Frequency-splitting dynamic MRI reconstruction using multi-scale 3D convolutional sparse coding and automatic parameter selection.
Medical Image Analysis(2019)
摘要
•Convolutional dictionary reconstructs high-frequency component of MRI images well.•Temporal total variation reconstructs low-frequency component of MRI images well.•Multi-scale dictionary improves MRI reconstruction quality.•Elastic net regularization works better than L1 or L2 regularization only.•Genetic algorithm automatically finds optimal parameters for MRI reconstruction.
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关键词
Compressed sensing,Dynamic MRI,Parallel MRI,Image reconstruction,Frequency filter,Multi-scale 3D convolutional sparse coding,Elastic net regularization,Total variation,Genetic algorithm,GPU
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