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11. 发明申请

US20060200033A1 System, method and apparatus for measuring blood flow and blood volume 有权
标题翻译：用于测量血流量和血量的系统，方法和装置
公开(公告)号：US20060200033A1
公开(公告)日：2006-09-07
申请号：US10556483
申请日：2004-05-10
申请人： Hanan Keren , Avram Simon
发明人： Hanan Keren , Avram Simon
IPC分类号： A61B5/02
CPC分类号： A61B5/0535 , A61B5/4064 , A61N1/36521 , A61N1/36571
摘要： A system for measuring blood flow in an organ of a subject, particularly useful for non-invasive cardiac output monitoring (N.I.C.O.M.™), the system comprises: a radiofrequency generator for generating output radiofrequency signals; a plurality of electrodes, designed to be connectable to the skin of the subject, the electrodes being for transmitting the output radiofrequency signals to the organ and for sensing input radiofrequency signals of the organ. The system further comprises a mixer, electrically communicating with the radiofrequency generator and at least a portion of the plurality of electrodes, for mixing the output radiofrequency signals and the input radiofrequency signals, so as to provide a mixed radiofrequency signal being indicative of the blood flow. The system further comprises electronic circuitry, constructed and designed to filter out a portion of the mixed radiofrequency signal so as to substantially increase a signal-to-noise ratio of a remaining portion of the mixed radiofrequency signal
摘要翻译：一种用于测量受试者器官中的血流的系统，特别适用于非侵入式心输出量监测（N.I.C.O.M.（TM）），该系统包括：射频发生器，用于产生输出射频信号; 多个电极，被设计为可连接到被检体的皮肤，所述电极用于将输出的射频信号传送到器官，并用于感测器官的输入射频信号。该系统还包括混频器，与射频发生器和多个电极的至少一部分电连通，用于混合输出射频信号和输入射频信号，以便提供指示血流的混合射频信号。该系统还包括电子电路，其被构造和设计为滤除混合射频信号的一部分，以便基本上增加混合射频信号的剩余部分的信噪比

12. 发明授权

US5198768A Quadrature surface coil array 失效
标题翻译：平面线圈阵列
公开(公告)号：US5198768A
公开(公告)日：1993-03-30
申请号：US587447
申请日：1990-09-25
申请人： Hanan Keren
发明人： Hanan Keren
IPC分类号： G01R33/341 , G01R33/3415
CPC分类号： G01R33/3678 , G01R33/3415
摘要： A quadrature surface coil array comprising a plurality of single loop surface coils interspersed with a plurality of adjacent double loop surface coils, at least some of said surface coils overlapping the ends of adjacent surface coils and said double loop surface coils having the two loops in series to support only a single current mode thereby inhibiting cross coupling including next nearest neighbor cross coupling.
摘要翻译：一种正交表面线圈阵列，包括多个单环表面线圈，其散布有多个相邻的双环表面线圈，至少一些所述表面线圈与相邻表面线圈的端部重叠，并且所述双环表面线圈具有串联的两个回路以仅支持单个电流模式，从而抑制包括下一个最近邻交叉耦合的交叉耦合。

13. 发明授权

US4792759A Multi-frequency surface probe 失效
标题翻译：多频表面探头
公开(公告)号：US4792759A
公开(公告)日：1988-12-20
申请号：US78895
申请日：1987-07-29
申请人： Hanan Keren , Itzchak Linnenberg
发明人： Hanan Keren , Itzchak Linnenberg
IPC分类号： G01R33/341 , G01R33/36 , G01R33/20
CPC分类号： G01R33/3635 , G01R33/341
摘要： A radio frequency RF balanced coil for magnetic resonance operations. The coil is tuned to a plurality of frequencies for use in acquiring data of different elements at various frequencies without having to remove and/or return the coil. The coil has a single terminal pair and is coupled to the MR system with a single shielded cable.
摘要翻译：用于磁共振操作的射频RF平衡线圈。线圈被调谐到多个频率，用于以各种频率获取不同元件的数据，而不必去除和/或返回线圈。线圈具有单个端子对，并且用单个屏蔽电缆耦合到MR系统。

14. 发明授权

US08790267B2 Dynamically variable filter 有权
标题翻译：动态变量滤波器
公开(公告)号：US08790267B2
公开(公告)日：2014-07-29
申请号：US12673037
申请日：2008-08-11
申请人： Hanan Keren , Yoav Avidor , Pierre Squara , Daniel Burkhoff , Baruch Levy
发明人： Hanan Keren , Yoav Avidor , Pierre Squara , Daniel Burkhoff , Baruch Levy
IPC分类号： A61B5/02 , A61B5/026 , A61B5/029
CPC分类号： A61B5/02028 , A61B5/029 , A61B5/053 , A61B5/0535 , A61B5/0537 , A61B5/4869 , A61B5/7239 , A61B5/725 , A61B5/742
摘要： A method of processing a signal pertaining to at least one electrical property of an organ of a subject is disclosed. The method comprises determining a physiological condition of the subject, selecting a frequency band, filtering the signal according to the frequency band, and dynamically adapting the frequency band in response to a change in the physiological condition.
摘要翻译：公开了处理与被检体的器官的至少一个电气特性有关的信号的方法。该方法包括确定对象的生理状况，选择频带，根据频带对信号进行滤波，以及响应于生理状态的变化来动态调整频带。

15. 发明授权

US06608590B1 Alignment of antenna polarization axes 有权
标题翻译：天线偏振轴对准
公开(公告)号：US06608590B1
公开(公告)日：2003-08-19
申请号：US10086421
申请日：2002-03-04
申请人： Guy Naym , Hanan Keren
发明人： Guy Naym , Hanan Keren
IPC分类号： H01Q300
CPC分类号： H01Q1/1257
摘要： A method for aligning an antenna polarization axes of a dual polarized end-user terminal having an antenna. The antenna is aligned with a satellite in relation to azimuth and elevation. The end-user terminal is configured in an alignment mode to produce a first output corresponding to a first component of a received signal parallel to a first polarization axis of the antenna and a second output corresponding to a second component of the received signal parallel to a second polarization axis of the antenna. The first polarization axis is orthogonal to the second polarization axis. The method includes the steps of: receiving a linearly polarized signal; autocorrelating the first output and the second output to produce a measurement of autocorrelation; and adjusting the antenna polarization axes to minimize the measurement of autocorrelation.
摘要翻译：一种用于对准具有天线的双极化终端用户终端的天线偏振轴的方法。天线与方位角和高程相关的卫星对准。最终用户终端被配置为对准模式，以产生对应于平行于天线的第一偏振轴的接收信号的第一分量的第一输出和对应于平行于天线的接收信号的第二分量的第二输出天线的第二偏振轴。第一偏振轴与第二偏振轴正交。该方法包括以下步骤：接收线偏振信号; 自相关第一输出和第二输出以产生自相关的测量; 并调整天线偏振轴以最小化自相关的测量。

16. 发明授权

US06574500B2 Imaging methods and apparatus particularly useful for two and three-dimensional angiography 失效
标题翻译：成像方法和设备对于二维和三维血管造影特别有用
公开(公告)号：US06574500B2
公开(公告)日：2003-06-03
申请号：US09946168
申请日：2001-09-05
申请人： Hanan Keren
发明人： Hanan Keren
IPC分类号： A61B600
CPC分类号： A61B6/481 , A61B6/504
摘要： A method and apparatus for imaging a body by exposing the body to radiation transmitted through the body via successive angular portions from a radiation source on one side of the body to a radiation detector in alignment with the radiation source on the opposite side of the body; the radiation detector including a two-dimensional matrix of detector elements producing electrical outputs corresponding to the magnitudes of the radiation received by each detector element; the radiation source producing a conical beam sufficiently large such that each exposure covers all the detector elements in the two-dimensional array after traversing the body. Also described are a method and apparatus for producing angiographical images having an enhanced contrast-to-noise ratio (CNR) by subtracting, from each contrast image produced after injecting a contrast material, a masking image produced before injecting the contrast material, starting with the masking image determined to have a minimum change over its immediately preceding masking image in the respective sequence.
摘要翻译：一种用于对身体成像的方法和装置，所述方法和装置通过经身体的一侧上的辐射源经由连续角度部分暴露于穿过身体的辐射而辐射至与身体相反侧上的辐射源对准的辐射检测器; 所述辐射检测器包括检测器元件的二维矩阵，其产生对应于由每个检测器元件接收的辐射的幅度的电输出; 辐射源产生足够大的锥形束，使得每次曝光覆盖穿过身体后的二维阵列中的所有检测器元件。还描述了一种用于通过从注射造影剂材料之后产生的每个对比图像中减去在注射造影剂之前产生的掩蔽图像，从而从具有增强的对比度（CNR）的方式生成具有增强的对比度（CNR）的血管造影图像的方法和装置，被确定为在其相应序列中其紧接在前的掩蔽图像具有最小变化的掩蔽图像。

17. 发明授权

US5160891A Surface coil array receiver 失效
标题翻译：表面线圈接收器
公开(公告)号：US5160891A
公开(公告)日：1992-11-03
申请号：US609779
申请日：1990-11-07
申请人： Hanan Keren
发明人： Hanan Keren
IPC分类号： G01R33/341 , G01R33/3415
CPC分类号： G01R33/3678 , G01R33/3415
摘要： Receiver circuitry for a surface coil array used in magnetic resonance diagnostic systems, said circuitry minimizes reflections and thus relaxes the prior art necessity for balancing the individual receiver channel for each array by obtaining quadrature signals from the acquired signals in processing circuitry located as close as possible process-wise to the display equipment.
摘要翻译：用于磁共振诊断系统中的表面线圈阵列的接收器电路，所述电路使反射最小化，并因此松弛了现有技术的必要性，以通过从处理电路中获取的信号获得正交信号，该信号位于尽可能靠近的位置过程到显示设备。

18. 发明授权

US5055792A Miniaturized surface probes 失效
标题翻译：小型化表面探针
公开(公告)号：US5055792A
公开(公告)日：1991-10-08
申请号：US462469
申请日：1990-01-09
申请人： Hanan Keren
发明人： Hanan Keren
IPC分类号： G01R33/341 , G01R33/36
CPC分类号： G01R33/341 , G01R33/3628
摘要： A miniaturized surface probe for use with magnetic resonance (MR) systems. The probe comprises a conductor loop for use juxtaposed to a patient. A tuning and matching section connects the probe to the receiver. The section tunes the loop to the desired Larmor frequency and matches the loop to the MR system. A N.lambda./2 length of shielded cable is used to couple the loop to the spatially removed tuning and matching section.
摘要翻译：用于磁共振（MR）系统的小型化表面探针。探针包括与病人并列使用的导体回路。调谐和匹配部分将探头连接到接收器。该部分将循环调谐到所需的拉莫尔频率，并将循环与MR系统相匹配。 Nλ/ 2长度的屏蔽电缆用于将环路耦合到空间移除的调谐和匹配部分。

19. 发明授权

US4951688A Hyperthermic power delivery system 失效
标题翻译：高温电力输送系统
公开(公告)号：US4951688A
公开(公告)日：1990-08-28
申请号：US400716
申请日：1989-08-30
申请人： Hanan Keren
发明人： Hanan Keren
IPC分类号： A61N1/40 , G01R33/3415 , G01R33/48
CPC分类号： G01R33/4804 , A61N1/403 , G01R33/3415
摘要： A system for providing hyperthermic treatment of tumerous tissue using a phased array antenna for focusing radio frequency (RF) energy on the tumorous tissue. A magnetic resonance system generating free induction decay (FID) signals from the tumorous tissue. The FID signals are used to determine the relative phase and amplitude of RF excitations which are to be transmitted by each element of the phase array antenna.
摘要翻译：用于使用相控阵天线提供对肿瘤组织的射频（RF）能量进行聚焦的肿瘤组织的热疗治疗的系统。产生来自肿瘤组织的自由感应衰减（FID）信号的磁共振系统。 FID信号用于确定由相位阵列天线的每个元件传输的RF激励的相对相位和幅度。

20. 发明授权

US4902973A Separation of spectral components 失效
标题翻译：光谱成分的分离
公开(公告)号：US4902973A
公开(公告)日：1990-02-20
申请号：US172213
申请日：1988-03-23
申请人： Hanan Keren
发明人： Hanan Keren
IPC分类号： G01R33/485 , G01R33/54
CPC分类号： G01R33/4828 , G01R33/485
摘要： Separation of spectral components is achieved by acquiring radio frequency (RF) signals using a two dimensional scan sequence wherein the bandwidth of at least one of the RF pulses is less than or equal to the Larmor frequency difference of the spectral components. The slice select gradient pulse applied during the application of the RF pulse of limited frequency is smaller than the slice select gradient pulses applied during application of the other Rf pulses.
摘要翻译：通过使用二维扫描序列获取射频（RF）信号来实现频谱分量的分离，其中至少一个RF脉冲的带宽小于或等于频谱分量的拉莫尔频率差。在施加有限频率的RF脉冲期间施加的切片选择梯度脉冲小于在施加其它Rf脉冲期间施加的切片选择梯度脉冲。

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