Multiple pulse excitation in NMR imaging

Details Multiple pulse excitation in NMR imaging Multiple pulse excitation in NMR imaging

1984-09-19

1987-06-09

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324312, G01R 3320

Patent

active

046723196

ABSTRACT:
Improved nuclei excitation for NMR applications is provided by employing a sequence of RF pulses for exciting the nuclei. Non-linearities in pulse excitation are compensated by applying at least one additional RF pulse thereby improving slice definition and/or phase characteristics. In one application, one or more initial RF pulses establish an intermediate state for the nuclei from which the nuclei can be tilted to a final desired magnetic moment state by the application of a single RF pulse. The order of applying the magnetic pulses can be reversed when the flip/angle is 180 degrees.

REFERENCES:
patent: 4065714 (1977-12-01), Hill
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patent: 4564813 (1986-01-01), Young et al.
patent: 4613949 (1986-09-01), Glover et al.
M. S. Silver et al., Selective Pulse Creation by Inverse Solution of the Bloch-Riccati Equation, Mag. Res. in Medicine, vol. 1, No. 2, 1984.

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