Abstract #1761

Variable density spiral sampling and reconstruction for spatiotemporally encoded single-shot MRI

Lin Chen¹, Shuhui Cai¹, and Congbo Cai¹

¹Department of Electronic Science, Xiamen Unviersity, Xiamen, China, People's Republic of

As an emerging ultrafast imaging method, spatiotemporally encoded single-shot MRI is advantageous because it can resist off-resonance effects while retaining spatial and temporal resolutions comparable to the classical EPI. In this work, a variable density spiral sampling (VDSS) scheme is proposed for SPEN MRI. An optimization algorithm is used to design the sinusoidal readout gradient waveform. A specific gridding algorithm and non-Cartesian super-resovled reconstruction are proposed to retrieve image. Compared to the Cartesian sampling, VDSS can provide images with less artifacts and better spatial resolution.

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