Testing method and apparatus by use of NMR

Details Testing method and apparatus by use of NMR Testing method and apparatus by use of NMR

1990-03-29

1991-11-12

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01R 3320

Patent

active

050650971

ABSTRACT:
A testing method and apparatus by use of nuclear magnetic resonance measure, at timings influenced and not influenced from chemical shift, nuclear magnetic resonance signals taken from a sample to be tested at least one of whose values of permeability and chemical shift is known and a reference sample both of whose values of permeability and chemical shift and their spatial distribution are uniform thereby to acquire four items of image vector information. Further, the testing method and apparatus take phase differences between the items of image vector information to separately extract the phase component influenced by the permeability distribution and the phase component influenced from the chemical shift.

REFERENCES:
patent: 4719423 (1988-01-01), Vinegar et al.
patent: 4769602 (1988-09-01), Vinegar et al.
patent: 4885539 (1989-12-01), Roemer et al.
Journal of Magnetic Resonance 70, 163-168 (1986).

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