Abstract #0370

Clinically Viable Diffusion-Weighted Imaging Near Metal using 2D-MSI PROPELLER DUO

Suryanarayanan Sivaram Kaushik¹, Ajeet Gaddipati², Brian Hargreaves³, Dawei Gui⁴, Robert Peters², Tugan Muftuler⁵, and Kevin Koch¹

¹Radiology, Medical College of Wisconsin, Milwaukee, WI, United States, ²GE Healthcare, Waukesha, WI, United States, ³Radiology, Stanford University, Stanford, CA, United States, ⁴GE Healthcare, Waukesh, WI, United States, ⁵Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States

While FSE-based multi-spectral imaging (MSI) sequences help overcome the artifacts caused by metallic hardware, diffusion-weighted imaging remains a challenge. The non-CPMG artifacts caused by adding diffusion lobes to an FSE train can be mitigated by modulating the phase of the refocusing pulses. Another solution involves splitting the contribution made by the spin and stimulated echoes (DUO acquisition). Here, we combine a 2D version of MSI with a PROPELLER-DUO sequence to obtain clinically-feasible, artifact-minimized, diffusion-weighted images in subjects that have cancerous lesions in close proximity to metallic hardware.

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