Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1993-08-11
1995-02-28
Arana, Louis
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
1286535, G01V 300
Patent
active
053940873
ABSTRACT:
A quadrature multiple coil array (30) includes a plurality of quadrature coil pairs (50.sub.1, 50.sub.2, . . . , 50.sub.n). Each coil pair includes a loop coil (50) or other coil which is sensitive to radio frequency signal components that are perpendicular to the coil and a flat Helmholtz coil (54) or other coil which is sensitive to radio frequency components parallel to the plane of the coil. The coils of each of the quadrature coil pairs are overlapped (56) by an amount which minimizes coupling between the coils. This enables resonance signals to be picked-up concurrently in quadrature by each of the quadrature pairs and be demodulated by a corresponding series of receivers (32.sub.1, 32.sub.2, . . . , 32.sub.n). The data from the overlapping regions to which each quadrature pair is sensitive are reconstructed (36) into image representations (38). The image representations are aligned either automatically (40) or by the operator and displayed on a video monitor (44). The overlapping quadrature pairs can be arranged along a planar substrate or along curved substrates which conform to contours of the anatomy of the subject.
REFERENCES:
patent: 4721913 (1988-01-01), Hyde et al.
patent: 4825162 (1989-04-01), Roemer et al.
patent: 4918388 (1990-04-01), Mehdizadeh et al.
patent: 5196796 (1993-03-01), Misic et al.
patent: 5198786 (1993-03-01), Keren
"The NMR Phased Array", Roemer, et al., Academic Press, Inc. 1990 month unknown Magnetic Resonance in Medicine 16, 192-225 (1990).
"Weighting Functions for Combination of NMR Images Obtained with Multiple Surface Coils", Reykowski, et al., p. 519 SMRM Aug. 1990 9th Ann. Meeting.
"Modification of an MR Receiver for Simultaneous Image Acquisition From Two Channels", Wright, p. 533 SMRM Aug. 1989 8th Ann. Meeting.
"Improvement of SNR at Low Field Strength Using Mutually Decoupled Coils For Simultaneous NMR Imaging", Leussler, et al., p. 724 SMRM Aug. 1990 9th Annual Meeting.
"Volume Imaging with MR Phased Arrays", Hayes, et al. p. 175 SMRM Aug. 1989 8th Annual Meeting.
Arana Louis
Picker International Inc.
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