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Navigator‐gated free‐breathing 3D balanced FFE projection renal MRA: Comparison with contrast‐enhanced breath‐hold 3D MRA in a swine model
Author(s) -
Spuentrup Elmar,
Buecker Arno,
Meyer Julius,
Günther Rolf W.,
Stuber Matthias
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.10271
Subject(s) - medicine , maximum intensity projection , magnetic resonance angiography , nuclear medicine , renal artery , right renal artery , breathing , radiology , angiography , kidney , magnetic resonance imaging , anatomy
Abstract A cardiac‐triggered, free‐breathing, 3D balanced FFE projection renal MR angiography (MRA) technique with a 2D pencil beam aortic labeling pulse for selective aortic spin tagging was developed. For respiratory motion artifact suppression during free breathing, a prospective real‐time navigator was implemented for renal MRA. Images obtained with the new approach were compared with standard contrast‐enhanced (CE) 3D breath‐hold MRA in seven swine. Signal properties and vessel visualization were analyzed. With the presented technique, high‐resolution, high‐contrast renal projection MRA with superior vessel length visualization (including a greater visible number of distal branches of the renal arteries) compared to standard breath‐hold CE‐MRA was obtained. The present results warrant clinical studies in patients with renal artery disease. Magn Reson Med 48:739–743, 2002. © 2002 Wiley‐Liss, Inc.