Method and device for MR tomography

Details Method and device for MR tomography Method and device for MR tomography

1988-01-11

1989-04-25

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

048251607

ABSTRACT:
The known method of determining the longitudinal and possibly the transverse relaxation time requires comparatively long repetition times, resulting in comparatively long measurement times. In accordance with the invention, each sequence comprises at least two subsequences, each of which contains at least one r.f. pulse, the repetition times being different and so short that the longitudinal magnetization has not yet reached its original value when the next sub-sequence commences. The invention enables the formation of T1-weighted, and possibly T2-weighted, tomograms for notably medical diagnostics.

REFERENCES:
patent: 4470014 (1984-09-01), Levitt et al.
patent: 4471305 (1984-09-01), Crooks et al.
patent: 4714081 (1987-12-01), Dumoulin et al.
patent: 4721912 (1988-01-01), Kaufman et al.

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