Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1988-10-20
1990-03-27
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324309, G01R 3320
Patent
active
049124137
ABSTRACT:
An incomplete set of magnetic resonance image data is collected and stored in a view memory (40). The incomplete set of image data includes a central or first set of data values (42, 42') and half of the remaining data values (44, 44'). A symmetric data set which fills the other remaining half (46, 46') of the data values is generated (90) by determining the complex conjugate of each value of the incomplete data set. The incomplete and symmetric data sets are Fourier transformed (64, 94) to create first and second images f.sub.1 (x,y) and f.sub.2 (x,y). The first and second images are multiplied (100, 104) by conjugately symmetric phase correction values e.sup.i.phi.(x,y) and e.sup.-i.phi.(x,y) from a phase correction memory (70) to produce phase corrected images. The first and second phase corrected image representations are summed (110) and displayed (114). The phase correction values .phi.(x,y) may be derived (68) from the first image or from a phase image (86) derived (80, 82, 84) from a central or other portion of the acquired incomplete image data set.
REFERENCES:
patent: 4684891 (1987-08-01), Feinberg
patent: 4689567 (1987-08-01), Maudsley
patent: 4694251 (1987-09-01), Yoshitome et al.
patent: 4728893 (1988-03-01), Feinberg
patent: 4733188 (1988-03-01), Sekihara et al.
patent: 4740748 (1988-04-01), Rzedzian
patent: 4745364 (1988-05-01), Hatanaka
patent: 4748410 (1988-05-01), Macovski
patent: 4818942 (1989-04-01), Rzedzian
"Faster MR Imaging Imaging with Half the Data" by Margosian et al, Health Care Instrumentation, vol. 1, No. 6, 1986, pp. 195-197.
"Faster MR Imaging-Imaging with Half the Data" by Paul Margosian, Society of Magnetic Resonance in Medicine, 4th Annual Meeting, Aug. 19-23, 1986, London, pp. 1024-1025.
"Field Inhomogeneity Correction and Data Processing for Spectroscopic Imaging" by Madusley et al., Magnetic Resonance in Medicine, 2, 1985, pp. 218-233.
"Direct Fourier Transform NMR Tomography with Modified Kumar-Welti-Ernst (MKWE) Method" by Song et al., IEEE Transactions on Nuclear Science, vol. NS-29, No. 1, Feb. 1982.
"Magnetic Field Measurement by NMR Imaging" by Maudsley et al., The Institute of Physics, 1982, pp. 216-220.
"MR Images from on Quarter of the Data: Combination of Half Fourier Methods with a Linear Recursive Data Extrapolation" by P. Margosian, Book of Abstracts, Society of Magnetic Resonance in Medicine, Annual Meeting, Aug. 17-21, 1987, NY.
"A New Method of Measuring Static Field Distribution Using Modified Fourier NMR Imaging" by Sekihara et al., The Institute of Physics, 1985, pp. 224-227.
"RARE Imaging: A Fast Imaging Method for Clinical MR" by Henning et al., Mag. Res. in Medicine, 3, pp. 823-833 (1986).
"Phase Encoded, Rapid, Multiple Echo (PERME) Nuclear Magnetic Resonance Imaging" by Lawton, Aug. 1985.
"Exploiting the Stimulated Echo in NMR Imaging" by Sattin for NVR, Picker Clinical Science Center, vol. 2, No. 1, Feb. 1987, pp. 18-21.
DeMeester Gordon D.
Holland G. Neil
Patrick John L.
Picker International Inc.
Tokar Michael J.
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