Premium
Magnetization structure contrast based on intermolecular multiple‐quantum coherences
Author(s) -
Bouchard LouisSerge,
Rizi Rahim R.,
Warren Warren S.
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.10293
Subject(s) - intermolecular force , contrast (vision) , magnetization , nuclear magnetic resonance , bloch equations , nonlinear system , physics , image contrast , quantum , condensed matter physics , intensity (physics) , magnetization transfer , signal (programming language) , correlation , materials science , molecular physics , statistical physics , optics , magnetic resonance imaging , mathematics , magnetic field , quantum mechanics , molecule , radiology , geometry , computer science , programming language , medicine
In vivo and ex vivo MRI based on intermolecular multiple‐quantum coherences (iMQC) is predicted to provide a fundamentally different source of contrast for MRI. This article investigates the dependence of image contrast upon the choice of correlation distance for a heterogeneous material. A closely packed array of parallel hollow cylinders was used to demonstrate signal intensity variations when the correlation distance becomes comparable to the gap size between the cylinders. The observed effects agree well with three‐dimensional calculations of the time evolution of magnetization under the nonlinear Bloch equations. Magn Reson Med 48:973–979, 2002. © 2002 Wiley‐Liss, Inc.