Walter R.T. Witschey1, Ari Borthakur2, Mark Elliott2, Erin Leigh McArdle2, Ravinder Reddy2
1Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, PA, USA; 2Radiology, University of Pennsylvania, Philadelphia, PA, USA
Spin locked steady-state free precession (slSSFP) is shown to maintain a balanced gradient echo steady-state with significantly lower power than a bSSFP acquisition with similar contrast. The independence of locking power on the observable contrast is shown for MnCl2 doped samples in the motional narrowing regime. slSSFP was shown to mimic bSSFP contrast in knee tissues but the dependence on low frequency relaxation dispersion remains to be explored.