{
  "dataset": "Hackathon Ultrasound Dataset",
  "base_url": "https://pub-cd7bc0d7896e4e629d08af01e1a0f459.r2.dev",
  "generated": "2026-08-22",
  "files": [
    {
      "recording": "temporal",
      "acquisition_id": "20260812-045532",
      "representation": "raw HDF5",
      "path": "raw/temporal-20260812-045532-p0.h5",
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      "recording": "temporal",
      "acquisition_id": "20260812-045532",
      "representation": "standard DAS HDF5",
      "grid": "lambda spacing in x and z",
      "path": "beamformed/temporal-20260812-045532-standard-das-lambda.h5",
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    {
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      "acquisition_id": "20260812-045532",
      "representation": "standard DAS HDF5",
      "grid": "lambda/2 spacing in x and z",
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      "acquisition_id": "20260812-045532",
      "representation": "standard DAS HDF5 subset",
      "grid": "lambda spacing in x and z",
      "frames": 1024,
      "duration_seconds": 9.712,
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      "recording": "temporal",
      "acquisition_id": "20260812-045532",
      "representation": "standard DAS HDF5 subset",
      "grid": "lambda/2 spacing in x and z",
      "frames": 1024,
      "duration_seconds": 9.712,
      "path": "beamformed/subsets/temporal-20260812-045532-standard-das-lambda-over-2-first-1024-frames.h5",
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    {
      "recording": "occipital",
      "acquisition_id": "20260812-053159",
      "representation": "raw HDF5",
      "path": "raw/occipital-20260812-053159-p0.h5",
      "size_bytes": 19829527936,
      "sha256": "42108d4c47468d6e7846306f929b2115f2a432c7b1fdc4866c3851d58f51ffad"
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    {
      "recording": "occipital",
      "acquisition_id": "20260812-053159",
      "representation": "standard DAS HDF5",
      "grid": "lambda spacing in x and z",
      "path": "beamformed/occipital-20260812-053159-standard-das-lambda.h5",
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    {
      "recording": "occipital",
      "acquisition_id": "20260812-053159",
      "representation": "standard DAS HDF5",
      "grid": "lambda/2 spacing in x and z",
      "path": "beamformed/occipital-20260812-053159-standard-das-lambda-over-2.h5",
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    {
      "recording": "occipital",
      "acquisition_id": "20260812-053159",
      "representation": "standard DAS HDF5 subset",
      "grid": "lambda spacing in x and z",
      "frames": 1024,
      "duration_seconds": 6.335,
      "path": "beamformed/subsets/occipital-20260812-053159-standard-das-lambda-first-1024-frames.h5",
      "size_bytes": 2395253736
    },
    {
      "recording": "occipital",
      "acquisition_id": "20260812-053159",
      "representation": "standard DAS HDF5 subset",
      "grid": "lambda/2 spacing in x and z",
      "frames": 1024,
      "duration_seconds": 6.335,
      "path": "beamformed/subsets/occipital-20260812-053159-standard-das-lambda-over-2-first-1024-frames.h5",
      "size_bytes": 9456658092
    },
    {
      "recording": "temporal",
      "acquisition_id": "20260812-044851",
      "representation": "SVD-filtered magnitude HDF5",
      "grid": "121 elevation planes x 94 z x 111 x; elevation half-width 20 mm",
      "frames": 5487,
      "duration_seconds": 48.386,
      "path": "svd-filtered/temporal-20260812-044851-svd-filtered-cone25-cut8.h5",
      "size_bytes": 27715129320,
      "notes": "Depth-gained, SVD-filtered magnitude: the array the detector and linker consume, i.e. the last stage before tracking. 25 deg elevation cone applied at read; 23 blocks of ~239 frames with the leading 8 temporal-SVD components removed per block; depth gain applied to the complex block BEFORE the SVD. Corresponds to the published track set 'ROBUSTV2-fair 044851 manybubble (unfair detect, 25deg cone, subvox, mutual, slider)'."
    }
  ],
  "notes": [
    "Public access is read-only.",
    "Use resumable downloads for these large files."
  ]
}