Patent ID: 6879155
Filing Date: 2005-04-12
Classification: G01R

Abstract:
1. A method for producing an NMR image of a subject which is affected by spin motion, the steps comprising: a) applying a polarizing magnetic field to the subject; b) applying an RF excitation field to the subject to produce transverse magnetization of spins in an excitation column oriented along an excitation axis; c) applying a magnetic field gradient to the subject to motion sensitize the transverse magnetization, the magnetic field gradient waveform being shaped to contain a range of frequencies that includes a frequency at which the transversely magnetized spins change their direction of motion; d) acquiring an NMR signal from the excitation column; e) reconstructing a one-dimensional image by Fourier transforming the acquired NMR signal; and f) producing a one-dimensional phase image from the reconstructed one-dimensional image.