S Sophie Schauman1, Thomas W Okell1, and Mark Chiew1
1Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
1Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
Golden ratio radial sampling is not always the best way to acquire dynamic MRI data for reconstruction at multiple temporal resolutions. Higher uniformity and SNR can be achieved if the angular increment between spokes is optimised for the reconstructed temporal resolutions.
Fig 1 - SILVER optimizes a single parameter, the angular increment, α, in the window sizes that are included in the optimisation set, S (A). In this project a TURBINE acquisition scheme, (B), was used (fig modified from [4]), and the data were reconstructed using 2D non-Cartesian SENSE (C).
Fig 2 - Predicted sampling efficiency for different numbers of spokes per frame. SILVER optimised regions highlighted in gray.
