Time domain filtering for NMR phased array imaging

Details Time domain filtering for NMR phased array imaging Time domain filtering for NMR phased array imaging

1990-08-20

1992-02-04

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324318, 324322, G01R 3320

Patent

active

050862758

ABSTRACT:
A method and apparatus for combining NMR response data of a sample from a plurality of closely spaced RF receiver coils of an NMR phased array in the time domain to form a composite NMR image wherein each of the RF receiver coils receives a different respective one of a plurality of NMR response signals, each of which is evoked from a portion of the sample within a field of a respective one of the receiver coils. The response signals are conditioned to develop a plurality of data point signals corresponding to the magnitude of each of the respective response signals from each of the receiver coils at successive time intervals. The data point signals are convolved by a time domain representation of a field map of the respective one of the receiver coils generating the corresponding one of the response signals. The convolved signals are combined on a time domain point-by-point basis to produce a time domain representation of the composite NMR image of the sample.

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R. Hamming, "Digital Filters", Prentice-Hall, 1989, pp. 102-105.

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