Abstract #1318

Sheared 2DRF Excitation for Improved Off-resonance Robustness in Reduced FOV Imaging

Cagla Deniz Bahadir^1,2, Suchandrima Banerjee³, Ajit Shankaranarayanan³, and Emine Ulku Saritas^1,2

¹Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey, ²National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey, ³Global MR Applications & Workflow, GE Healthcare, Menlo Park, CA, United States

Reduced field-of-view (FOV) using two-dimensional spatially selective radio frequency (2DRF) excitation has been widely used for targeted, high-resolution diffusion weighted imaging (DWI). This work proposes a sheared 2DRF excitation scheme to rapidly and efficiently cover the excitation k-space. This approach not only enables extended slice coverage and preserves fat suppression capabilities, but also significantly improves the robustness against off-resonance-induced signal losses of 2DRF pulses.

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