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Abstract #2680

Improved Automatic Deblurring Using a Novel Objective Function Paired with a Retraced Spiral Acquisition Trajectory

Steven P Allen1, Xue Feng1, Samuel Fielden2, and Craig H Meyer1

1Biomedical Engineering, University of Virginia, Charlottesville, VA, United States, 2Autism and Developmental Medicine Institute, Geisinger Health System, Lewisburg, PA, United States

We introduce a novel objective function for automatic deblurring of images acquired with non-2DFT trajectories. When paired with the recently introduced retraced, spiral-in-out trajectory, this objective function provides two advantages over previously established functions: it is invariant with incidental phase and is less susceptible to spurious extrema. These advantages lead to effective deblurring over a larger range of off resonance conditions and readout durations. Here, using simulations and phantom studies, we compare the sensitivity of this objective function to spurious extrema to a previously proposed function.

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