Patrick H. Le Roux1
1Applied Science Lab, GE Healthcare,
Palaiseau, IDF,
The
non-CPMG sequence permits to acquire MR signal in the Fast Spin Echo mode
even when the CPMG (Carr Purcell Meiboom Gill) phase conditions cannot be
fulfilled. It consists in a quadratic
phase modulation of the refocusing pulses train, preceded by a suitable
preparation period. It turns out that this sequence of RF pulses can be
readily inversed permitting a perfect Driven Equilibrium scheme to be
applied.