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1. 发明授权

US06420872B1 Probe for detecting a transient magnetic resonance signal, wherein the ratio of the Q of the probe to the Q of the resonance signal is relatively large 失效
标题翻译：用于检测瞬态磁共振信号的探针，其中探针的Q与谐振信号的Q的比值相对较大
公开(公告)号：US06420872B1
公开(公告)日：2002-07-16
申请号：US09006440
申请日：1998-01-13
申请人： Allen N. Garroway , Joel B. Miller , Bryan H. Suits , Richard L. Garwin
发明人： Allen N. Garroway , Joel B. Miller , Bryan H. Suits , Richard L. Garwin
IPC分类号： G01V300
CPC分类号： G01R33/36 , G01R33/34053
摘要： An apparatus which includes a probe for detecting a resonance signal induced in a sample. The probe and the resonance signal each have a respective, corresponding Q, and the ratio, Q′, of the Q of the probe to the Q of the resonance signal is relatively large. Preferably, Q′ is greater than, or equal to, 1.
摘要翻译：一种装置，包括用于检测在样品中感应的共振信号的探针。探头和谐振信号各自具有相应的对应的Q，并且探针的Q与谐振信号的Q的比Q'相对较大。优选地，Q'大于或等于1。

2. 发明授权

US06900633B2 Substance detection by nuclear quardrupole resonance using at least two different excitation frequencies 失效
标题翻译：使用至少两个不同的激发频率的核态垒弹性共振物质检测
公开(公告)号：US06900633B2
公开(公告)日：2005-05-31
申请号：US10183351
申请日：2002-06-28
申请人： Karen L. Sauer , Bryan H. Suits , Joel B. Miller , Allen N. Garroway , Young K. Lee , Shouqin Huo
发明人： Karen L. Sauer , Bryan H. Suits , Joel B. Miller , Allen N. Garroway , Young K. Lee , Shouqin Huo
IPC分类号： G01R33/44 , G01V3/00
CPC分类号： G01R33/441
摘要： This invention involves an apparatus to measure the nuclear quadrupole (NQR) response of a specimen using three frequencies. Three-frequency NQR involves excitation of at least two transitions that causes an observed signal at a third transition frequency. Thus, the transition excited and detected is not irradiated at all. This reduces undesirable interfering signals due to the excitation, for example as a result of acoustic ringing and/or tank circuit ring-down, since the excitation is not applied at the frequency that is detected. This invention will be particularly useful to detect substances selected from the group consisting of explosives and narcotics using nitrogen NQR.
摘要翻译：本发明涉及一种使用三个频率测量样品的核四极（NQR）响应的装置。三频NQR涉及激励至少两个转换，其导致在第三转换频率处观察到的信号。因此，激发和检测的转变根本不被照射。这由于激励而导致的不期望的干扰信号，例如由于声音振铃和/或音箱电路的衰减，因为在所检测的频率处不施加激励。本发明对于使用氮NQR检测选自爆炸物和麻醉剂的物质特别有用。

3. 发明授权

US6054856A Magnetic resonance detection coil that is immune to environmental noise 失效
标题翻译：无环境噪声的磁共振检测线圈
公开(公告)号：US6054856A
公开(公告)日：2000-04-25
申请号：US53065
申请日：1998-04-01
申请人： Allen N. Garroway , Bryan H. Suits , Joel B. Miller
发明人： Allen N. Garroway , Bryan H. Suits , Joel B. Miller
IPC分类号： G01V3/14 , A61B5/055 , G01N24/00 , G01N24/10 , G01R33/343 , G01R33/36 , H01F5/00 , G01V3/00
CPC分类号： G01R33/343
摘要： A noise immune gradiometer split shield coil for use in magnetic resonanceetection, such as in Nuclear Magnetic Resonance (NMR) and Nuclear Quadrupole Resonance (NQR). The coil is formed by a transmission line configured as a magnetic field gradiometer. The transmission line has a conductor which is electrically continuous through the coil, and a shield which is split at a position that causes the gradiometer to be electrically balanced. In this manner, the coil provides a high degree of internal shielding to reduce the effects of environmental noise pick-up. Such coils are also less sensitive to the effects of nearby conducting media.
摘要翻译：用于磁共振检测的噪声免疫梯度分离屏蔽线圈，如核磁共振（NMR）和核四极共振（NQR）。线圈由配置为磁场梯度计的传输线形成。传输线具有通过线圈电连续的导体，以及在使梯度计电平衡的位置处被分裂的屏蔽。以这种方式，线圈提供高度的内部屏蔽以减少环境噪声拾取的影响。这种线圈对附近导电介质的影响也较不敏感。

4. 发明授权

US06924644B2 Radiofrequency surface detection coil 失效
公开(公告)号：US06924644B2
公开(公告)日：2005-08-02
申请号：US10662163
申请日：2003-09-12
申请人： Bryan H. Suits , Allen N. Garroway
发明人： Bryan H. Suits , Allen N. Garroway
IPC分类号： G01V3/10 , G01V3/00
CPC分类号： G01V3/105
摘要： According to the invention, a magnetic field gradiometer detector for detecting a material of interest positioned in a detecting region outside the detector includes a transmitter for generating an output signal at a selected frequency, a receiver for detecting the signal, a probe, and a switch coupling the receiver and transmitter with the probe that alternately connects and disconnects the receiver and transmitter to the probe, switching between transmitting and receiving. The probe includes tuning elements and a gradiometer coil array. The gradiometer coil array includes a first surface coil and a second surface coil wound in an opposite sense, the probe having a first side and an opposite second side, with the first and second surface coils configured asymmetrically such that the probe projects a magnetic field in the outside detecting region adjacent to the first side while being self-shielded on the second side. Accordingly, the material of interest is detected with increased sensitivity and accuracy in the detecting region with the detector shielded from outside RF sources.

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