Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2007-08-21
2007-08-21
Arana, Louis M. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S322000, C600S422000
Reexamination Certificate
active
11352770
ABSTRACT:
An array coil to achieve more uniform RF excitation for high field magnetic resonance imaging. In the preferred embodiment, the array coil has a plurality of transmit-composite elements distributed around the object to be imaged. A composite element comprises up to three current loops preferably orthogonal to each another. The array coil has the capability to shape the distribution of all three orthogonal components (x, y, and z) of the RF B1field.
REFERENCES:
patent: 5804969 (1998-09-01), Lian et al.
patent: 6177797 (2001-01-01), Srinivasan
patent: 6313633 (2001-11-01), Boskamp
patent: 6768303 (2004-07-01), Su et al.
patent: 6894496 (2005-05-01), Molyneaux et al.
Alsop et al., “A Spiral Volume Coil for Improved RF Field Homogeneity at High Static Magnetic Field Strength,”MRM, 40: 49-54, 1998.
Berenger, “A Perfectly Matched Layer for the Absorption of Electromagnetic Waves,”Journal of Computational Physics, 114:185-200, 1994.
Collins et al., “Different Excitation and Reception Distributions With a Single-Loop Transmit-Receive Surface Coil Near a Head-Sized Spherical Phantom at 300 MHz,”Magnetic Resonance in Medicine, 47: 1026-1028, 2002.
Foo et al., “Reduction of RF Penetration Effects in High Field Imaging,”Magnetic Resonance in Medicine, 23: 287-301, 1992.
Hoult, “Sensitivity and Power Deposition in a High-Field Imaging Experiment,”Journal of Magnetic Resonance Imaging, 12: 46-67, 2000.
Ibrahim et al., “Effect of RF coil excitation on field inhomogeneity at ultra high fields: A field optimized TEM resonator,”Magnetic Resonance Imaging, 19: 1339-1347, 2001.
Tropp, “Image brightening in samples of high dielectric constant,”Journal of Magnetic Resonance, 167: 12-24, 2004.
Zhu, “Parallel Excitation With an Array of Transmit Coils,”Magnetic Resonance in Medicine, 51: 775-784, 2004.
Wang Dah-Jyuu
Wang Zhiyue J.
Arana Louis M.
Baylor College of Medicine
Fulbright & Jaworski LLP
LandOfFree
RF coil for a highly uniform B1 amplitude for high field MRI does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with RF coil for a highly uniform B1 amplitude for high field MRI, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RF coil for a highly uniform B1 amplitude for high field MRI will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3832434