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Single breath‐hold extended free‐breathing navigator‐gated three‐dimensional coronary MRA
Author(s) -
Huber Michael E.,
Oelhafen Markus E.,
Kozerke Sebastian,
Weber Oliver M.,
Boesiger Peter
Publication year - 2002
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.10044
Subject(s) - k space , medicine , breathing , magnetic resonance imaging , nuclear medicine , contrast (vision) , magnetic resonance angiography , coronary angiography , radiology , cardiology , physics , anatomy , optics , myocardial infarction
Purpose To acquire the center of k‐ space while extending three‐dimensional free‐breathing navigator‐gated coronary magnetic resonance (MR) angiography by an initial single breath‐hold. Materials and Methods This approach was successfully applied in eight healthy adult subjects. Resulting images were compared with conventionally acquired free‐breathing navigator‐gated MR angiograms. Results The acquisition of k‐ space center during the single breath‐hold resulted in a 26% increase ( P < 0.05) of signal‐to‐noise ratio. Visible length of the right coronary artery, as well as contrast‐to‐noise ratio between the blood and the myocardial muscle, were identical. Conclusion The breath‐hold extension was shown to be a valuable technique that may be combined with first‐pass contrast‐enhanced MR imaging. J. Magn. Reson. Imaging 2002;15:210–214. © 2002 Wiley‐Liss, Inc.