Imaging method and apparatus using nuclear magnetic resonance

Details Imaging method and apparatus using nuclear magnetic resonance Imaging method and apparatus using nuclear magnetic resonance

1984-08-02

1987-07-28

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

046834338

ABSTRACT:
An NMR imaging apparatus and method for detecting a nuclear spin resonance signal from an object, which is placed in a magnetic field, to produce images of the object. At an instant when the spins come into phase after the signal detection by a first spin excitation, RF magnetic field pulses are applied for rotating the direction of the spin to that opposite to the initial state. After that, the spin excitation and the signal direction of second time are conducted to measure the data which are different in the effect of the relaxation time from the first measurements. By repeating these sequences, it is possible to produce a plurality of images such as an intensity image or a relaxation time enhanced image.

REFERENCES:
patent: 4471306 (1984-09-01), Edelstein et al.
patent: 4520828 (1985-06-01), Burl et al.
patent: 4536712 (1985-08-01), Iwaoka et al.
patent: 4587488 (1986-05-01), Young

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