Data-Efficient AI for Accelerating MRI Acquisition

Data-Efficient AI for Accelerating MRI Acquisition

Stanford HAI via YouTube Direct link

Semi-Supervised Learning: Self-Tr

14 of 28

14 of 28

Semi-Supervised Learning: Self-Tr

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Data-Efficient AI for Accelerating MRI Acquisition

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  1. 1 Intro
  2. 2 Magnetic Resonance Imaging
  3. 3 Data Pipeline
  4. 4 Raw Data in MRI
  5. 5 k-space Sampling
  6. 6 Constraints
  7. 7 Can We Speed Things Up??
  8. 8 MRI Super-Resolution Convert low resolution (LR) to high resolution (HR)
  9. 9 Domain Knowledge • Embedding physical principles into the model
  10. 10 Reducing Data Requirements Domain knowledge reduce extent of ill-posed inverse problems
  11. 11 What if we have no training data
  12. 12 Deep Image Prior
  13. 13 Convolutional Decoder ConvDe
  14. 14 Semi-Supervised Learning: Self-Tr
  15. 15 Self-Training for MRI Recon
  16. 16 Why is ConvDecoder Better? Zero Unrolled ConvDecoder
  17. 17 ConvDecoder Noisy Student
  18. 18 Self-Training Takeaway Keep forward model identical; modify pseudo-labels
  19. 19 Invariance to Forward Model Change Supervised Unsupervised
  20. 20 Generalized Consistency Framew
  21. 21 Artifact Invariant Reconstruction
  22. 22 Metrics for Evaluation Discordance between quantitative and qualitative metrics
  23. 23 New Multi-Task Dataset
  24. 24 Surrogates without Dense Labels Use self-supervised tasks to build image representations
  25. 25 Self-Supervised Image Quality
  26. 26 Overall Takeaway • Adding domain knowledges reduces data requirements
  27. 27 Open Source Data/Code
  28. 28 Conclusions

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