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Papers/End-to-End Variational Networks for Accelerated MRI Recons...

End-to-End Variational Networks for Accelerated MRI Reconstruction

Anuroop Sriram, Jure Zbontar, Tullie Murrell, Aaron Defazio, C. Lawrence Zitnick, Nafissa Yakubova, Florian Knoll, Patricia Johnson

2020-04-14AnatomyMRI Reconstruction
PaperPDFCode(official)CodeCode

Abstract

The slow acquisition speed of magnetic resonance imaging (MRI) has led to the development of two complementary methods: acquiring multiple views of the anatomy simultaneously (parallel imaging) and acquiring fewer samples than necessary for traditional signal processing methods (compressed sensing). While the combination of these methods has the potential to allow much faster scan times, reconstruction from such undersampled multi-coil data has remained an open problem. In this paper, we present a new approach to this problem that extends previously proposed variational methods by learning fully end-to-end. Our method obtains new state-of-the-art results on the fastMRI dataset for both brain and knee MRIs.

Results

TaskDatasetMetricValueModel
Image ReconstructionfastMRI Knee 4xPSNR40End-to-end variational network
Image ReconstructionfastMRI Knee 4xSSIM0.93End-to-end variational network
Image ReconstructionfastMRI Knee 8xPSNR37End-to-end variational network
Image ReconstructionfastMRI Knee 8xSSIM0.89End-to-end variational network
Image ReconstructionfastMRI Brain 4xPSNR41End-to-end variational network
Image ReconstructionfastMRI Brain 4xSSIM0.959End-to-end variational network
Image ReconstructionfastMRI Brain 8xPSNR38End-to-end variational network
Image ReconstructionfastMRI Brain 8xSSIM0.943End-to-end variational network
Image ReconstructionfastMRI Knee Val 8x NMSE0.0087E2E-VarNet (train+val)
Image ReconstructionfastMRI Knee Val 8x PSNR37.3E2E-VarNet (train+val)
Image ReconstructionfastMRI Knee Val 8x Params (M)30E2E-VarNet (train+val)
Image ReconstructionfastMRI Knee Val 8x SSIM0.8936E2E-VarNet (train+val)
MRI ReconstructionfastMRI Knee 4xPSNR40End-to-end variational network
MRI ReconstructionfastMRI Knee 4xSSIM0.93End-to-end variational network
MRI ReconstructionfastMRI Knee 8xPSNR37End-to-end variational network
MRI ReconstructionfastMRI Knee 8xSSIM0.89End-to-end variational network
MRI ReconstructionfastMRI Brain 4xPSNR41End-to-end variational network
MRI ReconstructionfastMRI Brain 4xSSIM0.959End-to-end variational network
MRI ReconstructionfastMRI Brain 8xPSNR38End-to-end variational network
MRI ReconstructionfastMRI Brain 8xSSIM0.943End-to-end variational network
MRI ReconstructionfastMRI Knee Val 8x NMSE0.0087E2E-VarNet (train+val)
MRI ReconstructionfastMRI Knee Val 8x PSNR37.3E2E-VarNet (train+val)
MRI ReconstructionfastMRI Knee Val 8x Params (M)30E2E-VarNet (train+val)
MRI ReconstructionfastMRI Knee Val 8x SSIM0.8936E2E-VarNet (train+val)

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