Magnetic resonance imaging and spectroscopy using a linear class

Details Magnetic resonance imaging and spectroscopy using a linear class Magnetic resonance imaging and spectroscopy using a linear class

1990-03-22

1992-04-14

Williams, Hezron E.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

051051524

ABSTRACT:
Disclosed is a method of generating a linear large tip-angle selective excitation pulse for magnetic resonance imaging using a linear Fourier transform analysis. An inherently refocused small tip-angle excitation pulse which produces a rotation about an axis is first defined. Then a sequence of the small tip-angle excitation pulses is produced and concatenated whereby the sum of the tip angles produced by the sequence of pulses results in a desired net large tip-angle. The small tip-angle pulses have a Hermitian RF weighted k-space trajectory. The tip angle is the Fourier transform of the weighted k-space trajectory.

REFERENCES:
patent: 4672319 (1987-01-01), Nishimura
patent: 4985677 (1991-01-01), Pauly
patent: 4999580 (1991-03-01), Meyer et al.

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