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Mixed echo train acquisition displacement encoding with stimulated echoes: An optimized DENSE method for in vivo functional imaging of the human heart
Author(s) -
Aletras Anthony H.,
Wen Han
Publication year - 2001
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.1223
Subject(s) - scanner , biomedical engineering , in vivo , computer science , data acquisition , image resolution , nuclear medicine , nuclear magnetic resonance , materials science , physics , artificial intelligence , medicine , microbiology and biotechnology , biology , operating system
M ixed e cho t rain a cquisition d isplacement en coding with s timulated e choes (meta‐DENSE) is a phase‐based displacement mapping technique suitable for imaging myocardial function. This method has been optimized for use with patients who have a history of myocardial infarction. The total scan time is 12–14 heartbeats for an in‐plane resolution of 2.8 × 2.8 mm 2 . Myocardial strain is mapped at this resolution with an accuracy of 2% strain in vivo. Compared to standard st imulated e cho (STE) methods, both data acquisition speed and resolution are improved with inversion‐recovery FID suppression and the meta‐DENSE readout scheme. Data processing requires minimal user intervention and provides a rapid quantitative feedback on the MRI scanner for evaluating cardiac function. Magn Reson Med 46:523–534, 2001. Published 2001 Wiley‐Liss, Inc.