Navigator-gated free-breathing 3D balanced FFE projection renal MRA: Comparison with contrast-enhanced breath-hold 3D MRA in a swine model
✍ Scribed by Elmar Spuentrup; Arno Buecker; Julius Meyer; Rolf W. Günther; Matthias Stuber
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 449 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0740-3194
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✦ Synopsis
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.