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Research questionHow can diffusion MRI reconstruct missing directions from undersampled k-space without confusing spatial artifacts with directional signal?Each diffusion direction requires k-space measurements, so undersampling creates coupled spatial and angular errors. Shared anatomy across directions can be difficult to distinguish from direction-dependent signal changes, allowing spatial artifacts to contaminate unobserved directions.
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Image & Video Processing
Machine Learning
Research Paper
Latest papersRecent research connected to this question, newest first.Diffusion-Encoding Gaussian Field for Joint k-q dMRI ReconstructionThe evidence concerns self-supervised, subject-specific joint k-q reconstruction from undersampled k-space measurements for observed diffusion directions, without fully sampled targets or held-out-direction supervision. Results cover three HCP diffusion shells and multiple acceleration settings, including missing-direction DWI reconstruction, tensor-derived metrics, and principal diffusion orientation estimation.research paper · Sep 2, 2026
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