Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1995-12-26
1997-11-18
Arana, Louis M.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324307, G01V 300
Patent
active
056891865
ABSTRACT:
An off-center NMR image is produced using an EPI pulse sequence. The offset along the readout gradient axis is achieved by shifting the frequency of an RF reference signal used to demodulate the received NMR echo signals. Phase errors produced by the NMR system and by the shifts in reference signal frequency are corrected in "real time" by also shifting the phase of the RF reference signal.
REFERENCES:
patent: 5151656 (1992-09-01), Maier et al.
patent: 5289127 (1994-02-01), Doddrell et al.
patent: 5378985 (1995-01-01), Hinks
patent: 5539311 (1996-07-01), Takiguchi et al.
patent: 5541513 (1996-07-01), Maier
Epstein Frederick Howard
Licato Paul E.
Maier Joseph Kenneth
Ploetz Lawrence Edward
Zhou Xiaohong
Arana Louis M.
General Electric Company
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