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Imaging with positive T 1 ‐contrast using superstimulated echoes
Author(s) -
Hennig Jürgen,
Il'yasov Kamil A.,
Weigel Matthias
Publication year - 2012
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.24111
Subject(s) - contrast (vision) , nuclear magnetic resonance , magnetization , signal (programming language) , physics , spin echo , echo (communications protocol) , magnetic resonance imaging , materials science , computer science , medicine , radiology , optics , magnetic field , computer network , quantum mechanics , programming language
This article presents the basic principles of the superstimulated echo mechanism and shows preliminary results of its application to T 1 ‐weighted imaging with positive T 1 ‐contrast. A superstimulated echo scheme uses a preparation of square‐wave modulated, periodically inverted z‐magnetization, which after signal evolution during the mixing time TM is fully converted into transverse magnetization. This avoids the 50% signal loss of a conventional stimulated echo. Furthermore, its implementation as a preparation module for standard turbo spin echo (TSE) imaging allows producing images with positive T 1 ‐contrast. Magn Reson Med, 2012. © 2011 Wiley Periodicals, Inc.