Referenceless Reconstruction of Spatiotemporally-Encoded Imaging Data

Single-shot sequences utilizing spatiotemporal encoding (SPEN) provide robust alternatives to single-shot EPI with similar acquisition durations and comparable resolution, provided that specialized super-resolved reconstruction algorithms are used in the image retrieval. Acquisition imperfections known to cause ghosting artifacts in EPI, can also give rise to artifacts in processed Hybrid-SPEN images. We demonstrate that these experiments, unlike EPI, do not require a reference scan to correct for these imperfections. A self-referencing algorithm based on the fact that under-sampling along the SPEN direction does not generate aliasing, but rather lower resolution images, is developed. The referenceless algorithm and sample results are presented.

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