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Recon-GLGAN: A Global-Local Context Based Generative Adversarial Network for MRI Reconstruction
Published in Springer
2019
Volume: 11905 LNCS
   
Pages: 3 - 15
Abstract
Magnetic resonance imaging (MRI) is one of the best medical imaging modalities as it offers excellent spatial resolution and soft-tissue contrast. But, the usage of MRI is limited by its slow acquisition time, which makes it expensive and causes patient discomfort. In order to accelerate the acquisition, multiple deep learning networks have been proposed. Recently, Generative Adversarial Networks (GANs) have shown promising results in MRI reconstruction. The drawback with the proposed GAN based methods is it does not incorporate the prior information about the end goal which could help in better reconstruction. For instance, in the case of cardiac MRI, the physician would be interested in the heart region which is of diagnostic relevance while excluding the peripheral regions. In this work, we show that incorporating prior information about a region of interest in the model would offer better performance. Thereby, we propose a novel GAN based architecture, Reconstruction Global-Local GAN (Recon-GLGAN) for MRI reconstruction. The proposed model contains a generator and a context discriminator which incorporates global and local contextual information from images. Our model offers significant performance improvement over the baseline models. Our experiments show that the concept of a context discriminator can be extended to existing GAN based reconstruction models to offer better performance. We also demonstrate that the reconstructions from the proposed method give segmentation results similar to fully sampled images. © Springer Nature Switzerland AG 2019.
About the journal
JournalData powered by TypesetLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
PublisherData powered by TypesetSpringer
ISSN03029743
Open AccessYes
Concepts (16)
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    Computer aided instruction
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    Deep learning
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    Diagnosis
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    Image reconstruction
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    Image segmentation
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    Machine learning
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    Magnetic resonance imaging
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    ADVERSARIAL NETWORKS
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    Cardiac mri
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    Global-local
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    LOCAL CONTEXTUAL INFORMATION
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    MRI RECONSTRUCTION
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    PERIPHERAL REGIONS
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    Segmentation results
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    Spatial resolution
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    MEDICAL IMAGE PROCESSING