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Myocardial tagging with B 1 insensitive adiabatic DANTE inversion sequences
Author(s) -
Tsekos Nikolaos V.,
Garwood Michael,
Merkle Hellmut,
Xu Ya,
Wilke Norbert,
Uǧurbil Kǎmil
Publication year - 1995
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.1910340317
Subject(s) - adiabatic process , excitation , imaging phantom , physics , nuclear magnetic resonance , cardiac cycle , inversion (geology) , signal (programming language) , contrast (vision) , optics , materials science , computational physics , computer science , biology , medicine , paleontology , quantum mechanics , structural basin , thermodynamics , programming language
A new technique, based on adiabatic delays alternating with nutations for tailored excitation (DANTE) inversion sequences, is presented for generating uniform contrast tags across the myocardial wall even in the presence of B 1 inhomogeneities. The utility of this pulse was demonstrated using a surface coil for both transmission and signal reception in phantom and animal heart tagging studies. The experimental data demonstrated uniform grid contrast over a sixfold variation of B 1 magnitude, sharp tagging profiles, and the ability to follow the cardiac wall motion through the deformation of the fine rectangular tagging grid at different phases throughout the cardiac cycle.