公开(公告)号：US09784809B2

公开(公告)日：2017-10-10

申请号：US13860041

申请日：2013-04-10

申请人： JEOL Ltd.

发明人： Yusuke Nishiyama ,  Takahiro Nemoto

IPC分类号： G01R33/44 ,  G01R33/46

CPC分类号： G01R33/441 ,  G01R33/4608 ,  G01R33/4633

摘要： A method is offered which permits NMR measurements of integer spin nuclei to be performed at higher sensitivity than heretofore. In particular, the method enables high-resolution multidimensional correlation NMR measurements on integer spin nucleus S having integer spin S and nucleus I of other spin species. The method starts with applying an RF magnetic field having a frequency that is n times (where n is an integer equal to or greater than 2) the Larmor frequency of the integer spin nucleus S to the spin S. Magnetization transfer is effected between the nucleus I and the integer spin nucleus S.

公开(公告)号：US09572515B1

公开(公告)日：2017-02-21

申请号：US14208974

申请日：2014-03-13

申请人： Fonar Corporation

发明人： Charles A. Green

IPC分类号： A61B5/055 ,  G01R33/34 ,  A61B5/05 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/44 ,  G01R33/00

CPC分类号： A61B5/055 ,  A61B5/05 ,  A61B5/0555 ,  A61B5/202 ,  A61B5/4255 ,  A61B5/4325 ,  A61B5/4381 ,  G01R33/0005 ,  G01R33/34 ,  G01R33/34046 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3678 ,  G01R33/441

摘要： An apparatus for magnetic resonance imaging includes a magnet, a patient support, and a contoured quadrature coil. The contoured quadrature coil includes a ring coil and an angled butterfly coil. The angled butterfly coil may have a front outer section, an inner section, and a back outer section. The front outer section and the back outer section may be oriented diagonally from the plane of the ring coil such that a portion of the front outer section and/or the back outer section are disposed above the plane of the ring coil and a portion of the front outer section and/or the back outer section are disposed below the plane of the ring coil. Thus, the planes of the front and back outer sections may be angled with respect to each other, and the inner section may be substantially pyramidal and disposed along or below the plane of the ring coil.

摘要翻译： 用于磁共振成像的装置包括磁体，患者支架和轮廓正交线圈。 轮廓正交线圈包括环形线圈和成角度的蝶形线圈。 成角度的蝶形线圈可以具有前外部部分，内部部分和后部外部部分。 前外侧部分和后部外部部分可以从环形线圈的平面对角地定向，使得前部外侧部分和/或后部外部部分的一部分设置在环形线圈的平面之上，并且一部分 前外侧部分和/或后部外侧部分设置在环形线圈的平面的下方。 因此，前后外部部分的平面可以相对于彼此成角度，并且内部部分可以基本上是金字塔形的并且沿着环形线圈的平面设置或配置。

公开(公告)号：US09335390B2

公开(公告)日：2016-05-10

申请号：US13513443

申请日：2010-11-29

申请人： David Miljak

发明人： David Miljak

IPC分类号： G01R33/421 ,  G01R33/341 ,  G01R33/422 ,  G01R33/36 ,  G01R33/44

CPC分类号： G01R33/341 ,  G01R33/3628 ,  G01R33/422 ,  G01R33/441

摘要： An apparatus for detecting magnetic resonance signals from a target, comprises a magnetic resonance sensor for responding to magnetic resonance signals from a target, and a shield member electrically isolated from the magnetic resonance sensor, the shield member being positioned relative to the magnetic resonance sensor such that when the magnetic resonance sensor faces the target, the shield member is behind the magnetic resonance sensor to at least partially shield the magnetic resonance sensor from magnetically coupling with sources other than the magnetic resonance signals.

摘要翻译： 一种用于从目标检测磁共振信号的装置包括用于响应来自目标的磁共振信号的磁共振传感器和与磁共振传感器电隔离的屏蔽构件，屏蔽构件相对于磁共振传感器定位， 当磁共振传感器面向目标时，屏蔽构件在磁共振传感器之后，以至少部分地屏蔽磁共振传感器与除磁共振信号之外的源磁耦合。

公开(公告)号：US09030202B2

公开(公告)日：2015-05-12

申请号：US13628824

申请日：2012-09-27

申请人： John T. Apostolos ,  Judy Feng ,  William Mouyos ,  Benjamin McMahon

发明人： John T. Apostolos ,  Judy Feng ,  William Mouyos ,  Benjamin McMahon

IPC分类号： G01V3/00 ,  G01R33/36 ,  G01N24/08 ,  G01R33/44 ,  G01N27/00 ,  G06F17/18

CPC分类号： G01R33/441 ,  G01N24/08 ,  G01N24/084 ,  G01N27/00 ,  G01R33/36 ,  G06F17/18

摘要： Nuclear quadrupole resonance measurement using two or more wire loop(s) within a space to define a portal, and driving the wire loop(s) with a baseband digital transmitter generating a chirped or stepped signal, to create a corresponding varying electromagnetic field within the portal. Coherent emissions reflected thereby are detected through a directional coupler feeding the transceiver. The detected coherent emissions are processed with a matched filter to determine presence of a target object within the portal.

摘要翻译： 使用在空间内的两个或更多个线环的核四极共振测量来限定入口，以及用产生啁啾或阶梯信号的基带数字发射器驱动线环，以在该内环内产生相应的变化电磁场 门户网站 通过馈送收发器的定向耦合器检测反射的相干发射。 用匹配的过滤器处理检测到的相干发射，以确定门户内目标对象的存在。

公开(公告)号：US08917092B2

公开(公告)日：2014-12-23

申请号：US13930441

申请日：2013-06-28

申请人： LynxRail Corporation

发明人： Taras Rudakov ,  Krzysztof Kilian

IPC分类号： G01V3/00 ,  G01V3/32 ,  G01N24/08 ,  G01R33/38 ,  G01R33/44

CPC分类号： G01N24/08 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/441 ,  G01V3/32

摘要： A method for mineral analysis of a sample based on detection of NQR and/or Local Field Magnetic Resonance (LFMR) signals from a particular substance within a sample includes: setting a frequency of RF pulses to be approximately equal to one of the NQR or LFMR frequencies of the substance; setting a set of parameters of the RF pulses to be optimal for the substance; setting a set of receiving parameters to be optimal for the substance; tuning the probe to maximum sensitivity for the signals detected at predetermined frequency and/or to maximum power transfer efficiency for RF pulses transmitted with the probe; transmitting the RF pulses with the probe at said optimal level during a transmitting period to irradiate the sample and excite an NQR or LFMR signal in the substance, if present; detecting and processing NQR or LFMR signals emitted by the substance; and calculating the concentration of the substance in the sample.

摘要翻译： 基于检测来自样品中特定物质的NQR和/或局部场磁共振（LFMR）信号的样品的矿物分析方法包括：将RF脉冲的频率设置为近似等于NQR或LFMR之一 物质的频率; 将RF脉冲的一组参数设置为物质的最佳值; 设置一组接收参数为物质最佳; 将探头调谐到以预定频率检测的信号的最大灵敏度和/或对于与探头一起传输的RF脉冲的最大功率传输效率; 在发射周期期间用探头以所述最佳电平发射RF脉冲以照射样品并激发物质中的NQR或LFMR信号（如果存在）; 检测和处理物质发出的NQR或LFMR信号; 并计算样品中物质的浓度。

公开(公告)号：US08912788B2

公开(公告)日：2014-12-16

申请号：US13901765

申请日：2013-05-24

申请人： AMI Research & Development, LLC

发明人： John T. Apostolos ,  Judy Feng ,  William Mouyos ,  Benjamin McMahon

IPC分类号： G01N27/74 ,  G01V3/00 ,  H03F3/04

CPC分类号： G01V3/14 ,  G01N24/084 ,  G01R33/441

摘要： System and methods for detecting substances such as explosives via the nuclear quadrupole resonance effect. We observe that the nuclear quadrupole resonances of explosives located within a cavity portal involve continuous Rabi transitions which are nonlinear processes since stimulated emission occurs. In other words, where there are no resonances caused by the presence of an explosive, high average power and low average power measurements should be identical. However, when resonances are stimulated by the system, the difference between these two conditions can be compared to determine a correction to measurements made when a person located in the cavity has explosive material on their person, without the need for separate empty portal or elaborate calibration procedures.

摘要翻译： 通过核四极共振效应检测炸药等物质的系统和方法。 我们观察到，位于腔室入口内的爆炸物的核四极共振涉及连续的Rabi转变，这是自受激发射以来的非线性过程。 换句话说，如果不存在由爆炸物引起的共振，高平均功率和低平均功率测量值应相同。 然而，当系统刺激共振时，可以比较这两个条件之间的差异，以确定当位于空腔中的人员具有人体上的爆炸性材料时进行的测量的校正，而不需要单独的空门或精细校准 程序。

公开(公告)号：US08773127B2

公开(公告)日：2014-07-08

申请号：US12957859

申请日：2010-12-01

申请人： John T. Apostolos ,  Paul A. Zank

发明人： John T. Apostolos ,  Paul A. Zank

IPC分类号： G01V3/00 ,  G01R33/20 ,  G01R33/3815

CPC分类号： G01V3/14 ,  G01N24/084 ,  G01N24/085 ,  G01R33/34061 ,  G01R33/3415 ,  G01R33/3607 ,  G01R33/3621 ,  G01R33/3692 ,  G01R33/441

摘要： A transmission line array is used for explosive/contraband detection using nuclear quadrupole resonance in which the array is driven in-phase with synchrony frequency-swept signals. Each of the balanced transmission lines is fed with a low power swept frequency source and stimulated emissions are picked out with a directional coupler. Location is provided using a cross grid array or a phase detector is used for each balanced line, with phase determining the distance to the sensed substance.

摘要翻译： 传输线阵列用于使用核四极共振进行爆炸/违禁检测，其中阵列与同步扫频信号同相驱动。 每个平衡传输线路馈送有低功率扫频频率源，并且用定向耦合器选出受激发射。 使用交叉网格阵列提供位置，或者每个平衡线使用相位检测器，相位确定到被感测物质的距离。

公开(公告)号：US20140070810A1

公开(公告)日：2014-03-13

申请号：US13974629

申请日：2013-08-23

申请人： MORPHO DETECTION, INC.

发明人： Hector Robert ,  Erik Edmund Magnuson

IPC分类号： G01R33/36

CPC分类号： G01R33/3628 ,  G01N24/084 ,  G01R33/3415 ,  G01R33/36 ,  G01R33/3664 ,  G01R33/441

摘要： A nuclear quadrupole resonance (NQR) sensor assembly includes an active sensor coil configured to transmit radiofrequency (RF) signals to an object of interest and receive return RF signals from the object of interest to generate sensor signals substantially representative of the return signals. The at least one reference coil is configured to receive environmental RF signals to generate reference signals at least partially representative of the environmental RF signals. The at least one reference coil is co-located with the active sensor coil. The active sensor coil and the at least one reference coil are in communication with a correction unit configured to remove interference components from the sensor signals using the reference signals.

摘要翻译： 核四极共振（NQR）传感器组件包括有源传感器线圈，其被配置为将射频（RF）信号传输到感兴趣的对象，并从感兴趣对象接收返回的RF信号，以产生基本上代表返回信号的传感器信号。 所述至少一个参考线圈被配置为接收环境RF信号以产生至少部分地代表环境RF信号的参考信号。 所述至少一个参考线圈与所述有源传感器线圈共同定位。 主动传感器线圈和至少一个参考线圈与被配置为使用参考信号从传感器信号去除干扰分量的校正单元通信。

公开(公告)号：US08570038B2

公开(公告)日：2013-10-29

申请号：US12957893

申请日：2010-12-01

申请人： Paul A. Zank ,  Peter A. Ketteridge ,  John T. Apostolos ,  Candice L. Brittain

发明人： Paul A. Zank ,  Peter A. Ketteridge ,  John T. Apostolos ,  Candice L. Brittain

IPC分类号： G01V3/00 ,  G01R33/44

CPC分类号： G01R33/12 ,  G01N24/084 ,  G01R33/3453 ,  G01R33/3607 ,  G01R33/441 ,  G01V3/14

摘要： Nuclear quadrupole resonance substance detection at a distance is provided by crossed or overlapping high frequency beams in which the frequency of one of the beams is offset with respect to the frequency of the other beam by an amount equal to the resonant frequency of the non-linear material to be detected. The presence of energy at the offset frequency within the overlapping beams pumps any non-linear material within the overlapping beams to cause stimulated emission which is detected, in one embodiment, utilizing a network analyzer, along with correlation of the detected stimulated emission signature with a library of signatures for predetermined substances.

摘要翻译： 在一定距离处的核四极共振物质检测由交叉或重叠的高频波束提供，其中一个波束的频率相对于另一个波束的频率偏移等于非线性的谐振频率的量 要检测的材料 在重叠波束内的偏移频率处的能量的存在泵送重叠波束内的任何非线性材料以引起受激发射，在一个实施例中，利用网络分析仪以及检测到的受激发射特征与 预定物质签名图书馆。

公开(公告)号：US08497678B2

公开(公告)日：2013-07-30

申请号：US12842285

申请日：2010-07-23

申请人： Taras Rudakov

发明人： Taras Rudakov

IPC分类号： G01V3/00

CPC分类号： G01N24/08 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/441 ,  G01V3/32

摘要： A method for mineral analysis of a sample based on detection of NQR and/or Local Field Magnetic Resonance (LFMR) signals from a particular substance within a sample includes: setting a frequency of RF pulses to be approximately equal to one of the NQR or LFMR frequencies of the substance; setting a set of parameters of the RF pulses to be optimal for the substance; setting a set of receiving parameters to be optimal for the substance; tuning the probe to maximum sensitivity for the signals detected at predetermined frequency and/or to maximum power transfer efficiency for RF pulses transmitted with the probe; transmitting the RF pulses with the probe at said optimal level during a transmitting period to irradiate the sample and excite an NQR or LFMR signal in the substance, if present; detecting and processing NQR or LFMR signals emitted by the substance; and calculating the concentration of the substance in the sample.

摘要翻译： 基于检测来自样品中特定物质的NQR和/或局部场磁共振（LFMR）信号的样品的矿物分析方法包括：将RF脉冲的频率设置为近似等于NQR或LFMR之一 物质的频率; 将RF脉冲的一组参数设置为物质的最佳值; 设置一组接收参数为物质最佳; 将探头调谐到以预定频率检测的信号的最大灵敏度和/或对于与探头一起传输的RF脉冲的最大功率传输效率; 在发射周期期间用探头以所述最佳电平发射RF脉冲以照射样品并激发物质中的NQR或LFMR信号（如果存在）; 检测和处理物质发出的NQR或LFMR信号; 并计算样品中物质的浓度。