Abstract #1038

Variable Density Single-Shot Fast Spin Echo with Auto-Calibrated Wave Encoding

Feiyu Chen¹, Valentina Taviani², Joseph Y Cheng³, Tao Zhang⁴, Brian A Hargreaves³, John M Pauly¹, and Shreyas S Vasanawala³

¹Electrical Engineering, Stanford University, Stanford, CA, United States, ²Global MR Applications and Workflow, GE Healthcare, Menlo Park, CA, United States, ³Radiology, Stanford University, Stanford, CA, United States, ⁴Global MR Applications and Workflow, GE Healthcare, Houston, TX, United States

Wave encoding was implemented in a variable-density single-shot fast spin echo (VD-SSFSE) pulse sequence. Auto-calibrated estimation of the wave-encoding point-spread function (PSF) and coil sensitivity maps was used. Images were reconstructed with parallel imaging and compressed sensing reconstruction. Compared to non-wave-encoded Cartesian imaging, wave-encoded VD-SSFSE achieves improved image quality with reduced aliasing artifacts at higher acceleration factors and with full k-space coverage, providing fast acquisitions and clinically relevant echo times.

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