Premium
Fluctuating equilibrium MRI
Author(s) -
Vasanawala Shreyas S.,
Pauly John M.,
Nishimura Dwight G.
Publication year - 1999
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/(sici)1522-2594(199911)42:5<876::aid-mrm6>3.0.co;2-z
Subject(s) - excitation , flip angle , nuclear magnetic resonance , magnetic resonance imaging , contrast (vision) , echo time , physics , computer science , materials science , optics , radiology , medicine , quantum mechanics
A new fast, spectrally selective imaging method called fluctuating equilibrium magnetic resonance is presented. With all gradients refocussed over a repetition interval, certain phase schedules of radiofrequency excitation pulses produce an equilibrium magnetization that fluctuates from excitation to excitation, thus permitting simultaneous acquisition of several images with different contrast features. For example, lipid and water images can be rapidly acquired. The effective echo time can be adjusted using the flip angle, thus providing control over the T 2 contribution to the contrast. Several applications of the technique are presented, including fast musculoskeletal, abdominal, breast, and brain imaging, in addition to MR angiography. A technique for combining lipid and water images generated with this sequence for angiography is described and other potential applications are suggested. Magn Reson Med 42:876–883, 1999. © 1999 Wiley‐Liss, Inc.