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Tracking motion with tagged rapid gradient‐echo magnetization‐prepared MR imaging
Author(s) -
Niitsu Mamoru,
Campeau Norbert G.,
HolsingerBampton Anna E.,
Riederer Stephen J.,
Ehman Richard L.
Publication year - 1992
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880020208
Subject(s) - match moving , tracking (education) , imaging phantom , motion (physics) , echo (communications protocol) , nuclear magnetic resonance , computer vision , computer science , physics , artificial intelligence , biomedical engineering , materials science , optics , medicine , psychology , computer network , pedagogy
A technique for rapid assessment of tissue motion was developed by combining spatially selective radio‐frequency tagging pulses with centric phase‐encoding view ordering in a T1‐weighted, magnetization‐prepared gradient‐echo acquisition sequence. This sequence allowed labeling and tracking of tissue motion with single‐image acquisition times of less than 3 seconds. Multiple tagged bands 3 mm thick were superimposed orthogonal to the imaging plane. Motion in the interval between tagging and the start of image acquisition could then be precisely determined. The technique was evaluated with phantom studies and then applied to human volunteers for assessment of skeletal muscle motion, phonation, and pelvic floor motion.