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A reduced field‐of‐view method to increase temporal resolution or reduce scan time in cine MRI
Author(s) -
Madore Bruno,
Fredrickson Jill O.,
Alley Marcus T.,
Pelc Norbert J.
Publication year - 2000
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(200004)43:4<549::aid-mrm9>3.0.co;2-y
Subject(s) - field of view , image resolution , dynamic imaging , resolution (logic) , temporal resolution , dynamic contrast , computer science , spiral (railway) , physics , magnetic resonance imaging , nuclear medicine , optics , computer vision , artificial intelligence , mathematics , image (mathematics) , image processing , radiology , medicine , mathematical analysis , digital image processing
In some dynamic applications of MRI, only a part of the field‐of‐view (FOV) actually undergoes dynamic changes. A class of methods, called reduced‐FOV (rFOV) methods, convert the knowledge that some part of the FOV is static or not very dynamic into an increase in temporal resolution for the dynamic part, or into a reduction in the scan time. Although cardiac imaging is an important example of an imaging situation where changes are concentrated in a fraction of the FOV, the rFOV methods developed up to now are not compatible with one of the most common cardiac sequences, the so‐called retrospective cine method. The present work is a rFOV method designed to be compatible with cine imaging. An increase by a factor n in temporal resolution or a decrease by n in scan time is obtained in the case where only one n th of the FOV is dynamic (the rest being considered static). Results are presented for both Cartesian and spiral imaging. Magn Reson Med 43:549–558, 2000. © 2000 Wiley‐Liss, Inc.