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On the cause of spatial displacement of long T 1 species in segmented inversion recovery prepared imaging
Author(s) -
Goldfarb James W.,
Arnold Sheeba,
Schapiro William,
Reichek Nathaniel
Publication year - 2005
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.20566
Subject(s) - inversion (geology) , displacement (psychology) , magnetization , nuclear magnetic resonance , physics , cerebrospinal fluid , phase (matter) , magnetic field , phase space , geology , biology , neuroscience , seismology , psychology , quantum mechanics , psychotherapist , tectonics , thermodynamics
Using inversion recovery steady‐state free precession segmented k ‐space imaging for the detection of myocardial infarction, we noticed that some structures appeared in the wrong locations of the image. In this work, the spatial displacement is demonstrated and explained from both theoretical and experimental points of view. The effect is due to a change in phase from segment to segment of the detected magnetization from species with long T 1 's such as cysts, fluid collections, and cerebrospinal fluid. Depending on the number of k ‐space segments and view ordering, structures can be replicated throughout the image or displaced by half of the phase‐encoding field of view. Magn Reson Med 54:481–485, 2005. © 2005 Wiley‐Liss, Inc.