Results of the 2020 fastMRI Challenge for Machine Learning MR Image Reconstruction - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles IEEE Transactions on Medical Imaging Year : 2021

Results of the 2020 fastMRI Challenge for Machine Learning MR Image Reconstruction

Sunwoo Kim
  • Function : Author
Geunu Jeong
  • Function : Author
Jingyu Ko
  • Function : Author
Yohan Jun
  • Function : Author
Hyungseob Shin
  • Function : Author
Dosik Hwang
  • Function : Author

Abstract

Accelerating MRI scans is one of the principal outstanding problems in the MRI research community. Towards this goal, we hosted the second fastMRI competition targeted towards reconstructing MR images with subsampled k-space data. We provided participants with data from 7,299 clinical brain scans (de-identified via a HIPAA-compliant procedure by NYU Langone Health), holding back the fully-sampled data from 894 of these scans for challenge evaluation purposes. In contrast to the 2019 challenge, we focused our radiologist evaluations on pathological assessment in brain images. We also debuted a new Transfer track that required participants to submit models evaluated on MRI scanners from outside the training set. We received 19 submissions from eight different groups. Results showed one team scoring best in both SSIM scores and qualitative radiologist evaluations. We also performed analysis on alternative metrics to mitigate the effects of background noise and collected feedback from the participants to inform future challenges. Lastly, we identify common failure modes across the submissions, highlighting areas of need for future research in the MRI reconstruction community.
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Dates and versions

hal-03066150 , version 1 (15-12-2020)
hal-03066150 , version 2 (27-07-2021)

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Matthew J. Muckley, Bruno Riemenschneider, Alireza Radmanesh, Sunwoo Kim, Geunu Jeong, et al.. Results of the 2020 fastMRI Challenge for Machine Learning MR Image Reconstruction. IEEE Transactions on Medical Imaging, In press, ⟨10.1109/TMI.2021.3075856⟩. ⟨hal-03066150v2⟩
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