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Abstract #1318

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

Cagla Deniz Bahadir1,2, Suchandrima Banerjee3, Ajit Shankaranarayanan3, and Emine Ulku Saritas1,2

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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