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Öksüz, I.* ; Clough, J.* ; Bustin, A.* ; Cruz, G.* ; Prieto, C.* ; Botnar, R.M.* ; Rueckert, D.* ; Schnabel, J.A.* ; King, A.P.*

Cardiac mr motion artefact correction from k-space using deep learning-based reconstruction.

In: (International Workshop on Machine Learning for Medical Image Reconstruction). Berlin [u.a.]: Springer, 2018. 21-29 (Lect. Notes Comput. Sc. ; 11074 LNCS)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Incorrect ECG gating of cardiac magnetic resonance (CMR) acquisitions can lead to artefacts, which hampers the accuracy of diagnostic imaging. Therefore, there is a need for robust reconstruction methods to ensure high image quality. In this paper, we propose a method to automatically correct motion-related artefacts in CMR acquisitions during reconstruction from k-space data. Our method is based on the Automap reconstruction method, which directly reconstructs high quality MR images from k-space using deep learning. Our main methodological contribution is the addition of an adversarial element to this architecture, in which the quality of image reconstruction (the generator) is increased by using a discriminator. We train the reconstruction network to automatically correct for motion-related artefacts using synthetically corrupted CMR k-space data and uncorrupted reconstructed images. Using 25000 images from the UK Biobank dataset we achieve good image quality in the presence of synthetic motion artefacts, but some structural information was lost. We quantitatively compare our method to a standard inverse Fourier reconstruction. In addition, we qualitatively evaluate the proposed technique using k-space data containing real motion artefacts.
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Publication type Article: Conference contribution
Corresponding Author
Keywords Automap ; Cardiac Mr ; Deep Learning ; Image Artefacts ; Image Quality ; Image Reconstruction ; Uk Biobank
ISSN (print) / ISBN 0302-9743
e-ISSN 1611-3349
Conference Title International Workshop on Machine Learning for Medical Image Reconstruction
Journal Lecture Notes in Computer Science
Quellenangaben Volume: 11074 LNCS, Issue: , Pages: 21-29 Article Number: , Supplement: ,
Publisher Springer
Publishing Place Berlin [u.a.]
Non-patent literature Publications
Institute(s) Institute for Machine Learning in Biomed Imaging (IML)