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Abstract #2938

Accelerated MRI Reconstruction Using a Lightweight Recurrent Transformer: ReconFormer

Pengfei Guo1, Yiqun Mei1, Jinyuan Zhou2, Shanshan Jiang2, and Vishal M. Patel1
1Department of Computer Science, Johns Hopkins University, Baltimore, MD, United States, 2Department of Radiology, Johns Hopkins University, Baltimore, MD, United States

Synopsis

Keywords: Image Reconstruction, Image ReconstructionAccelerating MRI reconstruction process is a challenging ill-posed inverse problem due to the excessive under-sampling operation in k-space. While state-of-the-art algorithms have shown a great progress based on convolutional neural networks (CNN), transformers for MRI reconstruction has not been fully explored in the literature. We propose a recurrent transformer model, namely, ReconFormer, for MRI reconstruction which can iteratively reconstruct high fertility magnetic resonance images from highly under-sampled k-space data. We validate the effectiveness of ReconFormer on multiple datasets with different magnetic resonance sequences and show that it achieves significant improvements over the state-of-the-art methods with better parameter efficiency.

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Keywords