Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1978-07-20
1981-10-27
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324307, G01N 2700
Patent
active
042976375
ABSTRACT:
Densities of resonant nuclei within elemental volumes along a line are measured using the nuclear magnetic resonance phenomenon called "spin echo." A first planar volume of nuclei is selectively excited to nutate spins by approximately 90.degree.. Thereafter a second planar volume of nuclei, transverse to the first planar volume, is selectively excited to nutate spins by approximately 180.degree.. The nuclei in the line volume common to both of the planar volumes thereafter generate characteristic spin echo signals. A magnetic gradient is established along this line volume during the spin echo read out so that the resultant spin echo signals can be processed to determine the respective densities of resonant nuclei along the line volume. Special pulsing sequences for rapidly effecting measurement of successive multiple line volumes and suitable apparatus for effecting such sequences are also described.
REFERENCES:
patent: 3128425 (1964-04-07), Codrington
patent: 3213355 (1965-10-01), Woessner
patent: 3651396 (1972-03-01), Hewitt et al.
patent: 3781650 (1973-12-01), Keller
patent: 3789832 (1974-02-01), Damadian
patent: 3812418 (1974-05-01), Tschopp
patent: 3821636 (1974-06-01), Bozanic
patent: 3932805 (1976-01-01), Abe et al.
patent: 3975675 (1976-08-01), Dunand et al.
patent: 3999118 (1976-12-01), Hoult
patent: 4015196 (1977-03-01), Moore et al.
patent: 4021726 (1977-05-01), Garroway et al.
patent: 4034191 (1977-07-01), Tomlinson et al.
patent: 4068161 (1978-01-01), Ernst
patent: 4070611 (1978-01-01), Ernst
patent: 4087738 (1978-05-01), Van Degrift et al.
patent: 4095168 (1978-06-01), Hlavka
E. R. Andrew, "Zeumatography", IVth Ampere International Summer School, Sep. 1976.
R. Damadian et al., "NMR in Cancer: XVI. Fonar Image of the Live Human Body", Physiol. Chem & Phys. 9, (1977), pp. 98-108.
P. Mansfield, Multi-Planar Image Formation Using NMR Spin Echoes, Journal of Physics C, vol. 10, No. 3, pp. L55-L58, Feb. 14, 1977.
G. N. Holland et al., "A Colour Display Technique for NMR Imaging", J. of Physics E., 10, (1977), pp. 714-716.
T. Baines et al., "An Improved Picture Display for NMR Imaging", Journal of Physics E: Scientific Instruments, 9, (1976), pp. 809-811.
P. C. Lauterbur, "Image Formation by Induced Local Internations: Examples Employing Nuclear Magnetic Resonance", Nature, vol. 242, Mar. 16, 1973, pp. 190-191.
L. Minkoff et al., "NMR in Cancer: XVII. Dewar for a 53-Inch Superconducting NMR Magnet", Physiol. Chem. & Phys. 9, (1977), pp. 101-109.
Ros Herman, "NMR Makes Waves in Medical Equipment Companies", New Scientist, Jan. 12, 1978, p. 67.
R. Damadian et al., "Field Focusing Nuclear Magnetic Resonance (FONAR): Visualization of a Tumor in a Live Animal", Science, vol. 194, Dec. 24, 1976, pp. 1430-1431.
L. E. Crooks et al., "Tomographic Imaging with Nuclear Magnetic Resonance", Investigative Radiology 13, 63, Jan.-Feb. 1978.
W. S. Hinshaw et al., "Radiographic Thin-Section Image of the Human Wristby Nuclear Magnetic Resonance", Nature, vol. 270, 22/29, Dec. 1977, pp. 722-723.
W. S. Hinshaw, "Image Formation by Nuclear Magnetic Resonance: The Sensitive-Point Method", J. of Applied Physics, vol. 47, No. 8, Aug. 1976, pp. 3709-3721.
T. C. Farrar et al., "Pulse and Fourier Transform NMR -Introduction to Theory and Methods", Academic Press, 1971, New York, pp. 1-33.
E. R. Andrew et al., "NMR Images by the Multiple Sensitive Point Method: Application to Larger Biological Systems", Phys. Med. Biol., 1977, vol. 22, No. 5, pp. 971-974.
A. Kumar et al., "NMR Fourier Zeugmatography", J. Magnetic Resonance 18, 69-83, (1975).
P. C. Lauterbur et al., "Magnetic Resonance Zeugmatography", 18th Amper. Conf. 1974.
P. Mansfield et al., "Diffraction and Microscopy in Solids and Liquids by NMR", 18th Ampere Conference, 1974, pp. 431-432.
W. S. Hinshaw et al., "Display of Cross Sectional Anatomy by Nuclear Magnetic Resonance Imaging", British Journal of Radiology, 51, Apr. 1978, pp. 273-280.
P. Mansfield et al., "Biological and Medical Imaging by NMR", Journal of Magnetic Resonance 29, pp. 355-373, (1978).
P. Mansfield et al., "Planar Spin Imaging by NMR", Journal of Magnetic Resonance 27, pp. 101-119.
G. N. Holland et al., "Communications", Journal of Magnetic Resonance 38, pp. 133-136, (1977).
P. C. Lauterbur, "Magnetic Resonance Zeugmatography".
P. C. Lauterbur, "Flow Measurements by NMR Zeugmatography", Oct. 24, 1973.
P. C. Lauterbur, "Stable Isotope Distributions by NMR Zeugmatography", Proceedings of the First International Conference on Stable Isotopes in Chemistry, Biology, and Medicine, Conf-730525, May 9-18, 1973, pp. 255-260.
P. C. Lauterbur et al., "ESR Zeugmatography-Distributions of Unpaired Electrons within Objects", Gordon Conference on Magnetic Resonance, Aug. 12-16, 1974.
P. C. Lauterbur et al., "In Vivo Studies of Cancer of NMR Zeugmatography", Gordon Conference on Magnetic Resonance, Aug. 12-16, 1974.
P. C. Lauterbur, "Reconstruction in Zeugmatography--The Spatial Resolution of Magnetic Resonance Signals", International Workshop on Three-Dimensional Image Reconstruction Techniques, Jul. 16-19, 1974.
A. N. Garroway, "Velocity Profile Measurements by NMR", 18th Ampere Conference, 1974, pp. 435-436.
W. S. Hinshaw, "The Application of Time Dependent Field Gradients to NMR Spin Mapping", 18th Ampere Conference, 1974, pp. 433-434.
J. M. S. Hutchinson et al., "In Vivo Imaging of Body Structures Using Proton Resonance", 18th Ampere Conference 1974, pp. 283-284.
P. Mansfield et al., "Line Scan Proton Spin Imaging in Biological Structures by NMR", Phys. Med. Biol., 1976, vol. 21, No. 5, pp. 847-852.
P. K. Grannel, "NMR Body Images", Physics Bulletin, Mar. 1976, pp. 95-96.
P. C. Lauterbur et al., "Zeugmatographic High Resolution Nuclear Magnetic Resonance Spectroscopy, Images of Chemical Inhomogeneity within Macroscopic Objects", American Chemical Society Journal, 97:23, Nov. 12, 1975, pp. 6866-6868.
P. Mansfield et al., "Diffraction and Microscopy in Solids and Liquids by NMR", Physical Review B, vol. 12, No. 9, Nov. 1, 1975, pp. 3618-3634.
P. Mansfield et al., "Fast Scan Proton Density Imaging by NMR", J. of Physics E, vol. 9, 1976, pp. 271-278.
P. C. Lauterbur, "Bibliography on Magnetic Resonance Zeugmatography", Jun. 3, 1975, pp. 1-2.
A. N. Garroway et al., "Image Formation in NMR by a Selective Irradiative Process", J. Phys. C: vol. 7, 1974, pp. 457-462.
P. Mansfield et al., "Medical Imaging by NMR", British Journal of Radiology 50, 1977, pp. 188-194.
D. I. Hoult, "Zeugmatography: A Criticism of the Concept of a Selective Pulse in the Presence of a Field Gradient", Journal of Magnetic Resonance 26, 165-167, (1977).
P. Mansfield et al., "Planar Spin Imaging by NMR", J. Phys. C: Solid State Phys., vol. 9, 1976, pp. L409-L412.
P. Mansfield, "Proton Spin Imaging by Nuclear Magnetic Resonance", Contemporary Physics, vol. 17, No. 6, 1976, pp. 553-576.
Arakawa Mitsuaki
Crooks Lawrence E.
Hoenninger, III John C.
Nixon Larry S.
The Regents of the University of California
Tokar Michael J.
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