Premium
Real‐time imaging of regional myocardial function using fast‐SENC
Author(s) -
Pan Li,
Stuber Matthias,
Kraitchman Dara L.,
Fritzges Danielle L.,
Gilson Wesley D.,
Osman Nael F.
Publication year - 2006
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.20770
Subject(s) - heartbeat , ventricle , cardiac cycle , magnetic resonance imaging , imaging phantom , biomedical engineering , medicine , cardiology , nuclear medicine , computer science , radiology , computer security
A technique for fast imaging of regional myocardial function using a spiral acquisition in combination with strain‐encoded (SENC) magnetic resonance imaging (MRI) is presented in this paper. This technique, which is termed fast‐SENC, enables scan durations as short as a single heartbeat. A reduced field of view (FOV) without foldover artifacts was achieved by localized SENC, which selectively excited the region around the heart. The two images required for SENC imaging (low‐ and high‐tuning) were acquired in an interleaved fashion throughout the cardiac cycle to further shorten the scan time. Regional circumferential contraction and longitudinal shortening of both the left ventricle (LV) and right ventricle (RV) were examined in long‐ and short‐axis views, respectively. The in vivo results obtained from five human subjects and five infarcted dogs are presented. The results of the fast‐SENC technique in a single heartbeat acquisition were comparable to those obtained by conventional SENC in a long acquisition time. Therefore, fast‐SENC may prove useful for imaging during stress or arrhythmia. Magn Reson Med, 2006. © 2006 Wiley‐Liss, Inc.