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Abstract #2620

Fast 3D bSSFP Spine Imaging at 0.05 T

Jiahao Hu1,2, Ye Ding1,2, Shi Su1,2, Vick Lau1,2, Junhao Zhang1,2, Christopher Man1,2,3, Alex T. L. Leong1,2, Yujiao Zhao1,2, and Ed X. Wu1,2
1Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Hong Kong, China, 2Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China, 3Division of Medical Physics, St. Paul’s Hospital, Hong Kong, China

Synopsis

Keywords: Spinal Cord, Image Reconstruction

Motivation: Ultra-low-field (ULF) MRI presents significant potential for advancing medical imaging by offering portable and cost-effective solutions suitable for point-of-care applications, addressing unmet clinical needs in various health care settings globally. However, highly efficient protocols are required to handle low signal-to-noise ratio (SNR) and to minimize acquisition time.

Goal(s): The implementation of a highly time and SNR efficient protocol for ULF MRI.

Approach: A 3D balanced steady-state free precession (bSSFP) protocol was implemented with partial Fourier sampling for fast imaging.

Results: The study successfully implemented a bSSFP protocol at 0.05 T for high-quality C- and L-spine imaging. The acquisition time was within 4 min.

Impact: An optimized bSSFP protocol at 0.05 T was successfully implemented and achieved fast C- and L-spine imaging within 4 min. This highlighted the potential of applying high-quality and fast ULF imaging in clinics.

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