Fat/water separation in single acquisition steady‐state free precession using multiple echo radial trajectories
- 10 October 2005
- journal article
- clinical trial
- Published by Wiley in Magnetic Resonance in Medicine
- Vol. 54 (5), 1051-1057
- https://doi.org/10.1002/mrm.20715
Abstract
Phase detection in fully refocused SSFP imaging has recently allowed fat/water separation without preparing the magnetization or using multiple acquisitions. Instead, it exploits the phase difference between fat and water at an echo time at the midpoint of the TR. To minimize the TR for improved robustness to B0 inhomogeneity, a 3D projection acquisition collecting two half echoes at the beginning and end of each excitation was previously implemented. Since echoes are not formed at the midpoint of the TR, this method still requires two passes of k‐space for fat/water separation. A new method is presented to linearly combine the half echoes to separate fat and water in a single acquisition. Separation using phase detection provides superior contrast between fat and water voxels. Results from high resolution angiography and musculoskeletal studies with improved robustness to inhomogeneity and a 50% scan time reduction compared to the two pass method are presented. Magn Reson Med, 2005.Keywords
This publication has 14 references indexed in Scilit:
- Rapid fat‐suppressed isotropic steady‐state free precession imaging using true 3D multiple‐half‐echo projection reconstructionMagnetic Resonance in Medicine, 2005
- Multicoil Dixon chemical species separation with an iterative least‐squares estimation methodMagnetic Resonance in Medicine, 2003
- Fat‐suppressed steady‐state free precession imaging using phase detectionMagnetic Resonance in Medicine, 2003
- Rapid MR Imaging of Articular Cartilage with Steady-State Free Precession and Multipoint Fat-Water SeparationAmerican Journal of Roentgenology, 2003
- Is TrueFISP a gradient‐echo or a spin‐echo sequence?Magnetic Resonance in Medicine, 2003
- FIESTA‐ET: High‐resolution cardiac imaging using echo‐planar steady‐state free precessionMagnetic Resonance in Medicine, 2002
- Magnetization preparation during the steady state: Fat‐saturated 3D TrueFISPMagnetic Resonance in Medicine, 2001
- Linear combination steady-state free precession MRIMagnetic Resonance in Medicine, 2000
- Fluctuating equilibrium MRIMagnetic Resonance in Medicine, 1999
- Steady-State Free Precession in Nuclear Magnetic ResonancePhysical Review B, 1958