Rapid NMR imaging system

Details Rapid NMR imaging system Rapid NMR imaging system

1986-08-06

1988-05-31

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

047484101

ABSTRACT:
The magnetic resonance activity of a region of a volume is imaged using a time varying gradient whose integral provides a constant velocity spiral in the spatial frequency domain. To provide high fidelity for relatively low values of T.sub.2, high SNR for relatively high values, and a T.sub.2 sensitive image, the spiral is retraced back to the origin. The gradient requirements are minimized using a sequence of interleaved spirals using separate excitations. For further time reduction, only half the spatial frequency domain can be scanned, using inversion excitations to reduce the effects of inhomogeneity.

REFERENCES:
patent: 4602641 (1986-07-01), Feinberg
patent: 4642567 (1987-02-01), Kaplan
patent: 4651096 (1987-03-01), Buonocore

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