Method of three-dimensional NMR imaging using selective excitati

Details Method of three-dimensional NMR imaging using selective excitati Method of three-dimensional NMR imaging using selective excitati

1982-04-05

1984-02-14

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324311, G01R 3308

Patent

active

044319681

ABSTRACT:
Selective excitation is used to define a thick planar slab of excited nuclear spins in a nuclear magnetic resonance (NMR) imaging sample. The thick slab is selected such that the excited spins are contained well within the optimum sensitive region defined by the radio frequency (RF) transmitter and receiver coils. Three-dimensional spatial information of an NMR imaging parameter, such as nuclear spin density or nuclear spin relaxation time, is collected simultaneously from the excited slab and can be used to construct a series of several tomographic section images of the slab. The spatial information is encoded in the NMR signal by application of pulsed gradient magnetic fields subsequent to excitation. Image picture information is obtained from the NMR signals via three-dimensional Fourier transformation.

REFERENCES:
patent: 4284948 (1981-08-01), Young
patent: 4315216 (1982-02-01), Clow

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