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PRESS

Point RESolved Spectroscopy
PRESS CSI acquires a double spin echo from a localized volume, consisting of three orthogonal-slice selective RF pulses (a 90° and two refocusing pulses), and two sets of crusher gradients. The crusher areas are compensated to include the slice refocus, any phase encoding, and the readout-dephase gradients. 90°-180°-180° RF pulses produce, in turn: a FID, an echo and a double spin-echo (relative SNR = 100%). A single shot technique.


GE Healthcare MR Glossary