Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1988-10-11
1989-10-31
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324307, G01R 3320
Patent
active
048780219
ABSTRACT:
Methods and Apparatus using frequency modulated RF pulses for spatially localizing spectroscopic data. Three different pairs of 90 degree RF pulses are applied during the application of three different gradient pulses to excite and dephase unwanted volumes. A selected volume of interest (VOI) now contains unexcited and non-dephased spins. A 90 degree RF pulse is applied to excite the spins in the selected VOI and signals are acquired from the selected VOI.
REFERENCES:
patent: 4516582 (1985-05-01), Redington
patent: 4532473 (1985-07-01), Wehrli
patent: 4563647 (1986-01-01), Young
patent: 4587488 (1986-05-01), Young
patent: 4613949 (1986-09-01), Glover
patent: 4683432 (1987-07-01), Young
patent: 4733183 (1988-03-01), Young
patent: 4771242 (1988-09-01), Lampman
Joseph Granot, COMMUNICATIONS: Selected Volume Excitation Using Stimulated Echoes (VEST). Applications to Spatially Localized Spectroscopy and Imaging, Journal of Magnetic Resonance, 70, 488-492 (1986).
Dietmar Kunz, "Frequency-Modulated Radiofrequency Pulses in Spin-Echo and Stimulated-Echo Experiments", Magnetic Resonance in Medecene, 4, 129-136 (1987).
Dietmar Kunz, "Use of Frequency-Modulated Radiofrequency Pulses in MR Imaging Experiments", Magnetic Resonance in Medicine, 3, 377-384 (1986).
M. Robin Bendall and David T. Pegg, "Comparison of Depth Pulse Sequences with Composite Pulses for Spatial Selection in in vitro NMR", Journal of Magnetic Resonance, 63, 494-503 (1985).
Raymond Damadian, Lawrence Minkoff, Michael Goldsmith, Michael Stanford and Jason Koutcher, "Field Focusing Nuclear Magnetic Resonance (FONAR): Visualization of a Tumor in a Live Animal", Science, Vol. 194, Dec. 24, 1976, pp. 1430-1432.
Katherine N. Scott, H. Ralph Brooker, Jeffrey R. Fitzsimmons, Harold F. Bennett, and Rodney C. Mich, "Spatial Localization of .sup.31 P Nuclear Magnetic Resonance Signal by the Sensitive Point Method", Journal of Magnetic Resonance, 50, 339-344 (1982).
R. E. Gordon and R. J. Ordidge, "Volume Selection for High Resolution NMR Studies", Oxford Research Systems Limited, pp. 272-273.
W. P. Aue, S. Muller, T. A. Cross, and J. Seelig, "Volume-Selective Excitation. A Novel Approach to Topical NMR", Journal of Magnetic Resonance, 56, 350-354 (1984).
Depth Pulse Sequences for Surface Coils: Spatial Localization and T.sub.1 Measurements; by Thian C. NG, Jerry D. Glickson and M. Robin Bendall; Magnetic Resonance in Medicine 1, 450-462 (1984).
Elscint Ltd.
Tokar Michael J.
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