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Abstract:
Non-Cartesian trajectories have several advantageous properties, including favorable parallel imaging performance. Recently, a novel concept of improving parallel imaging by electronically modulated time-varying receive sensitivities has been introduced. In the present work, we investigate if these two concepts can be combined, i.e., how dynamic sensitivity modulation impacts non-Cartesian parallel imaging reconstruction. To that end, numerical experiments are performed based on data from the novel reconfigurable coil array. We find improvement in convergence, reconstruction error and noise amplification due to rapid sensitivity modulation for radial, spiral, and Cartesian trajectories, implying the potential of this method for advanced encoding and reconstruction schemes.
