Abstract
Fat/water separation methods such as fluctuating equilibrium magnetic resonance and linear combination steady-state free precession have not yet been successfully implemented at 3.0 T due to extreme limitations on the time available for spatial encoding with the increase in magnetic field strength. We present a method to utilize a three-dimensional radial sequence combined with linear combination steady-state free precession at 3.0 T to take advantage of the increased signal levels over 1.5 T and demonstrate high spatial resolution compared to Cartesian techniques. We exploit information from the two half-echoes within each pulse repetition time to correct the accumulated phase on a point-by-point basis, thereby fully aligning the phase of both half-echoes. The correction provides reduced sensitivity to static field (B0) inhomogeneity and robust fat/water separation. Resultant images in the knee joint demonstrate the necessity of such a correction, as well as the increased isotropic spatial resolution attainable at 3.0 T. Results of a clinical study comparing this sequence to conventional joint imaging sequences are included.
Original language | English (US) |
---|---|
Pages (from-to) | 282-289 |
Number of pages | 8 |
Journal | Magnetic Resonance in Medicine |
Volume | 63 |
Issue number | 2 |
DOIs | |
State | Published - Feb 1 2010 |
Keywords
- 3.0 T
- 3D radial
- Fast imaging
- Fat suppression
- Fat/water imaging
- Magnetic resonance
- Musculoskeletal imaging
- Non-cartesian
- Steady state free precession
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging