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.
Original language | English (US) |
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Pages (from-to) | 739-743 |
Number of pages | 5 |
Journal | Magnetic resonance in medicine |
Volume | 48 |
Issue number | 4 |
DOIs | |
State | Published - Oct 1 2002 |
Externally published | Yes |
Keywords
- Magnetic resonance angiography (MRA)
- Motion study
- Navigator technology
- Projection MRA
- Renal angiography
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging