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Exploiting Motion for Deep Learning Reconstruction of Extremely-Undersampled Dynamic MRI

  • Gavin SeegoolamEmail author
  • Jo Schlemper
  • Chen Qin
  • Anthony Price
  • Jo Hajnal
  • Daniel Rueckert
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11767)

Abstract

The problem of accelerated acquisition for dynamic MRI has been recently tackled with deep learning techniques. However, current state-of-the-art approaches do not incorporate a strategy to exploit the full temporal information of the k-space acquisition which would aid in producing higher quality reconstructions. In this paper, we propose a novel method for exploiting the full temporal dynamics for dynamic MRI reconstructions. Specifically, motion estimates are derived from undersampled MRI sequences. These are used to fuse data along the entire temporal axis to produce a novel data-consistent motion-augmented cine (DC-MAC). This is generated and utilised within an end-to-end trainable deep learning framework for MRI reconstruction. In particular, we find that for aggressive acceleration rates of \(\times 51.2 \) on our cardiac dataset, our method with 3-fold cross-validation, ME-CNN, outperforms the current widely-accepted state-of-the-art, DC-CNN, with an improvement of 12% and 16% in PSNR and SSIM respectively. We report an average PSNR of \(27.3\pm 2.5\) and SSIM of \(0.776\pm 0.054\). We also explore the robustness of using ME-CNN for unseen, out-of-domain examples.

Notes

Acknowledgements

GS is funded by the KCL & ICL EPSRC CDT in Medical Imaging (EP/L015226/1). Additionally, this work was supported by EPSRC programme Grant (EP/P001009/1).

Supplementary material

490278_1_En_77_MOESM1_ESM.zip (2.2 mb)
Supplementary material 1 (zip 2217 KB)

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Gavin Seegoolam
    • 1
    Email author
  • Jo Schlemper
    • 1
  • Chen Qin
    • 1
  • Anthony Price
    • 2
  • Jo Hajnal
    • 2
  • Daniel Rueckert
    • 1
  1. 1.BioMedIA, Department of ComputingImperial College LondonLondonUK
  2. 2.Biomedical Engineering DepartmentKings College LondonLondonUK

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