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Abstract #3106

Motion-mitigated reconstruction of accelerated MRI by using an unfolded variational network

Zijian Zhou1,2, Haikun Qi1,2, and Peng Hu1,2
1School of Biomedical Engineering, ShanghaiTech University, Shanghai, China, 2Shanghai Clinical Research and Trial Center, Shanghai, China

Synopsis

Keywords: Image Reconstruction, Motion CorrectionMotion-mitigated reconstruction of highly undersampled MRI was achieved by adding a motion estimation module to the data consistency part of the model-based unfolded variation network. The motion estimation module consisted of a pair of convolutional blocks with residual inputs and added only limited number of trainable parameters to the network. The network was trained and tested on synthesized motion-corrupted images from a publicly available knee dataset. The reconstructed images with the proposed motion estimation module were sharper, and details were better recovered, with the structural similarity and peak signal-to-noise ratio significantly improved.

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Keywords