metadata

extra_gated_prompt: >-
  Please read and agree to the [Data Usage Agreement
  (DUA)](https://github.com/MLI-lab/PMoC3D/blob/main/DUA.md) before requesting
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  Email Address: text
  Country: country
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    options:
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  I agree to use this dataset for non-commercial use ONLY: checkbox
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PMoC3D: Paired Motion-Corrupted 3D Brain MRI data

PMoC3D, a real-world dataset consisting of Paired Motion-Corrupted 3D brain MRI data. PMoC3D consists of the unprocessed undersampled measurement data of 27 motion-corrupted volumes from 8 subjects alongside corresponding motion-free reference scans.

Raw Measurements

All raw data are located under sourcedata/, organized by subject and scan:

sub-0X/
- sub-0{subject}_run-00_kspace/ — the motion-free reference acquisition
  - kspace: Raw complex-valued k-space data (dimensions: nCoils × nKy × nKz × nReadout)
  - mask: Binary acceleration mask applied in the two phase-encode dimensions
  - ky_points, kz_points: Shot-by-shot sampling indices
- sub-0{subject}_run-01_kspace/, sub-0{subject}_run-02_kspace/, sub-0{subject}_run-03_kspace/ — scans acquired with intentional motion
- (optional) sub-0{subject}_run-04_kspace/ — scans containing involuntary motion (only for subjects 3, 5, and 8)
- sub-0{subject}_smaps/
  - sens_maps: Coil sensitivity maps (dimensions: nCoils × nx × ny × nz)

Reconstruction Results

Reconstructions for each algorithm are stored under reconstructions/:

L1_noMoCo/ — classical L1–wavelet reconstruction without motion correction
AltOpt/ — results from the alternating-optimization method
MotionTTT/ — results from the test-time-training U-Net approach
stacked_unet/ — results from the end-to-end deep stacking U-Net
Reference/ — L1 reconstruction of the motion-free reference scans

Each method’s directory contains one .pt file per scan (S{subject}_{scan}.pt), representing the final 3D reconstruction volume.