Method for magnetic resonance image acquisition and reconstructi

Details Method for magnetic resonance image acquisition and reconstructi Method for magnetic resonance image acquisition and reconstructi

1996-11-14

1998-10-13

Barlow, Jr., John E.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324309, A61B 5055

Patent

active

058217517

ABSTRACT:
For obtaining image information from a subject, in an excitation phase nuclear resonance signals are excited with wavelet-encoding by emitting a radio-frequency pulse under the influence of a gradient in a first direction, the pulse having an envelope that corresponds to the Fourier transforms of a wavelet function. In addition, a layer selection is achieved by the application of an oscillating gradient in a second direction. In a readout phase, a gradient echo signal is sampled under the influence of a readout gradient in a third direction. The pulse sequence can be repeated with a repetition time that is shorter than the longitudinal and transverse relaxation time, so that a steady state arises.

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"Image Formation by Nuclear Magnetic Resonance: The Sensitive-Point Method," Hinshaw, J. App. Phys., vol. 47, No. 8, pp. 3709-3721, Aug. 19, 1976.

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