Abstract #0503

SNR-efficient SSFP with k-space aliasing

Peter J Lally^1,2, Ben Statton³, Paul M Matthews^1,4, Mark Chiew⁵, Karla L Miller⁵, and Neal K Bangerter⁶

¹Department of Brain Sciences, Imperial College London, London, United Kingdom, ²UK Dementia Research Institute Centre for Care Research and Technology, London, United Kingdom, ³MRC London Institute of Medical Sciences, Imperial College London, London, United Kingdom, ⁴UK Dementia Research Institute Centre at Imperial College London, London, United Kingdom, ⁵Wellcome Centre for Integrative Neuroimaging, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom, ⁶Department of Bioengineering, Imperial College London, London, United Kingdom

Synopsis

Steady state free precession (SSFP) imaging with unbalanced gradients (e.g. FISP, PSIF, DESS) causes aliasing in k-space which is often overlooked, or at best, minimised with large spoilers. Here we exploit this phenomenon and use the aliased signals to increase the SNR-efficiency of SSFP imaging.

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