Method and apparatus for simultaneous acquisition of high resolution NMR spectra from multiple samples
First Claim
1. An apparatus for obtaining multiple spectra from a plurality of samples by employment of nuclear magnetic resonance (NMR) spectroscopy, comprising:
- a plurality of coils coupled to and in operable communication with an NMR spectrometer, said coils operable in a transmit mode and receive mode, and individual coils of the plurality of coils are respectively associated with separate ones of the plurality of samples;
at least one switch coupled with the plurality of coils and the NMR spectrometer; and
a controller of the NMR spectrometer coupled with the at least one switch to alternate activation of the plurality of coils for NMR data acquisition of the separate ones of the plurality of samples such that high resolution NMR spectra are able to be acquired from the separate ones of the plurality of samples.
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Accused Products
Abstract
An apparatus for obtaining multiple spectra from a plurality of samples through the use of nuclear magnetic resonance (NMR) spectroscopy. A plurality of microcoils are coupled to and are in operable communication with an NMR spectrometer. The coils are operable in both a transmit mode and a receive mode to transmit RF energy to a sample being analyzed and to receive the return data for analysis by the NMR spectrometer. At least one switch is coupled to the plurality of coils and the NMR spectrometer. A controller for the NMR spectrometer is coupled to the switch and is used to control alternative activation of the coils for NMR data acquisition of multiple samples.
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Citations
37 Claims
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1. An apparatus for obtaining multiple spectra from a plurality of samples by employment of nuclear magnetic resonance (NMR) spectroscopy, comprising:
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a plurality of coils coupled to and in operable communication with an NMR spectrometer, said coils operable in a transmit mode and receive mode, and individual coils of the plurality of coils are respectively associated with separate ones of the plurality of samples;
at least one switch coupled with the plurality of coils and the NMR spectrometer; and
a controller of the NMR spectrometer coupled with the at least one switch to alternate activation of the plurality of coils for NMR data acquisition of the separate ones of the plurality of samples such that high resolution NMR spectra are able to be acquired from the separate ones of the plurality of samples. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 13)
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9. An apparatus for obtaining multiple spectra from a plurality of samples by employment of nuclear magnetic resonance (NMR) spectroscopy, comprising:
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a plurality of coils, said coils are radio frequency (RF) microcoils that are multi-turn solenoidal coils, coupled to and in operable communication with an NMR spectrometer, said coils operable in a transmit mode and receive mode and each of said coils is respectively associated with one of the plurality of samples for analysis by NMR spectroscopy;
at least one switch coupled with the plurality of coils and the NMR spectrometer;
a controller of the NMR spectrometer coupled with the at least one switch to alternate activation of the plurality of coils for NMR data acquisition of multiple samples, the controller controls the at least one switch to activate one coil at a time such that when the one coil is activated each of the other of the plurality of coils are inactive;
an NMR probe in operable communication with the NMR spectrometer in which each of the plurality of RF microcoils are positioned within the NMR probe substantially perpendicular to a magnetic field established by the NMR spectrometer and in which the plurality of RF microcoils are vertically mounted and spaced apart at the probe with alternate ones of the plurality of RF microcoils positioned at approximately 360/n degrees relative to each other about the probe where n=the number of the plurality of microcoils.
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10. An apparatus for obtaining multiple spectra from a plurality of samples by employment of nuclear magnetic resonance (NMR) spectroscopy, comprising:
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a plurality of coils coupled to and in operable communication with an NMR spectrometer, said coils operable in a transmit mode and receive mode and arranged such that the isolation between the coils is less than −
30 dB;
at least one switch coupled with the plurality of coils and the NMR spectrometer; and
a controller of the NMR spectrometer coupled with the at least one switch to alternate activation of the plurality of coils for NMR data acquisition of multiple samples and in which a sampling rate for individual coils of the plurality of coils is increased relative to a single coil by a factor equal to or greater than the number of coils. - View Dependent Claims (11)
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12. An apparatus for obtaining multiple spectra from a plurality of samples by employment of nuclear magnetic resonance (NMR) spectroscopy, comprising:
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a plurality of coils coupled to and in operable communication with an NMR spectrometer, said coils operable in a transmit mode and receive mode;
at least one switch coupled with the plurality of coils and the NMR spectrometer;
a controller of the NMR spectrometer coupled with the at least one switch to alternate activation of the plurality of coils for NMR data acquisition of multiple samples such that high resolution NMR spectra are able to be acquired from the separate ones of the plurality of samples; and
a plurality of coil groups in which separate coils of the plurality of coil groups are activated by nested switches.
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14. An apparatus for obtaining multiple spectra from a plurality of samples by employment of nuclear magnetic resonance (NMR) spectroscopy, comprising:
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a plurality of coils coupled to and in operable communication with an NMR spectrometer, said coils operable in a transmit mode and receive mode;
at least one switch coupled with the plurality of coils and the NMR spectrometer;
a controller of the NMR spectrometer coupled with at least one switch to alternate activation of the plurality of coils for NMR data acquisition of multiple samples;
a plurality of coil groups in which the coil groups each have multiple coils, each of said coils being respectively associated with one of the plurality of samples for analysis by NMR spectroscopy such that high resolution NMR spectra are able to be acquired from the separate ones of the plurality of samples; and
a plurality of high-speed switches in which individual high speed switches are respectively associated with a coil group and are coupled with each of the coils of its associated coil group.
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15. An apparatus for obtaining multiple spectra from a plurality of samples by employment of nuclear magnetic resonance (NMR) spectroscopy, comprising:
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a plurality of coils coupled to and in operable communication with an NMR spectrometer, said coils operable in a transmit mode and receive mode, at least one switch coupled with the plurality of coils and the NMR spectrometer;
a controller of the NMR spectrometer coupled with at least one switch to alternate activation of the plurality of coils for NMR data acquisition of multiple samples;
a plurality of coil groups in which the coil groups each have multiple coils, each of said coils being respectively associated with one of the plurality of samples for analysis by NMR spectroscopy; and
a plurality of high-speed switches in which individual high speed switches are respectively associated with a coil group and are coupled with each of the coils of its associated coil group and in which an input for each of the individual high-speed switches is coupled with an output of at least one slow switch and in which outputs of the high-speed switches are coupled with the coils associated with individual samples. - View Dependent Claims (16, 17, 18, 19)
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20. A method of obtaining multiple spectra from a plurality of samples through nuclear magnetic resonance (NMR) spectroscopy, comprising the steps of.
coupling a plurality of coils which are operable in a transmit mode and a received mode to an NMR spectrometer for operable communication between the coils and the NMR spectrometer; -
respectively associating individual coils of the plurality of coils with separate ones of the plurality of samples;
coupling at least one switch with the plurality of coils and the NMR spectrometer; and
controlling the at least one switch to alternate activation of the plurality of coils for NMR data acquisition of the separate ones of the plurality of samples such that high resolution NMR spectra are able to be acquired from the separate ones of the plurality of samples. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
deactivating the other coil during activation at the pulse sequence and data acquisition period for the one coil. -
23. The method of claim 20 in which the step of controlling includes the step of controlling, by a controller associated with the NMR spectrometer, the at least one switch to activate one coil at a time such that when one coil is activated each of the other of the plurality of coils are inactive.
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24. The method of claim 23 including the step of respectively associating each of the plurality of coils with a corresponding sample of the plurality of samples for analysis by NMR spectroscopy such that multi-dimensional high resolution NMR spectra are able to be acquired from the separate ones of the plurality of samples.
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25. The method of claim 24, including the step of establishing the plurality of coils as radio frequency (RF) microcoils.
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26. The method of claim 25 in which the step of establishing includes the step of establishing each of the RF microcoils as multi-turn solenoidal coils which are less than one millimeter in length.
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27. The method of claim 25 including the steps of providing an NMR probe in operable communication with the NMR spectrometer, and
positioning the plurality of RF microcoils within the NMR probe substantially perpendicular to a magnetic field established by the NMR spectrometer such that isolation is less than − - 30 dB between the RF microcoils.
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28. A method for obtaining multiple spectra from a plurality of samples through nuclear magnetic resonance (NMR) spectroscopy, comprising the steps of:
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coupling a plurality of coils which are operable in a transit mode and a receive mode to an NMR spectrometer for operable communication between the coils and the NMR spectrometer;
coupling at least one switch with the plurality of coils and the NMR spectrometer;
controlling the at least one switch to alternate activation of the plurality of coils for NMR data acquisition of multiple samples, a controller associated with the NMR spectrometer is utilized to control the at least one switch to activate one coil at a time such that when one coil is activated each of the other of the plurality of coils are inactive;
respectively associating each of the plurality of coils with a corresponding sample of the plurality of samples for analysis by NMR spectroscopy;
establishing the plurality of coils as radio frequency (RF) microcoils;
providing an NMR probe in operable communication with the NMR spectrometer;
positioning the plurality of RF microcoils within the NMR probe substantially perpendicular to a magnetic field established by the NMR spectrometer;
vertically spacing the plurality of RF microcoils at the probe; and
positioning alternate ones of the plurality of RF microcoils about the probe at approximately 360/n degrees relative to each other where n=the number of the plurality of microcoils.
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29. A method for obtaining multiple spectra from a plurality of samples through nuclear magnetic resonance (NMR) spectroscopy, comprising the steps of:
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coupling a plurality of coils which are operable in a transmit mode and a receive mode to an NMR spectrometer for operable communication between the coils and the NMR spectrometer;
arranging the plurality of coils such that the isolation between the coils is less than −
30 dB;
coupling at least one switch with the plurality of coils and the NMR spectrometer;
controlling the at least one switch to alternate activation of the plurality coils for NMR data acquisition of multiple samples; and
increasing a sampling rate for individual coils of the plurality of coils, relative to a sampling rate for a single coil, by a factor equal to or greater than the number of coils. - View Dependent Claims (30)
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31. A method for obtaining multiple spectra from a plurality of samples through nuclear magnetic resonance (NMR) spectroscopy, comprising the steps of:
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coupling a plurality of coils which are operable in a transmit mode and a receive mode to an NMR spectrometer for operable communication between the coils and the NMR spectrometer;
coupling at least one switch with the plurality of coils and the NMR spectrometer;
establishing a plurality of coil groups;
activating separate coils of the plurality of coil groups by at least one nested switch; and
controlling the at least one switch to alternate activation of the plurality coils for NMR data acquisition of multiple samples such that high resolution of NMR spectra are able to be acquired from the separate ones of the plurality of samples.
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32. A method for obtaining multiple spectra from a plurality of samples through nuclear magnetic resonance (NMR) spectroscopy, comprising the steps of:
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coupling a plurality of coils which are operable in a transmit mode and a receive mode to an NMR spectrometer for operable communication between the coils and the NMR spectrometer;
coupling at least one switch with the plurality of coils and the NMR spectrometer;
controlling the at least one switch to alternate activation of the plurality coils for NMR data acquisition of multiple samples;
establishing a plurality of coil groups; and
respectively associating each of said coils in the plurality of coil groups with a single sample of the plurality of samples for analysis by NMR spectroscopy such that high resolution NMR spectra are able to be acquired from the separate ones of the plurality of samples. - View Dependent Claims (33)
associating individual high-speed switches with a coil group, and coupling the coils of the coil group with the outputs of the associated high-speed switch for the coil group.
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34. A method for obtaining multiple spectra from a plurality of samples through nuclear magnetic resonance (NMR) spectroscopy, comprising the steps of:
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coupling a plurality of coils which are operable in a transmit mode and a receive mode to an NMR spectrometer for operable communication between the coils and the NMR spectrometer;
coupling at least one switch with the plurality of coils and the NMR spectrometer;
controlling the at least one switch to alternate activation of the plurality coils for NMR data acquisition of multiple samples;
establishing a plurality of coil groups;
respectively associating each of said coils in the plurality of coil groups with a single sample of the plurality of samples for analysis by NMR spectroscopy;
providing a plurality of high-speed switches, said high-speed switches having an input and a plurality of outputs;
associating individual high-speed switches with a coil group;
coupling the coils of the coil group with the outputs of the associated high-speed switch for the coil group;
coupling the input for individual high-speed switches with an assigned output of at least one slow switch; and
coupling an input of the at least one slow switch with the NMR spectrometer. - View Dependent Claims (35, 36, 37)
controlling one of the high-speed switches, when in switched communication with the slow switch, to activate one microcoil at a time of the coil group for the one high-speed switch such that when one microcoil is activated, for NMR data acquisition of a sample associated with the one microcoil, each of the other microcoils of the coil group are inactive.
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Specification