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11. 发明申请

US20090285355A1 METHOD AND APPARATUS FOR POSITIONING A SUBJECT IN A CT SCANNER 有权
标题翻译：用于定位CT扫描仪中的主体的方法和装置
公开(公告)号：US20090285355A1
公开(公告)日：2009-11-19
申请号：US12120841
申请日：2008-05-15
申请人： Rafael Brada , Ehud Dafni
发明人： Rafael Brada , Ehud Dafni
IPC分类号： A61B6/00
CPC分类号： A61B6/022 , A61B6/035 , A61B6/04 , A61B6/08 , A61B6/4007 , A61B6/4028 , A61B6/463 , A61B6/488 , A61B6/504 , A61B6/541
摘要： An apparatus and method for optimally positioning a region of interest of a subject for imaging by a CT scanner. The scanner provides a source of one or more X-ray beams, at least one of which is used for acquiring a CT image of the subject, a movable support for the subject, and a controller that controls the X-ray source. To position the region of interest of the subject, the controller operates to illuminate the subject with X-rays to acquire stereo image data for the region of interest and controls the position of the support responsive to the stereo image data.
摘要翻译：一种用于最佳地定位用于由CT扫描仪成像的对象的感兴趣区域的装置和方法。扫描器提供一个或多个X射线束的源，其中至少一个用于获取被检体的CT图像，用于对象的可移动支撑件以及控制X射线源的控制器。为了定位对象的感兴趣区域，控制器操作以用X射线照射被摄体以获取感兴趣区域的立体图像数据，并且响应于立体图像数据来控制支架的位置。

12. 发明授权

US06914957B2 Wireless data transmission in CT-scanners 失效
标题翻译： CT扫描仪中的无线数据传输
公开(公告)号：US06914957B2
公开(公告)日：2005-07-05
申请号：US10312952
申请日：2001-12-19
申请人： Ehud Dafni , James W. Green
发明人： Ehud Dafni , James W. Green
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/56 , A61B6/032
摘要： A CT-scanner having a gantry comprising a stator and a rotor, wherein an X-ray source and array of X-ray detectors are mounted to the rotor for determining absorption of X-rays along paths through the body of a patient imaged by the CT-scanner, the CT imager comprising: a processor that processes data comprised in signals generated by the X-ray detectors responsive to intensity of X-rays from the X-ray source incident on the detectors to generate an image of the patient; at least one spread spectrum transmitter that receives data comprised in the signals generated by the X-ray detectors and transmits signals encoded with the data in accordance with a spread spectrum coding; and at least one spread spectrum receiver that receives the encoded signals transmitted by the at least one spread spectrum transmitter and forwards the encoded data to the processor.
摘要翻译：一种CT扫描器，其具有包括定子和转子的台架，其中X射线源和X射线检测器阵列安装到转子上，用于确定沿着穿过身体的X射线的吸收， CT扫描仪，CT成像器包括：处理器，其响应于来自入射在检测器上的X射线源的X射线的强度，处理由X射线检测器产生的信号中包含的数据，以产生患者的图像; 至少一个扩频发射机，其接收由X射线检测器产生的信号中包含的数据，并根据扩频编码发送用该数据编码的信号; 以及至少一个扩展频谱接收机，其接收由所述至少一个扩频发射机发送的编码信号，并将编码数据转发到处理器。

13. 发明申请

US20050070805A1 Assessment of vascular dilatation 有权
标题翻译：血管扩张评估
公开(公告)号：US20050070805A1
公开(公告)日：2005-03-31
申请号：US10676461
申请日：2003-09-30
申请人： Ehud Dafni
发明人： Ehud Dafni
IPC分类号： A61B5/00 , A61B5/02 , A61B5/053 , A61B5/107
CPC分类号： A61B5/02007 , A61B5/0002 , A61B5/02 , A61B5/053 , A61B5/1075 , A61B5/6824 , A61B5/6831
摘要： A method and apparatus of assessment of relative changes in the cross sectional area of a limb artery. The method includes applying to the artery an external pressure, which causes the cross-sectional area of the artery to change between systole and diastole much more than if the pressure is not applied, determining, over one or more cardiac cycles, a baseline value for a parameter related to the cross-sectional area of the artery, while the pressure is applied, applying a stimulus to the artery, determining, over one or more cardiac cycles, a stimulus-affected value for the parameter related to the cross-sectional area of the artery, while the pressure is applied and while the artery is in a dilated state affected by the stimulus and evaluating the artery based on a comparison of the determined stimulus-affected and baseline values, the baseline value is determined while the artery is substantially not affected by the stimulus.
摘要翻译：评估肢体动脉横截面积相对变化的方法和装置。该方法包括向动脉施加外部压力，其导致动脉的横截面积在心脏收缩和舒张之间变化，远远高于不施加压力的程度，在一个或多个心动周期上确定基线值与动脉的横截面积相关的参数，同时施加压力，对动脉施加刺激，在一个或多个心动周期上确定与横截面积相关的参数的刺激影响值的动脉，同时施加压力，并且当动脉处于受刺激影响的扩张状态并且基于确定的受刺激影响基线值的比较来评估动脉时，确定基线值，同时动脉基本上不受刺激影响。

14. 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。

15. 发明授权

US06198789B1 Variable current CT scanning 失效
标题翻译：可变电流CT扫描
公开(公告)号：US06198789B1
公开(公告)日：2001-03-06
申请号：US09355719
申请日：1999-11-10
申请人： Ehud Dafni
发明人： Ehud Dafni
IPC分类号： A61B600
CPC分类号： A61B6/542 , A61B6/027 , A61B6/032 , H05G1/26 , H05G1/36
摘要： A method for adjusting radiation flux in a CT scanner, including acquiring radiation attenuation data with respect to a body being imaged by the scanner from a CT scan, in a vicinity of a first axial position along the body and determining a modulation function, depending on radial view angle, based on the data. The body is translated relative to the scanner to a second axial position along the body, and a CT scan is performed in a vicinity of the second axial position, while controlling the radiation flux impinging on the body using the modulation function.
摘要翻译：一种用于调整CT扫描仪中的辐射通量的方法，包括从CT扫描获取相对于由扫描仪成像的身体的辐射衰减数据，沿着身体的第一轴向位置附近获取辐射衰减数据，并根据径向视角，根据数据。身体相对于扫描仪相对于沿着身体的第二轴向位置平移，并且在第二轴向位置附近执行CT扫描，同时使用调制功能来控制照射在身体上的辐射通量。

16. 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。

17. 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。

18. 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。

19. 发明申请

US20110064190A1 X RAY IMAGING SYSTEM WITH SCATTER RADIATION CORRECTION AND METHOD OF USING SAME 有权
标题翻译：具有扫描辐射校正的X射线成像系统及其使用方法
公开(公告)号：US20110064190A1
公开(公告)日：2011-03-17
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： G01N23/223 , G01N23/04
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。

20. 发明授权

US07869561B2 Cone-beam CT 有权
标题翻译：锥束CT
公开(公告)号：US07869561B2
公开(公告)日：2011-01-11
申请号：US12307374
申请日：2007-04-10
申请人： Ehud Dafni
发明人： Ehud Dafni
IPC分类号： A61B6/00
CPC分类号： A61B6/4028 , A61B6/032 , A61B6/4014 , A61B6/503 , A61B6/541 , G01N23/046 , G01N2223/419 , G01N2223/612 , H01J35/10 , H01J2235/068 , H05G1/58 , H05G1/60 , H05G1/70
摘要： Apparatus for CT cone beam scanning, comprising: a table for holding a subject; a gantry; a first detector array, having a given number of rows of detector elements spaced along an rotation axis of the gantry, mounted on the gantry; a first plurality of x-ray sources mounted on the gantry for rotation about the patient table on a rotation axis, the number of rows being at least twice the number of sources; and a controller that acquires data responsive to radiation from the sources from the detector array attenuated by at least part of the common volume of the subject irradiated by the plurality of radiation sources.
摘要翻译： CT锥形束扫描装置，包括：用于保持被检体的台; 龙门架第一检测器阵列，具有安装在台架上的具有沿着台架的旋转轴线间隔开的给定数量的检测器元件排; 安装在所述台架上的第一组多个x射线源，用于在旋转轴线上绕所述患者台转动，所述行数至少为所述源数量的两倍; 以及控制器，其获取响应来自所述检测器阵列的源的辐射的数据，所述数据由被所述多个辐射源照射的被摄体的共同体积的至少一部分衰减。

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