Echo modulations that arise in Carr–Purcell–Meiboom–Gill (CPMG) spin echo sequences and stem from homonuclear couplings can be suppressed by different methods. The evolution under homonuclear couplings can be either ‘‘locked’’ or ‘‘refocused’’, leading to different transverse decay rates.
Stefano Alberti, Jean-Philippe Ansermet, Falk Hans Braunmüller, Philippe Cuanillon, Murari Soundararajan, Dongyoung Yoon