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- Title
Inversion-recovery-prepared dixon bSSFP: Initial clinical experience with a novel pulse sequence for renal MRA within a breathhold.
- Authors
Worters, Pauline W.; Saranathan, Manojkumar; Xu, Alan; Vasanawala, Shreyas S.
- Abstract
Purpose: To evaluate the capability of a new breathhold non-contrast-enhanced MRA method (Non-contrast Outer Radial Inner Square k-space Scheme, NORISKS) to visualize renal arteries by comparing the method with a routine clinical but significantly longer non-contrast-enhanced (non-CE) MRA technique. Materials and Methods: Eighteen subjects referred for abdominal MRI were examined with NORISKS and a routine non-contrast-enhanced MRA technique. Two versions of NORISKS were evaluated: with and without ECG gating. The images were then scored independently and in blinded manner by two radiologists on 5-point scales for visualization of the proximal and distal renal arteries and quality of fat suppression. Results: No statistically significant difference was detected between NORISKS and routine clinical non-CE MRA in all categories except for visualization of the distal renal arteries where ungated NORISKS performed poorer than the routine non-CE MRA ( P < 10−4). Conclusion: We have demonstrated a promising non-CE MRA method for acquiring renal angiograms within a breathhold without any compromise in spatial resolution or coverage. ECG-gated NORISKS is able to acquire renal angiograms that are comparable to a routine clinical non-CE MRA method (Inhance IFIR, GE Healthcare), which requires approximately seven times the scan time of NORISKS. J. Magn. Reson. Imaging 2012;35:875-881. © 2011 Wiley Periodicals, Inc.
- Publication
Journal of Magnetic Resonance Imaging, 2012, Vol 35, Issue 4, p875
- ISSN
1053-1807
- Publication type
Article
- DOI
10.1002/jmri.23503