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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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