Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1997-03-06
1998-06-16
O'Shea, Sandra L.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
G01R 3320
Patent
active
057676763
ABSTRACT:
In an MR spectroscopy method nuclear magnetization of a plurality of voxels present at an area of intersection of two slices is simultaneously excited by repeated sequences, the resultant phase encoding of the voxels is varied from one sequence to another, and a spectral distribution of nuclear magnetization in the voxels is derived from linear combinations of the MR signals generated in the individual sequences. A method is obtained wherein each sequence a first slice-selective RF pulse is generated in order to excite the transverse magnetization in one or more first slices, and subsequently a second slice-selective RF pulse is generated in order to refocus nuclear magnetization in one or more second slices which intersect the first slices at an angle other than zero, and in the various sequences the MR signals produced by the spin echos in the voxels present at the area of intersection of each first and second slice is detected and used to determine the spectral distribution of the nuclear magnetization.
REFERENCES:
patent: 4480228 (1984-10-01), Bottomley
patent: 4484138 (1984-11-01), Bottomley
patent: 4893080 (1990-01-01), Luyten
"Double-Echo Multislice Proton Spectroscopic Imaging Using Hadamard Slice Encoding" (1980) by Wolfgang Dreher et al, Multi-Slice Proton Spectroscopic Imaging, pp. 596-600.
"Fast Hadamard Spectroscopic Imaging Techniques" (1994) by Gadi Goelmam, Journal of Magnetic Resonance, Series B 104, pp. 212-218.
"Multiple-Line Scanning Spin Density Imaging" (1994) by A.A. Maudsley, Journal of Magnetic Resonance, 41, pp. 112-126.
"Transverse Hadamard Spectroscopic Imaging Technique" (1990) by Gadi Goelman et al, Journal of Magnetic Resonance, 89, pp. 437-454.
"Wavelet-Encoded MR Imaging" (1992) John B. Weaver et al, Magnetic Resonance in Medicine 24(1992) Apr., No. 2, Duluth, MN, US.
Bornert Peter
Schaffter Tobias
Eisenberg Michael
O'Shea Sandra L.
Slobod Jack D.
U.S. Philips Corporation
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