T1- and T2-weighted fast spin-echo imaging of the brachial plexus and cervical spine with IDEAL water–fat separation
Article first published online: 12 SEP 2006
Copyright © 2006 Wiley-Liss, Inc.
Journal of Magnetic Resonance Imaging
Volume 24, Issue 4, pages 825–832, October 2006
How to Cite
Reeder, S. B., Yu, H., Johnson, J. W., Shimakawa, A., Brittain, J. H., Pelc, N. J., Beaulieu, C. F. and Gold, G. E. (2006), T1- and T2-weighted fast spin-echo imaging of the brachial plexus and cervical spine with IDEAL water–fat separation. J. Magn. Reson. Imaging, 24: 825–832. doi: 10.1002/jmri.20721
- Issue published online: 22 SEP 2006
- Article first published online: 12 SEP 2006
- Manuscript Accepted: 30 JUN 2006
- Manuscript Received: 12 SEP 2005
- NIH. Grant Numbers: P41 RR09784, 1RO1-EB002524
- Lucas Foundation
- GE Healthcare
- fat suppression;
- fast spin-echo;
- magnetic resonance imaging;
- water–fat separation;
- asymmetric echoes;
- brachial plexus;
- cervical spine
To compare the iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL) method with fat-saturated T1-weighted (T1W) and T2W fast spin-echo (FSE) and short-TI inversion recovery (STIR) imaging of the brachial plexus and cervical spine.
Materials and Methods
Images acquired at 1.5T in five volunteers using fat-saturated T1W and T2W FSE imaging and STIR were compared with T1W and T2W IDEAL-FSE images. Examples of T1W and T2W IDEAL-FSE images acquired in patients are also shown.
T1W and T2W IDEAL-FSE demonstrated superior fat suppression (P < 0.05) and image quality (P < 0.05), compared to T1W and T2W fat-saturated FSE, respectively. SNR performance of T1W-IDEAL-FSE was similar to T1W FSE in the spinal cord (P = 0.250) and paraspinous muscles (P = 0.78), while T2W IDEAL-FSE had superior SNR in muscle (P = 0.02) and CSF (P = 0.02), and marginally higher cord SNR (P = 0.09). Compared to STIR, T2W IDEAL-FSE demonstrated superior image quality (P < 0.05), comparable fat suppression (excellent, P = 1.0), and higher SNR performance (P < 0.001).
IDEAL-FSE is a promising method for T1W and T2W imaging of the brachial plexus and cervical spine. J. Magn. Reson. Imaging 2006. © 2006 Wiley-Liss, Inc.