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. Author manuscript; available in PMC: 2008 Oct 27.
Published in final edited form as: Proc IEEE Inst Electr Electron Eng. 2003 Oct;9(10):1627–1648. doi: 10.1109/JPROC.2003.817872

Fig. 7.

Fig. 7

A simple PFG sequence, where two opposing gradients which are separated by a certain duration causes the magnetization vectors to first rotate and later return to their original phase value for stationary protons, causing a net phase accumulation only for nonstationary protons. Two variants of this simple PFG pulse sequence are also given: pulsed gradient spin-echo (PGSE) sequence with the introduction of a spin echo and the pulsed gradient stimulated echo (PGSTE) sequence, which stores one component of the magnetization along longitudinal magnetization (see Section II-E for details).