Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2007-01-23
2007-01-23
Arana, Louis M. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S307000
Reexamination Certificate
active
11074964
ABSTRACT:
The subject invention pertains to methods and apparatus for producing excitation for magnetic resonance imaging (MRI) from a plurality of local exciting elements such that each local exciting element's excitation is independent of the other local exciting elements' excitation. The methods and apparatus of the subject invention can be utilized in magnetic resonance imaging (MRI) and in magnetic resonance spectroscopy (MRS), where MRI produces a magnitude for each pixel that combines many frequency components, typically for magnitude images, and MRS produces a spectrum of outputs over a range of frequencies for each pixel, typically a spectral output. The subject method and apparatus can be utilized for exciting proton, and/or other imaging materials relating to spin magnetization, such as, but not limited to, phosphorous, carbon, and fluorine. In a specific embodiment, the subject invention achieves the independence of the local exciting elements' excitations via serial means, such that excitation is produced by each local exciting element at a different time than the other local exiting elements.
REFERENCES:
patent: 4682112 (1987-07-01), Beer
patent: 4689563 (1987-08-01), Bottomley et al.
patent: 4825162 (1989-04-01), Roemer et al.
patent: 5144243 (1992-09-01), Nakabayashi et al.
patent: 5572130 (1996-11-01), Ratzel
patent: 6192263 (2001-02-01), Ma
patent: 2003/0020475 (2003-01-01), Leussler
patent: WO 03/107027 (2003-12-01), None
Roemer PB, Edelstein WA, Hayes CE, Souza SP, Mueller OM,. “The NMR Phased Array”. Magnetic Resonance in Medicine vol. 16, pp. 192-225 (1990).
Katscher U et al. “Transmit SENSE”. Magnetic Resonance in Medicine, Col. 49, pp. 144-150 (2003).
Beck B et al. “Progress in high field MRI at the University of Florida”. Magnetic Resonance Materials in Physics, Biology and Medicone. vol. 13, pp. 152-157 (2002).
Beck, B. L. et al. “Observation of Significant Signal Voids in Images of Large Biological Samples at 11.1 T”Magnetic Resonance in Medicine, 2004, pp. 1103-1107, vol. 51.
Bottomley, P. A. et al. “Phosphate Metabolite Imaging and Concentration Measurements in Human Heart by Nuclear Magnetic Resonance”Magnetic Resonance in Medicine, 1990, pp. 425-434, vol. 14.
Collins, C. M. et al. “SAR and B1Field Distributions in a Heterogeneous Human Head Model within a Birdcage Coil”Magnetic Resonance in Medicine, 1998, pp. 847-856, vol. 40.
Hayes, C. E. et al. “Noise Correlations in Data Simultaneously Acquired from Multiple Surface Coil Arrays”Magnetic Resonance in Medicine, 1990, pp. 181-191, vol. 16.
Hoult, D. I. et al. “Sensitivity and Power Deposition in a High-Field Imaging Experiment”Journal of Magnetic Resonance Imaging, 2000, pp. 46-67, vol. 12.
Ibrahim, T.S. et al. “Dielectric resonances and B1field inhomogenetiy in UHFMRI: computational analysis and experimental findings”Magnetic Resonance Imaging, 2001, pp. 219-226, vol. 19.
Katscher, U. et al. “Transmit SENSE”Magnetic Resonance in Medicine, 2003, pp. 144-150, vol. 49.
King, S. B. et al. “MR Spectroscopy Using Multi-Ring Surface Coils”Magnetic Resonance in Medicine, 1999, pp. 655-664, vol. 42.
Suits, B. H. et al. “Surface and Gradiometer Coils near a Conducting Body: The Lift-off Effect”Journal of Magnetic Resonance, 1998, pp. 373-379, vol. 135.
Vaughan, J. T. et al. “7T vs. 4T: RF Power, Homogeneity, and Signal-to-Noise Comparison in Head Images”Magnetic Resonance in Medicine, 2001, pp. 24-30, vol. 46.
Arana Louis M.
Invivo Corporation
Saliwanchik Lloyd & Saliwanchik
LandOfFree
Method and apparatus for serial array excitation for high... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for serial array excitation for high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for serial array excitation for high... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3824384