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Volume‐selective determination of the spin‐lattice relaxation time in the rotating frame, T 1ρ , and T 1ρ , imaging
Author(s) -
Rommel E.,
Kimmich R.
Publication year - 1989
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.1910120207
Subject(s) - pulse sequence , nuclear magnetic resonance , magnetic resonance imaging , relaxation (psychology) , spin–lattice relaxation , pulse (music) , spectroscopy , physics , materials science , optics , medicine , detector , nuclear quadrupole resonance , radiology , psychology , social psychology , quantum mechanics
A method for the volume‐and resonance line‐selective determination of the longitudinal relaxation time in the rotating frame, T 1ρ , is described. The spin‐lock pulse intrinsic to the T 1ρ sequence simultaneously replaces the first slice‐selective pulse of the VOSY method for localized spectroscopy. This is a further parameter suitable for the local characterization of tissue. On the same basis, T 1ρ , can be used as a new contrast parameter for biomedical imaging purposes. An appropriate pulse sequence for T 1ρ imaging is presented. Test experiments which promise some striking advantages compared with conventional magnetic resonance imaging are reported. © 1989 Academic Press, Inc.