Patent ID: 6043651
Filing Date: 2000-03-28
Classification: G01R

Abstract:
For nuclear magnetic resonance signals each having a phase associated therewith, a method for correcting the phase of said nuclear magnetic resonance signals, comprising the steps of:acquiring a plurality of image echos from a subject under successive pulses, of alternating operational sign, of a readout gradient;acquiring at least one reference echo of a first type under at least one pulse of a first operational sign of said readout gradient, and acquiring at least two reference echos of a second type under at least two pulses of second polarity of said readout gradient, said at least one reference echo of a first type and said at least two reference echos of a second type all exhibiting equal phase coding;determining at least one interpolation echo for a sampling time of said at least one reference echo of the first type by interpolation from said at least two reference echos of the second type;producing a correction dataset by comparing each interpolation echo with each reference echo of the first type;correcting said image echos using said correction dataset to produce corrected image echos; andentering said corrected image echos row-by-row into a raw data matrix.