Super-resolution reconstruction of cardiac MRI using coupled dictionary learning

Bhatia KK, Price AN, Shi W, Hajnal JV, Rueckert D (2014)

Publication Type: Conference contribution

Publication year: 2014

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 947-950

Conference Proceedings Title: 2014 IEEE 11th International Symposium on Biomedical Imaging, ISBI 2014

Event location: Beijing, CHN

ISBN: 9781467319591

DOI: 10.1109/isbi.2014.6868028

Abstract

High resolution 3D cardiac MRI is difficult to achieve due to the relative speed of motion occurring during acquisition. Instead, anisotropic 2D stack volumes are typical, and improving the resolution of these is strongly motivated by both visualisation and analysis. The lack of suitable reconstruction techniques that handle non-rigid motion means that cardiac image enhancement is still often attained by simple interpolation. In this paper, we explore the use of example-based super-resolution, to enable high fidelity patch-based reconstruction, using training data that does not need to be accurately aligned with the target data. By moving to a patch scale, we are able to exploit the data redundancy present in cardiac image sequences, without the need for registration. To do this, dictionaries of high-resolution and low-resolution patches are co-trained on high-resolution sequences, in order to enforce a common relationship between high-and low-resolution patch representations. These dictionaries are then used to reconstruct from a low-resolution view of the same anatomy. We demonstrate marked improvements of the reconstruction algorithm over standard interpolation.

Involved external institutions

Imperial College London / The Imperial College of Science, Technology and Medicine GB United Kingdom (GB) King’s College London GB United Kingdom (GB)

How to cite

APA:

Bhatia, K.K., Price, A.N., Shi, W., Hajnal, J.V., & Rueckert, D. (2014). Super-resolution reconstruction of cardiac MRI using coupled dictionary learning. In 2014 IEEE 11th International Symposium on Biomedical Imaging, ISBI 2014 (pp. 947-950). Beijing, CHN: Institute of Electrical and Electronics Engineers Inc..

MLA:

Bhatia, Kanwal K., et al. "Super-resolution reconstruction of cardiac MRI using coupled dictionary learning." Proceedings of the 2014 IEEE 11th International Symposium on Biomedical Imaging, ISBI 2014, Beijing, CHN Institute of Electrical and Electronics Engineers Inc., 2014. 947-950.

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