Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1995-08-02
1997-02-04
Arana, Louis M.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324307, 324322, 1286532, G01R 3320
Patent
active
056002440
ABSTRACT:
An MR method is presented for determining the nuclear magnetization distribution in an examination zone, the image data acquired during an MR examination by means of a surface coil arrangement, comprising at least one coil and exhibiting a locally inhomogeneous sensitivity, being corrected on the basis of auxiliary values derived from data acquired by means of a body coil arrangement having a locally at least approximately homogeneous sensitivity. Improved reconstruction is achieved in that, in addition to the MR examination, a respective MR auxiliary measurement is performed by means of the surface coil arrangement as well as by means of the body coil arrangement, that the two MR auxiliary measurements are carried out temporally separated from one another and from the MR examination, that during the two MR auxiliary measurements the magnetic fields acting on the examination zone exhibit the same variation in time, and that the auxiliary values are derived from the data acquired during the two MR auxiliary measurements.
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patent: 5208534 (1993-05-01), Okamoto et al.
"Going Beyond the SNR Performance of a QD Volume Coil With a Multiple Differential Surface Coil", by K. Okamoto et al, Jul. 1993, p. 4042.
Carlsen Ingwer C.
Jensen Jens D.
Arana Louis M.
Phillips Roger C.
Slobod Jack D.
U.S. Philips Corporation
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