Method and apparatus to correct for a phase error in central sec

Details Method and apparatus to correct for a phase error in central sec Method and apparatus to correct for a phase error in central sec

1988-01-11

1989-05-16

Noland, Tom

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324312, G01R 3320

Patent

active

048313297

ABSTRACT:
A method and related apparatus are provided for correcting for a phase error in MRI observed values which represent a scan line which passes through the origin of Fourier space. The phase error is estimated by calculating the phase of the sum of the observed values. The observed values are then modified as a function of the estimated phase error. To minimize the effect of T.sub.2 decay, the phase error may be estimated by calculating the phase of the sum of the product of each pair of observed values on the scan line which have been relocated symmetrically, one on each side of the Fourier space origin.

REFERENCES:
patent: 4706027 (1987-11-01), Hughes
patent: 4736160 (1988-04-01), Sano et al.
patent: 4745364 (1988-05-01), Hatanaka

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