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1. 发明申请

US20050162163A1 Pulse sequences for exciting nuclear quadrupole resonance 失效
标题翻译：用于激发核四极共振的脉冲序列
公开(公告)号：US20050162163A1
公开(公告)日：2005-07-28
申请号：US11016728
申请日：2004-12-21
申请人： Vassili Mikhaltsevitch , Taras Rudakov , John Flexman , Peter Hayes , Warrick Chisholm
发明人： Vassili Mikhaltsevitch , Taras Rudakov , John Flexman , Peter Hayes , Warrick Chisholm
IPC分类号： G01R33/44 , G01V3/00
CPC分类号： G01R33/441 , G01N24/084
摘要： An apparatus and method for producing a multi-pulse sequence for irradiating a substance provided with quadrupole nuclei with either integer or half-integer spins to detect an NQR signal emitted therefrom. The apparatus has pulse sequence generating means adapted to produce multi-pulse sequences with pulse intervals exceeding T2* and containing a preparatory pulse or group of pulses for creating echo signals between the pulses. The pulse sequence is organised so that the resulting signal contains a prevailing echo component produced by the preparatory pulse or group of pulses.
摘要翻译：一种用于产生用于对具有四极核的物质进行整数或半整数自旋照射的多脉冲序列的装置和方法，以检测从其发出的NQR信号。该装置具有脉冲序列发生装置，其适于产生具有超过T 2 * 2的脉冲间隔的多脉冲序列，并且包含用于在脉冲之间产生回波信号的准备脉冲或脉冲组。组织脉冲序列使得所得信号包含由预备脉冲或脉冲组产生的主要回波分量。

2. 发明申请

US20070040556A1 Q-factor switching method and apparatus for detecting nuclear quadrupole and nuclear magnetic resonance signals 审中-公开
标题翻译：用于检测核四极和核磁共振信号的Q因子切换方法和装置
公开(公告)号：US20070040556A1
公开(公告)日：2007-02-22
申请号：US11438439
申请日：2006-05-23
申请人： Taras Rudakov , Vassili Mikhaltsevitch , Warrick Chisholm , John Flexman , Peter Hayes
发明人： Taras Rudakov , Vassili Mikhaltsevitch , Warrick Chisholm , John Flexman , Peter Hayes
IPC分类号： G01V3/00
CPC分类号： G01R33/441 , G01R33/3628 , G01V3/14
摘要： A probe (80) for irradiating a sample with RF energy during transmitting periods and detecting an NQR or NMR signal from a substance contained within the sample during receiving periods. The probe (80) comprises a variable impedance unit (20) for changing the Q-factor of the probe and a probe coil. The probe (80) is responsive to powerful RF pulses applied thereto to excite an RF magnetic field in the probe coil during the transmitting periods. The variable impedance unit (20) is controllable to provide a Q-factor for the probe (80) at: (i) an optimal level during a prescribed transmitting period of an RF pulse for irradiating the sample with said RF energy; (ii) a minimal level during a prescribed recovery period immediately following said transmitting period to rapidly dampen transient signals from the probe; and (iii) a maximal level during a prescribed receiving period for detecting an NQR or NMR signal from the target substance if present, immediately following the recovery period. A method for detecting an NQR or NMR signal within a sample using the probe (80) is also described.
摘要翻译：用于在发射期间用RF能量照射样品的探针（80），并且在接收期间从包含在样品中的物质检测NQR或NMR信号。探针（80）包括用于改变探针的Q因子和探针线圈的可变阻抗单元（20）。探针（80）响应于施加到其上的强大的RF脉冲，以在发射期间激发探针线圈中的RF磁场。可变阻抗单元（20）是可控制的，以便在以下条件下为探针（80）提供Q因子：（i）在用于用所述RF能量照射样本的RF脉冲的规定的发射周期期间的最佳电平; （ii）紧接在所述传输周期之后的规定的恢复期间的最小电平以快速抑制来自探针的瞬态信号; 以及（iii）在规定的接收期间内，在恢复期之后立即检测来自目标物质（如果存在）的NQR或NMR信号的最大电平。还描述了使用探针（80）检测样品内的NQR或NMR信号的方法。

3. 发明申请

US20050146331A1 Transmit-receive coil system for nuclear quadrupole resonance signal detection in substances and components thereof 审中-公开
标题翻译：用于在其物质和组件中进行核四极共振信号检测的发射 - 接收线圈系统
公开(公告)号：US20050146331A1
公开(公告)日：2005-07-07
申请号：US10985001
申请日：2004-11-10
申请人： John Flexman , Warrick Chisholm , Taras Rudakov , Vassili Mikhaltsevitch , Peter Hayes
发明人： John Flexman , Warrick Chisholm , Taras Rudakov , Vassili Mikhaltsevitch , Peter Hayes
IPC分类号： G01R33/34 , G01R33/44 , H01Q7/00 , G01V3/00
CPC分类号： H01Q7/00 , G01R33/34046 , G01R33/441
摘要： An antenna and shield apparatus for detecting phenomenal signals using nuclear and electronic resonance detection technology, comprising: a transmit and receive antenna, an electric field shield 60 and an outer shield 52. The antenna is a multiple parallel loop transmit-receive antenna forming a main coil assembly 11 having a plurality of loop segments 20 optionally interconnected by connectors in the form of conducting bars 10, relays 16, or nothing. The electric field shield 60 comprises an inner sleeve of conducting material 60, 68 disposed on the inside of the coil assembly 11 for shielding the electric field emanating from the coil assembly 11 from the target volume circumscribed by the assembly. The outer shield 52 comprises a central screen portion 55, waveguides 57 at either end thereof and a sloping channel portion for interconnecting the two. The coil assembly 11 and the electric field shield 60 are housed within the outer shield 52.
摘要翻译：一种用于使用核和电子共振检测技术检测现象信号的天线和屏蔽装置，包括：发射和接收天线，电场屏蔽60和外屏蔽52。该天线是形成具有多个环路段20的主线圈组件11的多并联环路发射 - 接收天线，该多个环路段20可选地通过导电棒10，继电器16或任何形式的连接器互连。电场屏蔽件60包括设置在线圈组件11内部的导电材料60,68的内套筒，用于屏蔽从线圈组件11发出的电场与组件所限定的目标体积。外屏蔽52包括中央屏幕部分55，其任一端处的波导57和用于互连两者的倾斜通道部分。线圈组件11和电场屏蔽件60容纳在外屏蔽件52内。

4. 发明申请

US20050116714A1 Q-factor switching method and apparatus for detecting nuclear quadrupole and nuclear magnetic resonance signals 有权
标题翻译：用于检测核四极和核磁共振信号的Q因子切换方法和装置
公开(公告)号：US20050116714A1
公开(公告)日：2005-06-02
申请号：US10838256
申请日：2004-05-05
申请人： Taras Rudakov , Vassili Mikhaltsevitch , Warrick Chisholm , John Flexman , Peter Hayes
发明人： Taras Rudakov , Vassili Mikhaltsevitch , Warrick Chisholm , John Flexman , Peter Hayes
IPC分类号： G01R33/36 , G01R33/44 , G01V3/14 , G01V3/00
CPC分类号： G01R33/441 , G01R33/3628 , G01V3/14
摘要： A probe (80) for irradiating a sample with RF energy during transmitting periods and detecting an NQR or NMR signal from a substance contained within the sample during receiving periods. The probe (80) comprises a variable impedance unit (20) for changing the Q-factor of the probe and a probe coil. The probe (80) is responsive to powerful RF pulses applied thereto to excite an RF magnetic field in the probe coil during the transmitting periods. The variable impedance unit (20) is controllable to provide a Q-factor for the probe (80) at: (i) an optimal level during a prescribed transmitting period of an RF pulse for irradiating the sample with said RF energy; (ii) a minimal level during a prescribed recovery period immediately following said transmitting period to rapidly dampen transient signals from the probe; and (iii) a maximal level during a prescribed receiving period for detecting an NQR or NMR signal from the target substance if present, immediately following the recovery period. A method for detecting an NQR or NMR signal within a sample using the probe (80) is also described.
摘要翻译：用于在发射期间用RF能量照射样品的探针（80），并且在接收期间从包含在样品中的物质检测NQR或NMR信号。探针（80）包括用于改变探针的Q因子和探针线圈的可变阻抗单元（20）。探针（80）响应于施加到其上的强大的RF脉冲，以在发射期间激发探针线圈中的RF磁场。可变阻抗单元（20）是可控制的，以便在以下条件下为探针（80）提供Q因子：（i）在用于用所述RF能量照射样本的RF脉冲的规定发射周期期间的最佳电平; （ii）紧接在所述传输周期之后的规定的恢复期间的最小电平以快速抑制来自探针的瞬态信号; 以及（iii）在规定的接收期间内，在恢复期之后立即检测来自目标物质（如果存在）的NQR或NMR信号的最大电平。还描述了使用探针（80）检测样品内的NQR或NMR信号的方法。

5. 发明申请

US20070018644A1 Signal processing for detection of nqr signals 审中-公开
标题翻译：用于检测nqr信号的信号处理
公开(公告)号：US20070018644A1
公开(公告)日：2007-01-25
申请号：US10543771
申请日：2004-01-30
申请人： John Flexman , Warrick Chisholm , Peter Hayes , Vassili Mikhaltsevitch , Taras Rudakov
发明人： John Flexman , Warrick Chisholm , Peter Hayes , Vassili Mikhaltsevitch , Taras Rudakov
IPC分类号： G01V3/00
CPC分类号： G01R33/441 , G01N24/084 , G01R33/56 , G01R33/5608
摘要： A method for analysing signals received from an object. The method initially comprises deriving the parameters of frequency and phase of said signals in either the time domain or frequency domain. It then comprises identifying whether the signals conform to a linear relationship between the two parameters to ascertain whether a true signal representative of a character of the object is present. The character may be a nuclear or electronic resonance, such as NQR, NMR or ESR, which is indicative of a particular substance. Signal processing methods involving HTLS, HSVD, MPM, MMPM, FFT, STFT and STMPM are also described.
摘要翻译：一种用于分析从对象接收的信号的方法。该方法最初包括在时域或频域中导出所述信号的频率和相位的参数。然后包括识别信号是否符合两个参数之间的线性关系，以确定是否存在代表对象的字符的真实信号。该特征可以是核或电子共振，例如指示特定物质的NQR，NMR或ESR。还描述了涉及HTLS，HSVD，MPM，MMPM，FFT，STFT和STMPM的信号处理方法。

6. 发明申请

US20060091883A1 Pulse sequences for exciting nuclear quadrupole resonance 有权
标题翻译：用于激发核四极共振的脉冲序列
公开(公告)号：US20060091883A1
公开(公告)日：2006-05-04
申请号：US10518480
申请日：2003-06-20
申请人： Vassili Mikhaltsevitch , Taras Rudakov , John Flexman , Peter Hayes , Warrick Chisholm
发明人： Vassili Mikhaltsevitch , Taras Rudakov , John Flexman , Peter Hayes , Warrick Chisholm
IPC分类号： G01V3/00
CPC分类号： G01R33/441 , G01N24/084 , G01R33/5613
摘要： An apparatus and a method for producing a multi-pulse sequence for irradiating a substance provided with quadrupole nuclei with either integer or half-integer spins to detect an NQR signal emitted therefrom. The apparatus has pulse sequence generating means adapted to produce a combination of two or more pulse sequences, arranged so that a definite regularity of the phase alteration of pulses in each of the pulse sequences occurs that is equivalent to a shift of spectral components of the pulse sequences in relation to each other. Furthermore, in at least one of the pulse sequences, there are not less than two phases alternating. A preparatory pulse may be included in one of the pulse sequences to reduce the effect of temperature, increase the intensity of the NQR signal and simultaneously eliminate intensity anomalies. Alternatively, the combination of pulse sequences may be different from a combination of PAPS and NPAPS, and none of the pulse sequences contain a preparatory pulse.
摘要翻译：一种用于产生用于向具有四极核的物质照射具有整数或半整数自旋的物质的多脉冲序列的装置和方法，以检测从其发射的NQR信号。该装置具有适于产生两个或多个脉冲序列的组合的脉冲序列发生装置，其被布置为使得发生每个脉冲序列中的脉冲相位变化的确定规律，其相当于脉冲的频谱分量的偏移相互关联的序列。此外，在至少一个脉冲序列中，存在不少于两相的交替。预备脉冲可以包括在脉冲序列之一中以减少温度的影响，增加NQR信号的强度并同时消除强度异常。或者，脉冲序列的组合可以不同于PAPS和NPAPS的组合，并且脉冲序列都不包含预备脉冲。

7. 发明申请

US20060145697A1 Probe coil for detecting nqr-responsive materials in large volumes 有权
标题翻译：用于大量检测nqr响应材料的探针线圈
公开(公告)号：US20060145697A1
公开(公告)日：2006-07-06
申请号：US10534024
申请日：2003-11-06
申请人： Vassili Mikhaltsevitch , Taras Rudakov , Warrick Chisholm , John Flexman , Peter Hayes
发明人： Vassili Mikhaltsevitch , Taras Rudakov , Warrick Chisholm , John Flexman , Peter Hayes
IPC分类号： G01V3/00
CPC分类号： G01R33/441
摘要： A coil assembly (11) comprising two coil sections (13a and 13b). Each of the sections (13) consists of a combination of a spiral coil (15) having a variable coil pitch arranged in a saddle shape configuration. The saddle shape has a central portion (17) and a pair of outer coextending portions (19). The coil sections (13) are located opposite each other with the central portions (17) of the respective sections disposed in parallel spaced apart relationship and the corresponding coextending portions (19) of the respective sections disposed in coplanar alignment with each other so that the sections combine to circumscribe a scanned volume within which the target substance is to be disposed.
摘要翻译：一种线圈组件（11），包括两个线圈段（13a和13b）。每个部分（13）由具有以鞍形构造布置的可变线圈间距的螺旋线圈（15）的组合构成。鞍座形状具有中心部分（17）和一对外部共延伸部分（19）。线圈部分（13）彼此相对定位，各部分的中心部分（17）以平行间隔的关系设置，并且相应部分的相应共同延伸部分（19）彼此共面对准设置，使得部分组合以限定其中要放置目标物质的扫描体积。

8. 发明申请

US20060012366A1 Scanner for nuclear quadrupole resonance measurements and method therefor 审中-公开
标题翻译：用于核四极共振测量的扫描仪及其方法
公开(公告)号：US20060012366A1
公开(公告)日：2006-01-19
申请号：US10519150
申请日：2003-06-26
申请人： John Feldman , Warrick Chisholm , Peter Hayes , Vassili Mikhaltsevitch , Taras Rudakov , Christopher Aitken
发明人： John Feldman , Warrick Chisholm , Peter Hayes , Vassili Mikhaltsevitch , Taras Rudakov , Christopher Aitken
IPC分类号： G01V3/00
CPC分类号： G01R33/441 , G01N24/084 , G01R33/34053 , G01R33/36 , G01V3/14
摘要： An NQR scanner for detecting the presence of a substance containing quadrupole nuclei within an object. A pulse generating means (1) generates pulse sequences that are used to irradiate the object in a pulsed magnetic field at a requisite NQR frequency for the substance to be detected. A high power RF transmit amplifier (2) amplifies the signal to produce sufficient magnetic field strength to irradiate a scan volume within which the object is disposed for detection purposes and cause an NQR transition to a detectable level within the substance if present within the object. A method for detecting the presence of a substance containing quadrupole nuclei within an object is also described
摘要翻译：一种NQR扫描器，用于检测物体内含有四极核的物质的存在。脉冲发生装置（1）产生脉冲序列，该脉冲序列用于以所需要的NQR频率的脉冲磁场照射待检测物质的物体。高功率RF发射放大器（2）放大信号以产生足够的磁场强度以照射其中物体被放置用于检测目的的扫描体积，并且如果存在于物体内并导致NQR转变到物质内的可检测水平。还描述了用于检测物体内含有四极核的物质的存在的方法

9. 发明申请

US20060038563A1 Improvements for nuclear quadrupole resonance measurements 失效
标题翻译：核四极共振测量的改进
公开(公告)号：US20060038563A1
公开(公告)日：2006-02-23
申请号：US10518920
申请日：2003-06-24
申请人： Warrick Chisholm , Peter Hayes , John Flexman , Wassili Mikhaltsevitch , Taras Rudakov
发明人： Warrick Chisholm , Peter Hayes , John Flexman , Wassili Mikhaltsevitch , Taras Rudakov
IPC分类号： G01V3/00
CPC分类号： G01R33/441
摘要： An apparatus for exciting and detecting NQR in a substance containing quadrupole nuclei responsive to the NQR phenomenon. The apparatus includes a coil 15 for irradiating an item that may contain a substance with RF waves to excite NQR in quadrupole nuclei within the substance and for receiving an NQR signal emitted in response thereto. The apparatus also includes a transmitter unit 10, a receiver unit 11, a sensing means and a computer 12 for processing the treated received signal to identify a said NQR signal therein.
摘要翻译：一种用于激发和检测响应于NQR现象的含有四极核的物质中的NQR的装置。该装置包括线圈15，用于照射可能含有物质的物品的射频波，以激发物质内的四极核中的NQR，并接收响应于其发射的NQR信号。该装置还包括发射机单元10，接收机单元11，感测装置和用于处理经处理的接收信号以在其中识别所述NQR信号的计算机12。

10. 发明申请

US20060033499A1 Receive system for high q antennas in nqr and a method of detecting substances 审中-公开
标题翻译： nqr中高q天线的接收系统和物质检测方法
公开(公告)号：US20060033499A1
公开(公告)日：2006-02-16
申请号：US10517627
申请日：2003-06-13
申请人： John Flexman , Peter Hayes , Warick Chisholm , Vassile Mikhaltsevitch , Taras Rudakov
发明人： John Flexman , Peter Hayes , Warick Chisholm , Vassile Mikhaltsevitch , Taras Rudakov
IPC分类号： G01V3/00
CPC分类号： G01R33/3621 , G01R33/3628 , G01R33/441
摘要： A receiving system (11) for connection to an antenna arrangement (19) for detecting response signals from a substance having quadrupolar nuclei excited so as to produce nuclear quadrupole resonance in certain of the quadrupolar nuclei. A method for receiving a response signal via the antennae arrangement (19) is also described. The receiving system (11) includes an amplifier (17) to amplify the received response signal from the antenna arrangement (19) for subsequent processing, a matching section (15) to match the amplifier (17) to the antenna (19), and an isolating switch (13) to isolate the antenna from the receiving system (11). The matching section (15) noise matches the receiving system (11) to the antenna (19) during a receiving period to reduce the Q factor of the antenna without significantly degrading the signal to noise ratio. The isolating switch (13) isolates the receiving system (11) from the antenna (19) during a transmitting period when an excitation signal is transmitted by the antenna (19) to irradiate the substance. It also electrically connects the receiving system (11) to the antenna during the receiving period immediately after the transmitting period.
摘要翻译：一种用于连接到天线装置（19）的接收系统（11），用于检测来自具有四极核激励的物质的响应信号，从而在某些四极核中产生核四极共振。还描述了一种通过天线装置（19）接收响应信号的方法。接收系统（11）包括放大器（17），用于放大来自天线装置（19）的后续处理的接收到的响应信号，将放大器（17）与天线（19）匹配的匹配部分（15），以及隔离开关（13），用于将天线与接收系统（11）隔离开来。在接收周期期间，匹配部分（15）噪声与接收系统（11）匹配到天线（19），以减少天线的Q因子而不会显着降低信噪比。隔离开关（13）在通过天线（19）发射激励信号以照射物质的发射期间隔离接收系统（11）与天线（19）。它也在发送周期之后的接收周期期间将接收系统（11）电连接到天线。

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