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Abstract #2790

Data-driven Image Reconstruction for Ultra-low-field Knee and Spine MRI at 0.05T

Christopher Man1,2, Vick Lau1,2, Shihao Zeng1,2, Xiang Li1,2, Yujiao Zhao1,2, and Ed X. Wu1,2
1Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Hong Kong SAR, China, 2Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong SAR, China

Synopsis

Keywords: Machine Learning/Artificial Intelligence, Image Reconstruction, knee, c-spine

Motivation: Deep learning (DL) is a powerful tool for MR image formation tasks and MR data at ultra-low-field (ULF) strength has significantly lower SNR than high-field.

Goal(s): Enhancing the image quality of ULF knee and c-spine data at 0.05T via DL reconstruction.

Approach: We extend our recently developed 3D DL partial Fourier reconstruction and superresolution (PF-SR) method on PF-sampled low-resolution noisy brain data to knee and c-spine data.

Results: The preliminary results demonstrate PF-SR, trained on synthetic ULF data simulated from high-field data, can reduce noise and artifacts, and enhance spatial resolution in experimental ULF knee and c-spine data, acquired from 0.05T MRI platform.

Impact: Through leveraging the homogeneous human knee and spine anatomy available in high-field data to enhance the image quality of ultra-low-field knee and spine MRI at 0.05T via deep learning reconstruction in a low-cost and shielding-free 0.05T MRI platform.

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Keywords