公开(公告)号：US08388545B2

公开(公告)日：2013-03-05

申请号：US11884227

申请日：2006-01-18

申请人： Hanan Keren ,  Avram B. Simon

发明人： Hanan Keren ,  Avram B. Simon

IPC分类号： A61B5/02

CPC分类号： A61B5/0535 ,  A61B5/026 ,  A61B5/0295 ,  A61B5/7239

摘要： A method of calculating blood flow in an organ of a subject using output radiofrequency signals transmitted to the organ and input radiofrequency signals received from the organ, the method comprises determining a phase shift of the input radiofrequency signals relative to the output radiofrequency signals and using the phase shift to calculate the blood flow in the organ.

摘要翻译： 一种使用发送到器官的输出射频信号计算被检者的器官中的血流量并输入从器官接收的射频信号的方法，所述方法包括：确定输入射频信号相对于输出射频信号的相移，并使用 相移计算器官中的血流量。

公开(公告)号：US20100217140A1

公开(公告)日：2010-08-26

申请号：US12596483

申请日：2008-04-15

申请人： Yoav Avidor ,  Hanan Keren

发明人： Yoav Avidor ,  Hanan Keren

IPC分类号： A61B5/0402

CPC分类号： A61B5/0535 ,  A61B5/0245 ,  A61B5/029

摘要： A method of predicting onset of electromechanical dissociation in a heart of a subject is disclosed. The method comprises: extracting from the composite input signal an electrocardiac signal and determining electrical activity of the heart based on the electrocardiac signal; extracting from the composite input signal a radiofrequency signal and determining blood flow measure based on the radiofrequency signal; and if the blood flow measure is below a predetermined threshold and the electrical activity is above a predetermined threshold, then predicting the onset of electromechanical dissociation.

摘要翻译： 公开了一种预测受试者心脏中机电解离发病的方法。 该方法包括：从复合输入信号中提取心电信号，并根据心电信号确定心脏的电活动; 从所述复合输入信号中提取射频信号，并基于所述射频信号确定血流量度量; 并且如果血液流量测量值低于预定阈值并且电活动高于预定阈值，则预测机电解离的开始。

公开(公告)号：US20100191127A1

公开(公告)日：2010-07-29

申请号：US12527697

申请日：2008-02-21

申请人： Hanan Keren ,  Daniel Burkhoff ,  Yoav Avidor ,  Pierre Squara

发明人： Hanan Keren ,  Daniel Burkhoff ,  Yoav Avidor ,  Pierre Squara

IPC分类号： A61B5/0205

CPC分类号： A61B5/0535 ,  A61B5/02028 ,  A61B5/0205 ,  A61B5/029 ,  A61B5/0537 ,  A61B5/4869

摘要： A method of estimating exercise capacity of a subject is disclosed. The method uses output radiofrequency signals transmitted to the subject during exercise and input radiofrequency signals received from the subject during exercise. The method comprises: determining a phase shift of the input radiofrequency signals relative to the output radiofrequency signals; calculating cardiac output based on the phase shift; and using the cardiac output for estimating the exercise capacity of the subject.

摘要翻译： 公开了一种估计受试者运动能力的方法。 该方法使用在运动期间发送到被摄体的输出射频信号，并且在运动期间输入从对象接收的射频信号。 该方法包括：确定输入射频信号相对于输出射频信号的相移; 基于相移计算心输出量; 以及使用心输出量来估计受试者的运动能力。

公开(公告)号：US4928064A

公开(公告)日：1990-05-22

申请号：US321299

申请日：1989-03-10

申请人： Hanan Keren

发明人： Hanan Keren

IPC分类号： G01R33/341

CPC分类号： G01R33/3678 ,  G01R33/341

摘要： A surface coil for use in MRI data acquisition systems wherein the surface coil has the capability of operating as a quadrature coil and of supporting two independent current moles enabling tuning to two separate frequencies.

摘要翻译： 一种用于MRI数据采集系统的表面线圈，其中表面线圈具有作为正交线圈操作的能力，并支持两个独立的电流摩尔，使得能够调谐到两个分开的频率。

公开(公告)号：US4901022A

公开(公告)日：1990-02-13

申请号：US374552

申请日：1989-07-05

申请人： Hanan Keren ,  Itzchak Linenberg

发明人： Hanan Keren ,  Itzchak Linenberg

IPC分类号： G01R33/36

CPC分类号： G01R33/3628

摘要： A broadband matching and decoupling network for matching RF coils to an MR system at more than one Larmor frequency using coaxial cable that is equal to 1/4.lambda. at the lower Larmor frequency and an odd multiple of 1/4.lambda. at the higher Larmor frequency.

摘要翻译： 宽带匹配和去耦网络，用于使用同轴电缆将RF线圈与MR系统匹配，该同轴电缆在较低的拉莫尔频率处等于1/4λ，在较高拉莫尔频率处的1/4λ的奇数倍 。

公开(公告)号：US09095271B2

公开(公告)日：2015-08-04

申请号：US11889395

申请日：2007-08-13

申请人： Hanan Keren

发明人： Hanan Keren

IPC分类号： A61B5/02 ,  A61B5/026 ,  A61B5/029 ,  A61B5/053 ,  A61B5/00

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.

公开(公告)号：US08876725B2

公开(公告)日：2014-11-04

申请号：US12527697

申请日：2008-02-21

申请人： Hanan Keren ,  Daniel Burkhoff ,  Yoav Avidor ,  Pierre Squara

发明人： Hanan Keren ,  Daniel Burkhoff ,  Yoav Avidor ,  Pierre Squara

IPC分类号： A61B5/08 ,  A61B5/00 ,  A61B5/02 ,  A61B5/053 ,  A61B5/029 ,  A61B5/0205

CPC分类号： A61B5/0535 ,  A61B5/02028 ,  A61B5/0205 ,  A61B5/029 ,  A61B5/0537 ,  A61B5/4869

摘要： A method of estimating exercise capacity of a subject is disclosed. The method uses output radiofrequency signals transmitted to the subject during exercise and input radiofrequency signals received from the subject during exercise. The method comprises: determining a phase shift of the input radiofrequency signals relative to the output radiofrequency signals; calculating cardiac output based on the phase shift; and using the cardiac output for estimating the exercise capacity of the subject.

摘要翻译： 公开了一种估计受试者运动能力的方法。 该方法使用在运动期间发送到被摄体的输出射频信号，并且在运动期间输入从对象接收的射频信号。 该方法包括：确定输入射频信号相对于输出射频信号的相移; 基于相移计算心输出量; 以及使用心输出量来估计受试者的运动能力。

公开(公告)号：US20100031959A1

公开(公告)日：2010-02-11

申请号：US12450022

申请日：2008-03-06

申请人： Yoav Avidor ,  Daniel Burkhoff ,  Pierre Squara ,  Hanan Keren

发明人： Yoav Avidor ,  Daniel Burkhoff ,  Pierre Squara ,  Hanan Keren

IPC分类号： A61M16/00 ,  A61B5/02 ,  A61B5/145

CPC分类号： A61B5/0535 ,  A61B5/029 ,  A61B5/145 ,  A61B5/4818

摘要： A method of monitoring sleep of a sleeping subject is disclosed. The method comprises determining a phase shift of input radiofrequency signals received from the subject during sleep relative to output radiofrequency signals transmitted to the subject during sleep, calculating cardiac output based on the phase shift, and using the cardiac output for identifying sleep apnea events.

摘要翻译： 公开了一种监测睡眠对象睡眠的方法。 所述方法包括：确定在休眠期间从睡眠期间对象接收的输入射频信号相对于在睡眠期间发送给对象的输出射频信号的相移，基于相移计算心输出量，以及使用心输出量来识别睡眠呼吸暂停事件。

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

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。