Abstract #4577

Variable Frequency Wave-encoded 3D Turbo Spin Echo Imaging

Zechen Zhou¹, Baocheng Chu², Chun Yuan^2,3, and Peter Börnert⁴

¹Philips Research North America, Cambridge, MA, United States, ²Vascular Imaging Lab, Department of Radiology, University of Washington, Seattle, WA, United States, ³Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University, Beijing, China, ⁴Philips Research Hamburg, Hamburg, Germany

Wave encoding is an emerging approach that can take better usage of the three-dimensional (3D) spatial encoding power of multi-channel coils employed in parallel imaging (PI). In this work, a variable frequency (VF) wave encoding approach is proposed to improve the aliasing propagation property and reduce the side lobe amplitude of the transformed point spread function. This VF approach can also induce amplitude modulated wave encoding gradients to reduce eddy currents and improve the slice selection profile. The preliminary results demonstrated its improved PI performance for 3D turbo spin echo imaging over Cartesian and constant frequency wave encoding schemes.

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