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Rapid cine MRI of the human heart using reconstruction by estimation of lines and inhibition of fold‐in
Author(s) -
Rehwald Wolfgang G.,
Kim Raymond J.,
Judd Robert M.
Publication year - 2002
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.10150
Subject(s) - subtraction , interpolation (computer graphics) , artificial intelligence , computer vision , computer science , line (geometry) , nuclear medicine , physics , biomedical engineering , nuclear magnetic resonance , mathematics , medicine , image (mathematics) , geometry , arithmetic
A fast imaging method is described that yields an approximately six‐fold acquisition time reduction relative to conventional techniques. The method involves: 1) acquisition of every sixth k ‐space line; 2) shifting of acquired k ‐space lines between odd and even frames; and 3) a single‐frame correction image. Reconstruction is achieved by temporal interpolation for k ‐space lines not acquired combined with subtraction of stationary fold‐in artifacts. Seven patients with heart disease and one volunteer were evaluated. SNR was measured in myocardium and the ventricular cavity for both the conventional and new technique. The method is best suited for fast imaging of moving objects confined to a small region within a larger stationary object, such as the heart within the thoracic cavity. It can be implemented in cine and functional imaging sequences and, in principle, in perfusion sequences. Magn Reson Med 47:844–849, 2002. © 2002 Wiley‐Liss, Inc.