US3873909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyromagnetic apparatus employing computer means for correcting its operating parameters
Assignee: Varian Medical Systems Inc
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Filing: 1967-08-21
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Granted: 1975-03-25
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Expires: 1987-08-21
Abstract
Abstract A gyromagnetic resonance spectrometer is disclosed which employs a computer for correcting its operating parameters. The gyromagnetic resonance spectrometer includes means for exciting and detecting gyromagnetic resonance of a sample of matter to be investigated in a polarizing magnetic field. The output spectral data from the spectrometer are fed to a computer. The computer includes a memory and a logic unit programmed to process the data stored in the memory according to a pre-determined program. The computer includes programs for causing certain resonance determinative operating parameters of the spectrometer to be varied in certain ways to cause the output spectral data of the spectrometer to vary accordingly. The spectral data are stored in the memory of the computer and the computer processes the stored data to derive certain corrective outputs which are fed from the computer to the spectrometer for correcting the operating resonance determinative parameters of the spectrometer to yield corrected resonance spectral data. The computer may be programmed to correct any one or more of the following operating parameters of the spectrometer: field strength and homogeneity of the polarizing magnetic field, phase and/or frequency of radio frequency resonance exciting field, intensity of the radio frequency resonance exciting field, rate at which the gyromagnetic ratio is swept in the spectrometer to obtain output spectral data, time constants of filter circuits employed in the receiver of the spectrometer, frequencies and intensities of radio frequency energy applied to the sample in performing certain double resonance analysis, sample spinning rate for averaging gradients of the polarizing field, and intensity of the polarizing magnetic field. The computer may use any one of a number of different methods for deriving the corrective outputs for correcting the operating parameters of the spectrometer.
Inventors
- 👤 Richard R Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:12
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; G01R33/48; G01R33/58; G01N; G01N24/00; G01R33/28; G01R33/38; G01R33/387; G01R33/3875; G01R33/389; G01R33/46
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
In a gyromagnetic resonance apparatus, means forming a gyromagnetic resonance spectrometer having certain operating parameters for exciting and detecting gyromagnetic resonance of a sample of matter to be investigated in a polarizing magnetic field to obtain gyromagnetic resonance data, means forming a computer having a memory in which to store resonance data and for performing logic operations on the stored data, means for feeding the gyromagnetic resonance data to said computer means for storage in the memory, the improvement comprising, means for processing said stored resonance data to derive an output for correcting at least one of the operating parameters of said gyromagnetic resonance spectrometer, and means for feeding the corrective output to said gyromagnetic resonance spectrometer for correcting an operating parameter thereof to obtain corrected gyromagnetic resonance spectral data.
Claim 2
Dependent Claim
130 words
In a gyromagnetic resonance apparatus, means forming a gyromagnetic resonance spectrometer having certain operating parameters for exciting and detecting gyromagnetic resonance of a sample of matter to be investigated in a polarizing magnetic field to obtain gyromagnetic resonance data, means forming a computer having a memory in which to store resonance data and for performing logic operations on the stored data, means for feeding the gyromagnetic resonance data to said computer means for storage in the memory, the improvement comprising, means for processing said stored resonance data to derive an output for correcting at least one of the operating parameters of said gyromagnetic resonance spectrometer, and means for feeding the corrective output to said gyromagnetic resonance spectrometer for correcting an operating parameter thereof to obtain corrected gyromagnetic resonance spectral data.
Claim 3
Dependent Claim
105 words
The apparatus of claim 1 wherein the operating parameters include, homogeneity of the polarizing magnetic field, field strength of the polarizing magnetic field, frequency of r.f. energy employed to excite resonance, stability of the phase of the radio frequency energy applied to excite the sample, strength of the radio frequency field applied for exciting resonance of the sample, rate at which the gyromagnetic ratio is swept for scanning resonance of the sample, time constant of a resonance receiving channel, frequency of double resonance radio frequency energy applied to the sample, intensity of double resonance radio frequency energy applied to the sample, and, sample spinning rate.
Claim 4
Dependent Claim
76 words
The apparatus of claim 1 wherein said computer means includes, means for causing at least one of the operating parameters of said spectrometer means to vary according to a predetermined program and wherein said means for processing the stored data to derive the corrective output includes means for processing the stored data resulting from varying the operating parameter of said spectrometer to determine an inflection value in the stored resonance data for deriving the corrective output.
Claim 5
Dependent Claim
89 words
The apparatus of claim 1 wherein said computer means includes means for causing at least two interrelated resonance data determinative operating paramEters of said spectrometer to take a succession of different sets of values corresponding to coordinates of a succession of points in a grid of the interrelated parameters, and wherein said means for processing the stored resonance data to derive the corrective output includes, means for processing the stored data resulting from the sets of values for the operating parameters of said spectrometer to determine the corrective output.
Claim 6
Dependent Claim
77 words
The apparatus of claim 1 wherein said computer means includes, means for causing at least one of the operating parameters of said spectrometer means to be varied according to a predetermined program, and wherein said means for processing the stored data to derive the corrective output includes means for comparing the stored resonance data resulting from varying the operating parameter with stored resonance data resulting from prior variations of the operating parameter to derive the corrective output.
Claim 7
Independent Claim
102 words
A method for automatically correcting at least one operating parameter of a gyromagnetic resonance spectrometer comprising the steps of, causing the spectrometer to excite and detect gyromagnetic resonance of the sample in a polarizing magnetic field to obtain resonance data, storing the resonance data in a memory, varying at least one of the resonance data determinative operating parameters of the spectrometer, processing the stored resonance data to derive a corrective output, and causing the corrective output to automatically change a value of at least one of the operating parameters of the spectrometer to automatically correct subsequent resonance data obtained from the spectrometer.
Claim 8
Independent Claim
102 words
A method for automatically correcting at least one operating parameter of a gyromagnetic resonance spectrometer comprising the steps of, causing the spectrometer to excite and detect gyromagnetic resonance of the sample in a polarizing magnetic field to obtain resonance data, storing the resonance data in a memory, varying at least one of the resonance data determinative operating parameters of the spectrometer, processing the stored resonance data to derive a corrective output, and causing the corrective output to automatically change a value of at least one of the operating parameters of the spectrometer to automatically correct subsequent resonance data obtained from the spectrometer.
Claim 9
Dependent Claim
104 words
The method of claim 6 including the step of, varying at least a second interrelated resonance data determinative operating parameter of the spectrometer which is interrelated to the first mentioned varied operating parameter, causing the varied first and second operating parameters to take different sets of values corresponding to coordinates of a succession of points in a grid of the interrelated parameters, and wherein the step of processing the stored resonance data to derive the corrective output includes processing the resonance data resulting from the set of values of the varied first and second operating parameters of the spectrometer to determine the corrective output.
Claim 10
Dependent Claim
32 words
The apparatus of claim 1 wherein said computer means comprises a digital computer, and means for digitizing the resonance data for storage as digital data in the said memory of said computer.
Claim 11
Dependent Claim
105 words
In a spectrometer apparatus, means forming a spectrometer having certain operating parameters for obtaining spectral data, means forming a computer having a memory in which to store spectral data and for performing logic operations on the stored spectral data, means for feeding the spectral data derived from the spectrometer to said computer means for storage in the memory, THE IMPROVEMENT COMPRISING, means for processing the stored spectral data to derive an output for correcting at least one of the operating parameters of said spectrometer, and means for feeding the corrective output to said spectrometer for correcting an operating parameter thereof to obtain corrected spectral data.
Claim 12
Dependent Claim
105 words
In a spectrometer apparatus, means forming a spectrometer having certain operating parameters for obtaining spectral data, means forming a computer having a memory in which to store spectral data and for performing logic operations on the stored spectral data, means for feeding the spectral data derived from the spectrometer to said computer means for storage in the memory, THE IMPROVEMENT COMPRISING, means for processing the stored spectral data to derive an output for correcting at least one of the operating parameters of said spectrometer, and means for feeding the corrective output to said spectrometer for correcting an operating parameter thereof to obtain corrected spectral data.
References Cited (Backward Citations)
US3012139A
Cited
US3297860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |