Squid detected NMR and MRI at ultralow fields
    1.
    发明授权
    Squid detected NMR and MRI at ultralow fields 有权
    鱿鱼在超低场检测到核磁共振和核磁共振

    公开(公告)号:US07053610B2

    公开(公告)日:2006-05-30

    申请号:US10995765

    申请日:2004-11-22

    IPC分类号: G01V3/00

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    Squid detected NMR and MRI at ultralow fields
    2.
    发明授权
    Squid detected NMR and MRI at ultralow fields 有权
    鱿鱼在超低场检测到核磁共振和核磁共振

    公开(公告)号:US07218104B2

    公开(公告)日:2007-05-15

    申请号:US11534757

    申请日:2006-09-25

    IPC分类号: G01V3/00

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    SQUID detected NMR and MRI at ultralow fields
    3.
    发明授权
    SQUID detected NMR and MRI at ultralow fields 有权
    SQUID在超低场检测到NMR和MRI

    公开(公告)号:US06885192B2

    公开(公告)日:2005-04-26

    申请号:US10360823

    申请日:2003-02-06

    IPC分类号: G01R33/36 G01V3/00

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned de superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级超导量子干涉仪(SQUID)磁力计检测millitesla场的预极化。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    SQUID detected NMR and MRI at ultralow fields
    4.
    发明授权
    SQUID detected NMR and MRI at ultralow fields 有权
    SQUID在超低场检测到NMR和MRI

    公开(公告)号:US07116102B2

    公开(公告)日:2006-10-03

    申请号:US11277550

    申请日:2006-03-27

    IPC分类号: G01V3/00

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    NMR and MRI apparatus and method
    5.
    发明授权
    NMR and MRI apparatus and method 失效
    NMR和MRI装置及方法

    公开(公告)号:US07187169B2

    公开(公告)日:2007-03-06

    申请号:US10980984

    申请日:2004-11-03

    IPC分类号: G01V3/00

    CPC分类号: G01R33/326

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. Additional signal to noise benefits are obtained by use of a low noise polarization coil, comprising litz wire or superconducting materials. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 通过使用包含绞合线或超导材料的低噪声极化线圈可以获得额外的噪声有益效果。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    SQUID Detected NRM and MRI at Ultralow Fields
    6.
    发明申请
    SQUID Detected NRM and MRI at Ultralow Fields 有权
    SQUID检测到超声场的NRM和MRI

    公开(公告)号:US20060176054A1

    公开(公告)日:2006-08-10

    申请号:US11277550

    申请日:2006-03-27

    IPC分类号: G01V3/00

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    SQUID DETECTED NMR AND MRI AT ULTRALOW FIELDS
    7.
    发明申请
    SQUID DETECTED NMR AND MRI AT ULTRALOW FIELDS 失效
    超声检测核磁共振和核磁共振检测

    公开(公告)号:US20080074113A1

    公开(公告)日:2008-03-27

    申请号:US11740339

    申请日:2007-04-26

    IPC分类号: G01V3/00

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    Squid detected NMR and MRI at ultralow fields
    8.
    发明申请
    Squid detected NMR and MRI at ultralow fields 有权
    鱿鱼在超低场检测到核磁共振和核磁共振

    公开(公告)号:US20050134262A1

    公开(公告)日:2005-06-23

    申请号:US10995765

    申请日:2004-11-22

    IPC分类号: G01R33/36 G01V3/00

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    SQUID DETECTED NMR AND MRI AT ULTRALOW FIELDS
    9.
    发明申请
    SQUID DETECTED NMR AND MRI AT ULTRALOW FIELDS 有权
    超声检测核磁共振和核磁共振检测

    公开(公告)号:US20070018643A1

    公开(公告)日:2007-01-25

    申请号:US11534757

    申请日:2006-09-25

    IPC分类号: G01V3/00

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。

    NMR and MRI apparatus and method
    10.
    发明申请
    NMR and MRI apparatus and method 失效
    NMR和MRI装置及方法

    公开(公告)号:US20060091881A1

    公开(公告)日:2006-05-04

    申请号:US10980984

    申请日:2004-11-03

    IPC分类号: G01V3/00

    CPC分类号: G01R33/326

    摘要: Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. Additional signal to noise benefits are obtained by use of a low noise polarization coil, comprising litz wire or superconducting materials. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

    摘要翻译: 核磁共振(NMR)信号在微量场中检测。 随后用毫米级直流超导量子干涉仪(SQUID)磁力计检测millitesla场的预偏振。 由于SQUID的灵敏度是频率无关的,所以通过检测极低磁场中的NMR信号来提高信噪比(SNR)和光谱分辨率,即使对于非常不均匀的测量场,NMR线也变得非常窄。 通过使用包含绞合线或超导材料的低噪声极化线圈可以获得额外的噪声有益效果。 超低磁场中的MRI是基于超低场的NMR。 应用梯度磁场,并根据检测到的NMR信号构建图像。