Patent ID: 6900634
Filing Date: 2005-05-31
Classification: G01R

Abstract:
1. A magnetic resonance spectroscopy method comprising the steps of: (a) emitting an excitation RF pulse with simultaneous generation of a first gradient during an excitation segment having a time duration corresponding to a duration of said excitation RF pulse; (b) emitting a first refocusing RF pulse, having a first phase relative to said excitation RF pulse, and simultaneously generating a second gradient during a first refocusing segment that immediately follows said excitation segment and has a time duration corresponding to a duration of said first refocusing RF pulse; (c) allowing an intermediate segment to elapse immediately following said first refocusing segment for temporally positioning a secondary spin echo; (d) emitting a second refocusing RF pulse having a second phase relative to said excitation RF pulse and simultaneously generating a third gradient during a second refocusing segment immediately following said intermediate segment and having a time duration corresponding to a duration of said second refocusing RF pulse; (e) acquiring said secondary spin echo during an acquisition segment immediately following said second refocusing segment; and (f) repeating steps (a) through (e) and in respective repetitions varying the respective phases of said excitation RF pulse, said first refocusing RF pulse and said second refocusing RF pulse according to a phase cycle.