENERGY CT SCANNER 审中-公开
标题翻译：双能CT扫描仪
公开(公告)号：US20140037045A1
公开(公告)日：2014-02-06
申请号：US14110459
申请日：2012-04-04
申请人： Ehud Dafni , David Ruimi , Olga Shapiro
发明人： Ehud Dafni , David Ruimi , Olga Shapiro
IPC分类号： G01T1/16 , G01N23/04
CPC分类号： G01T1/16 , A61B6/032 , A61B6/4233 , A61B6/4241 , A61B6/5205 , G01N23/046 , G01N2223/419 , G01T1/2985
摘要： A dual energy CT scanner includes an X ray source generating an X-ray beam, a stacked detector array for detecting radiation from the X-ray beam, the stacked detector array including a first layer of detectors and a second layer of detectors, wherein a packing density of detectors in at least a portion of the first layer is different than a packing density of detectors in a corresponding portion of the second layer, a data acquisition unit for sampling data from the detectors in the first and second layer; and an image reconstruction unit for reconstructing an image from data acquired from at least one layer of the stacked detector array.
摘要翻译：双能量CT扫描器包括产生X射线束的X射线源，用于检测来自X射线束的辐射的堆叠检测器阵列，堆叠的检测器阵列包括第一层检测器和第二层检测器，其中a 在第一层的至少一部分中的检测器的堆积密度不同于第二层的相应部分中的检测器的堆积密度，数据获取单元，用于从第一层和第二层中的检测器采样数据; 以及图像重建单元，用于根据从堆叠的检测器阵列的至少一层获取的数据重构图像。

26. 发明申请

US20110033024A1 CT CONE BEAM SCANNER 有权
标题翻译： CT CONE光束扫描仪
公开(公告)号：US20110033024A1
公开(公告)日：2011-02-10
申请号：US12937290
申请日：2009-04-06
申请人： Ehud Dafni , Rafi Brada , David Ruimi
发明人： Ehud Dafni , Rafi Brada , David Ruimi
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4028
摘要： A CT scanner comprises at least one cone beam x-ray source assembly mounted on a gantry frame, the gantry frame rotatable about a rotation axis, the x-ray source assembly operable to emit a cone beam at an orientation with respect to the rotation axis, and a controller operable to adjust an orientation of the cone beam during a rotation cycle of the gantry, wherein the controller adjusts the orientation to radiate a substantially same volume of interest over the rotation cycle.
摘要翻译： CT扫描器包括安装在台架框架上的至少一个锥形束x射线源组件，所述台架可围绕旋转轴线旋转，所述X射线源组件可操作以相对于旋转轴线的取向发射锥形束以及控制器，其可操作以在所述台架的旋转周期期间调节所述锥形梁的取向，其中所述控制器调整所述取向以在所述旋转周期上辐射基本相同的感兴趣体积。

27. 发明授权

US07016453B2 Interventional computerized tomography system with reduced physician exposure 有权
标题翻译：干预性计算机断层扫描系统，减少了医生的暴露
公开(公告)号：US07016453B2
公开(公告)日：2006-03-21
申请号：US10399242
申请日：2001-01-18
申请人： David Ruimi
发明人： David Ruimi
IPC分类号： A61B5/05
CPC分类号： A61B6/032 , A61B6/10
摘要： A CT system for use in interventional procedures on a patient (20) supported by a support surface (24). The system includes a normal mode in which a patient is irradiated over an angle including irradiation from a general direction above the support surface, and a reduced angle irradiation mode in which the patient is irradiated only from an angle at which a physician is indicated as not being present or is assumed not to be present.
摘要翻译：一种用于在由支撑表面（24）支撑的患者（20）上的介入手术中的CT系统。该系统包括正常模式，其中患者照射包括从支撑表面上方的大致方向的照射的角度，以及减小角度照射模式，其中仅从医生被指示为不是的角度照射患者存在或假定不存在。

28. 发明授权

US08873703B2 X ray imaging system with scatter radiation correction and method of using same 有权
标题翻译：具有散射辐射校正的X射线成像系统及其使用方法
公开(公告)号：US08873703B2
公开(公告)日：2014-10-28
申请号：US12991676
申请日：2009-05-07
申请人： David Ruimi , Olga Shapiro , Ehud Dafni
发明人： David Ruimi , Olga Shapiro , Ehud Dafni
IPC分类号： A61B6/03 , G01T1/29 , A61B6/00
CPC分类号： G01T1/2985 , A61B6/032 , A61B6/4028 , A61B6/4291 , A61B6/508 , A61B6/5282
摘要： A CT scanner with scatter correction device and a method for scatter correction are provided. The method comprises positioning shields for shielding some of the CT detector elements from direct X ray radiation, while allowing scattered radiation to arrive at said shielded elements; measuring scatter signals from said shielded elements, indicative of scattered radiation intensity; and correcting for scatter by subtracting scatter intensity values estimated from said measured scatter signals from signals measured by unshielded detector elements.
摘要翻译：提供了具有散射校正装置的CT扫描器和用于散射校正的方法。该方法包括定位用于屏蔽一些CT检测器元件的屏蔽件以避免直接的X射线辐射，同时允许散射的辐射到达所述屏蔽元件; 测量来自所述屏蔽元件的散射信号，指示散射辐射强度; 以及通过从由非屏蔽检测器元件测量的信号中减去从所述测量的散射信号估计的散射强度值来校正散射。

29. 发明授权

US08102963B2 CT scanner using injected contrast agent and method of use 有权
标题翻译： CT扫描仪采用注射造影剂及使用方法
公开(公告)号：US08102963B2
公开(公告)日：2012-01-24
申请号：US12418678
申请日：2009-04-06
申请人： Olga Shapiro , David Ruimi , Rafi Brada , Ehud Dafni
发明人： Olga Shapiro , David Ruimi , Rafi Brada , Ehud Dafni
IPC分类号： A61B6/00
CPC分类号： A61B6/504 , A61B6/027 , A61B6/032 , A61B6/06 , A61B6/4014 , A61B6/4028 , A61B6/481 , A61B6/507
摘要： A CT scanner includes a first X-ray beam source, and a second X-ray beam source. With such an apparatus, first source is used to monitor buildup of an injected contrast agent in a selected region of interest relative to a patient and at least the second source is used to perform diagnostic scanning when the buildup of the contrast agent reaches a desired level.
摘要翻译： CT扫描器包括第一X射线束源和第二X射线束源。使用这样的装置，第一来源用于监测相对于患者的所选择的感兴趣区域中注射的造影剂的累积，并且当造影剂的累积达到期望水平时，至少第二源用于执行诊断扫描。

30. 发明授权

US08077826B2 CT scanner with scatter radiation correction and method of using same 有权
标题翻译：具有散射辐射校正的CT扫描仪及其使用方法
公开(公告)号：US08077826B2
公开(公告)日：2011-12-13
申请号：US12480079
申请日：2009-06-08
申请人： David Ruimi , Olga Shapiro , Ehud Dafni
发明人： David Ruimi , Olga Shapiro , Ehud Dafni
IPC分类号： G01N23/00
CPC分类号： H04N5/32 , A61B6/032 , A61B6/4014 , A61B6/4028 , A61B6/4085 , A61B6/4266 , A61B6/4291 , A61B6/5282 , G01T1/2985
摘要： A CT scanner with scatter correction device and a method for scatter correction are provided. The method of correcting CT images from artifacts caused by scattered radiation comprises affixing to the non-rotating frame of the CT gantry a plurality of shields for shielding some of the CT detector elements from direct X ray radiation, while allowing scattered radiation to arrive at said shielded elements; measuring scatter signals from said shielded elements, indicative of scattered radiation intensity; and correcting for scatter by subtracting scatter intensity values estimated from said measured scatter signals from signals measured by unshielded detector elements.
摘要翻译：提供了具有散射校正装置的CT扫描器和用于散射校正的方法。由散射辐射引起的伪像校正CT图像的方法包括：将CT扫描架的非旋转帧固定在多个屏蔽件上，用于屏蔽一些CT检测器元件与直接X射线辐射，同时允许散射辐射到达所述屏蔽元件; 测量来自所述屏蔽元件的散射信号，指示散射辐射强度; 以及通过从由非屏蔽检测器元件测量的信号中减去从所述测量的散射信号估计的散射强度值来校正散射。

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