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1. 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。

2. 发明授权

US08537965B2 Cone-beam CT 有权
标题翻译：锥束CT
公开(公告)号：US08537965B2
公开(公告)日：2013-09-17
申请号：US12965968
申请日：2010-12-13
申请人： Ehud Dafni
发明人： Ehud Dafni
IPC分类号： G01N23/00
CPC分类号： A61B6/4085 , A61B6/032 , A61B6/4007 , A61B6/4014 , A61B6/4028 , A61B6/4291 , H01J35/045 , H05G1/70
摘要： An X-ray source system for a CT scanner includes a plurality of X-ray sources, wherein each X-ray source of the plurality is provided with a cathode from which an electron beam is emitted, an anode to receive the electron beam and at least one grid electrode, wherein the grid electrodes are configured to selectably block radiation from said X-ray sources; a high voltage generator for applying voltage to the plurality of X-ray sources, wherein each of the plurality of X-ray sources are configured to present substantially the same load to the high voltage generator; a grid modulator configured to apply voltage to grid electrodes of each of the plurality of X-ray sources in turn; and a controller for controlling the grid modulator so that only one of the plurality of X-ray sources emits radiation at any one time.
摘要翻译：用于CT扫描仪的X射线源系统包括多个X射线源，其中，多个X射线源中的每个X射线源设置有阴极，从该阴极发射电子束，接收电子束的阳极和至少一个栅电极，其中所述栅电极被配置为可选择地阻挡来自所述X射线源的辐射; 用于向所述多个X射线源施加电压的高电压发生器，其中，所述多个X射线源中的每一个被配置为向所述高压发生器施加大致相同的负载; 电网调制器，其被配置为依次将电压施加到所述多个X射线源中的每一个的栅电极; 以及控制器，用于控制所述电网调制器，使得所述多个X射线源中的仅一个在任何一个时间发射辐射。

3. 发明授权

US08451972B2 Methods, circuits, devices, apparatus, assemblies and systems for computer tomography 有权
标题翻译：用于计算机断层扫描的方法，电路，装置，装置，组件和系统
公开(公告)号：US08451972B2
公开(公告)日：2013-05-28
申请号：US12910786
申请日：2010-10-23
申请人： Ehud Dafni
发明人： Ehud Dafni
IPC分类号： G01N23/00
CPC分类号： A61B6/06 , A61B6/027 , A61B6/032 , A61B6/4021 , A61B6/4028 , A61B6/4452 , A61B6/486 , A61B6/503 , A61B6/541
摘要： Disclosed are methods, circuits, devices, assemblies and systems for performing Computer Tomography (CT)—for example of a periodically moving object such as a heart. According to some embodiments, there is provided a Computer Tomography scanner which includes an x-ray source adapted to generate an x-ray scan beam and a electromechanical assembly to which the x-ray source is mounted. The assembly may be adapted to move one or more electromechanical elements such that the scan beam is moved around the periodically moving object with a velocity profile having both constant and cyclically alternating rotational velocity components, and wherein the cyclically alternating velocity components are synchronized with the periodic motion of the object.
摘要翻译：公开了用于执行计算机断层扫描（CT）的方法，电路，装置，组件和系统 - 例如周期性移动的物体（例如心脏）。根据一些实施例，提供了一种计算机断层摄影扫描器，其包括适于产生x射线扫描束的x射线源和安装x射线源的机电组件。组件可以适于移动一个或多个机电元件，使得扫描光束以周期性移动的物体移动，速度分布具有恒定和循环交替的旋转速度分量，并且其中循环交替的速度分量与周期性的物体的运动。

4. 发明申请

US20120106696A1 GRADED RESOLUTION FIELD OF VIEW CT SCANNER 有权
标题翻译：分级分辨率视野CT扫描仪
公开(公告)号：US20120106696A1
公开(公告)日：2012-05-03
申请号：US13342040
申请日：2012-01-01
申请人： Ehud DAFNI
发明人： Ehud DAFNI
IPC分类号： A61B6/03
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4208 , A61B6/4233 , G01N2223/419 , G01N2223/612 , G01T1/24 , G01T1/249 , G01T1/2985
摘要： A CT scanner comprising: a rotor rotatable about an axis of rotation: an X-ray source mounted to the rotor having a focal spot from which an X-ray beam emanates; an X-ray detector array comprising a plurality of X-ray detectors for detecting X-rays in the X-ray beam; wherein the detector array has at least one high resolution region in which detectors have a high packing density and at least one low resolution region in which detectors have a low packing density and are separated by X-ray insensitive regions substantially larger than insensitive regions resulting from septa between detectors that function to reduce detector cross talk.
摘要翻译：一种CT扫描仪，包括：可围绕旋转轴线旋转的转子：安装到所述转子上的X射线源具有发出X射线束的焦点; X射线检测器阵列，包括用于检测X射线束中的X射线的多个X射线检测器; 其中所述检测器阵列具有至少一个高分辨率区域，其中检测器具有高的堆积密度和至少一个低分辨率区域，其中检测器具有低的堆积密度，并且由不受敏感区域的X射线不敏感区域分离，检测器之间的隔垫功能可以减少检测器串扰。

5. 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。

6. 发明授权

US07769138B2 Apparatus and method of improved angiographic imaging 有权
标题翻译：改进血管造影成像的装置和方法
公开(公告)号：US07769138B2
公开(公告)日：2010-08-03
申请号：US10599279
申请日：2004-03-29
申请人： Ehud Dafni
发明人： Ehud Dafni
IPC分类号： H05G1/64
CPC分类号： A61B6/482 , A61B6/4035 , A61B6/4092 , A61B6/4233 , A61B6/4241 , A61B6/4441 , A61B6/481 , A61B6/503 , A61B6/504
摘要： The x-ray tube is energized (12) and the myocardium is imaged (16) while contrast agent is infused to the coronary arteries of the subject (14). Single photon counting data acquired with the detector while two thresholds are set to form simultaneously low energy images and high energy images (16). The images are processed (18) and displayed (20).
摘要翻译：（12），并将心肌成像（16），同时将造影剂注入受试者的冠状动脉（14）。单个光子计数数据由检测器采集，同时设置两个阈值同时形成低能量图像和高能量图像（16）。图像被处理（18）并显示（20）。

7. 发明申请

US20100020935A1 X-RAY TUBE 有权
标题翻译： X射线管
公开(公告)号：US20100020935A1
公开(公告)日：2010-01-28
申请号：US12574795
申请日：2009-10-07
申请人： Ehud DAFNI
发明人： Ehud DAFNI
IPC分类号： H01J35/08
CPC分类号： H01J35/04 , A61B6/032 , A61B6/4014 , A61B6/4021 , A61B6/4028 , A61B6/4085 , A61B6/4291 , A61B6/541 , H01J35/14 , H01J35/24 , H01J2235/068 , H01J2235/086
摘要： An X-ray tube system comprising: at least one filament adapted to produce two electron beams when electrified; at least two anodes spaced from each other along a first direction that each comprises a face that receives an electron beams from the at least one filament at a focal point and produces x-ray cone beams responsive thereto, the x-ray beams being directed in a same direction perpendicular to the first direction; a collimator that collimates the cone beams such that the beams are asymmetric, with the side of each beam distal from the other beam having a smaller beam angle than the side proximal to the other beam.
摘要翻译：一种X射线管系统，包括：至少一根灯丝，其适于在通电时产生两束电子束; 至少两个阳极沿着第一方向彼此间隔开，每个阳极包括在焦点处接收来自所述至少一个灯丝的电子束的面并产生响应于此的X射线锥形束，所述x射线束被引导到垂直于第一方向的相同方向; 准直器，其使锥形光束准直，使得光束是不对称的，每个光束远离另一个光束的侧面具有比靠近另一个光束的一侧更小的光束角。

8. 发明授权

US06400789B1 On-line image reconstruction in helical CT scanners 失效
标题翻译：螺旋CT扫描仪在线图像重建
公开(公告)号：US06400789B1
公开(公告)日：2002-06-04
申请号：US09367769
申请日：2000-01-19
申请人： Ehud Dafni
发明人： Ehud Dafni
IPC分类号： A61B600
CPC分类号： A61B6/032 , A61B6/027 , Y10S128/922
摘要： A method for reconstructuring a planar image slice in a CT scanner having a predetermined reconstrunction angle and including a detector array having n rows, n being an integer greater than 1, said method comprising: acquiring X-ray attentuation data from the detector array along a predetermined portion of a helical scan path in the vicinity of an axial position corresponding to the planar image slice, wherein the predetermined portion has an angular extent that is generally equal to the reconstruction angle; and processing the data to reconstruct an image of the slice, using data acquired substantially only along the predetermined portion of the scan path.
摘要翻译：一种重建具有预定重合角的CT扫描器中的平面图像切片的方法，包括具有n行的检测器阵列，n是大于1的整数，所述方法包括：沿着检测器阵列获取X射线注意数据在与平面图像切片对应的轴向位置附近的螺旋扫描路径的预定部分，其中所述预定部分具有大致等于所述重建角度的角度范围; 以及使用基本上仅沿着扫描路径的预定部分获取的数据来处理数据以重构切片的图像。

9. 发明申请

US20120236987A1 MULTIPLE ENERGY CT SCANNER 审中-公开
标题翻译：多功能CT扫描仪
公开(公告)号：US20120236987A1
公开(公告)日：2012-09-20
申请号：US13422099
申请日：2012-03-16
申请人： DAVID RUIMI , OLGA SHAPIRO , EHUD DAFNI
发明人： DAVID RUIMI , OLGA SHAPIRO , EHUD DAFNI
IPC分类号： A61B6/03 , G01N23/04
CPC分类号： A61B6/482 , A61B6/032 , A61B6/4028 , A61B6/4241 , A61B6/4291 , A61B6/5205 , G01T1/2985
摘要： A CT scanner for multiple energy CT scanning of a subject having an X-Ray source adapted to rotate about the subject; and a detector array, having a plurality of detector elements, adapted to acquire attenuation data for X-Rays that have been attenuated by a subject disposed between said X-Ray source and said detector array, said detector array comprising at least two types of detector element, which are differ by their spectral response. The scanner is adapted to generate images associated with the different X-Ray energy spectra.
摘要翻译：一种CT扫描器，用于对具有适于围绕被摄体旋转的X射线源的对象的多次CT扫描; 以及具有多个检测器元件的检测器阵列，适于获取由设置在所述X射线源和所述检测器阵列之间的被摄体衰减的X射线的衰减数据，所述检测器阵列包括至少两种类型的检测器元素，它们的光谱响应不同。扫描器适于产生与不同X射线能量谱相关联的图像。

10. 发明申请

US20100215142A1 Graded resolution field of view ct scanner 有权
标题翻译：渐变分辨率视角ct扫描仪
公开(公告)号：US20100215142A1
公开(公告)日：2010-08-26
申请号：US11921238
申请日：2006-05-31
申请人： Ehud Dafni , Yosi Morik
发明人： Ehud Dafni , Yosi Morik
IPC分类号： A61B6/03
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4208 , A61B6/4233 , G01N2223/419 , G01N2223/612 , G01T1/24 , G01T1/249 , G01T1/2985
摘要： A CT scanner comprising: a rotor rotatable about an axis of rotation: an X-ray source mounted to the rotor having a focal spot from which an X-ray beam emanates; an X-ray detector array comprising a plurality of X-ray detectors for detecting X-rays in the X-ray beam; wherein the detector array has at least one high resolution region in which detectors have a high packing density and at least one low resolution region in which detectors have a low packing density and are separated by X-ray insensitive regions substantially larger than insensitive regions resulting from septa between detectors that function to reduce detector cross talk.
摘要翻译：一种CT扫描仪，包括：可围绕旋转轴线旋转的转子：安装到所述转子上的X射线源具有发出X射线束的焦点; X射线检测器阵列，包括用于检测X射线束中的X射线的多个X射线检测器; 其中所述检测器阵列具有至少一个高分辨率区域，其中检测器具有高的堆积密度和至少一个低分辨率区域，其中检测器具有低的堆积密度，并且由不受敏感区域的X射线不敏感区域分离，检测器之间的隔垫功能可以减少检测器串扰。

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