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Pathway selection by pulsed field gradients
Author(s) -
Rodriguez Ignacio,
Alejo Rigoberto Perez de,
RuizCabello Jesus
Publication year - 2002
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.10251
Subject(s) - selection (genetic algorithm) , pulse sequence , pulse (music) , signal (programming language) , field (mathematics) , computer science , nuclear magnetic resonance , physics , mathematics , artificial intelligence , telecommunications , detector , pure mathematics , programming language
A method for pathway selection in a multiple spin‐echo pulse sequence applying crusher gradients before and after each π pulse, to dephase unwanted pathways, is described. This method selects the only pathway that would contribute to the measurable signal if the π pulses were perfect (1,–1,1,–1,…). Good pathway selection is essential in pulse programming, especially when the CPMG condition is not met. An interactive applet was also developed to deal with these calculations. Magn Reson Med 48:540–542, 2002. © 2002 Wiley‐Liss, Inc.