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Abstract #0823

MERLIN: In-depth investigation on complex-valued image reconstruction in PyTorch and Tensorflow

Maarten Terpstra1,2, Kerstin Hammernik3,4, Thomas Küstner5, Matteo Maspero1,2, Cornelis van den Berg1,2, and Daniel Rueckert3,4
1Department of Radiotherapy, University Medical Center Utrecht, Utrecht, Netherlands, 2Computational Imaging Group for MR Diagnostics & Therapy, University Medical Center Utrecht, Utrecht, Netherlands, 3Lab for AI in Medcine, Technical University of Munich, Munich, Germany, 4Department of Computing, Imperial College London, London, United Kingdom, 5Medical Image And Data Analysis (MIDAS.lab), University Hospital of Tübingen, Tübingen, Germany

Synopsis

Keywords: Image Reconstruction, Machine Learning/Artificial IntelligenceMachine learning (ML) has become a powerful technique for reconstructing undersampled MRI. However, applying ML to MRI reconstruction requires several essential building blocks, consisting of general operations and MRI-specific operators in the context of reconstruction. While the former are available in generic frameworks such as Keras/TensorFlow or PyTorch, the MR-specific operators are generally custom-implemented. MERLIN was proposed as a generic toolkit for ML-based medical imaging to harmonize the machine learning landscape and to provide complex-valued interfaces for commonly used back-ends. Here, we evaluate MERLIN as a cross-platform toolkit for complex-valued image reconstruction.

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