Datasets:
slice_index int32 10 79 | split stringclasses 1
value | image imagewidth (px) 512 512 | mask_staple imagewidth (px) 512 512 | overlay_staple imagewidth (px) 512 512 | mask_annotator1 imagewidth (px) 512 512 | mask_annotator2 imagewidth (px) 512 512 | mask_annotator3 imagewidth (px) 512 512 | ggo_pixels_staple int32 6.7k 24.4k | consolidation_pixels_staple int32 0 570 |
|---|---|---|---|---|---|---|---|---|---|
10 | train | 14,994 | 0 | ||||||
11 | train | 14,711 | 0 | ||||||
12 | train | 12,900 | 0 | ||||||
13 | train | 13,141 | 124 | ||||||
14 | train | 14,396 | 0 | ||||||
15 | train | 8,205 | 0 | ||||||
16 | train | 8,826 | 0 | ||||||
17 | train | 9,356 | 0 | ||||||
18 | train | 10,480 | 72 | ||||||
19 | train | 10,273 | 78 | ||||||
50 | train | 12,774 | 323 | ||||||
51 | train | 13,056 | 245 | ||||||
52 | train | 11,650 | 254 | ||||||
53 | train | 11,728 | 234 | ||||||
54 | train | 11,654 | 0 | ||||||
55 | train | 13,446 | 0 | ||||||
56 | train | 13,091 | 0 | ||||||
57 | train | 6,756 | 142 | ||||||
58 | train | 6,702 | 471 | ||||||
59 | train | 7,233 | 570 | ||||||
70 | train | 24,380 | 0 | ||||||
71 | train | 23,445 | 0 | ||||||
72 | train | 23,654 | 0 | ||||||
73 | train | 22,563 | 0 | ||||||
74 | train | 22,535 | 0 | ||||||
75 | train | 23,481 | 0 | ||||||
76 | train | 16,994 | 0 | ||||||
77 | train | 17,501 | 0 | ||||||
78 | train | 15,450 | 0 | ||||||
79 | train | 16,024 | 0 |
Long COVID Iowa-UNICAMP (LongCIU)
Long COVID Iowa-UNICAMP dataset: 90 axial chest CT slices with manual segmentation of ground glass opacities (GGO) and parenchymal consolidations, independently annotated by three expert annotator pairs. Provides both the three individual annotations and a STAPLE consensus recommended as ground truth.
Overview
- Modality: CT (axial)
- Body part: Lung (GGO / consolidation in Long COVID patients)
- Samples: 90 axial CT slices (stacked along axis 2 of a single NIfTI volume)
- Classes: 0 = background, 1 = GGO, 2 = consolidation
Files
| File | Description |
|---|---|
longciu_img.nii.gz |
Image volume (512, 512, 90) — each slice is an independent patient |
longciu_STAPLE_tgt.nii.gz |
Recommended ground truth (STAPLE consensus of the 3 annotators) |
longciu_1_tgt.nii.gz |
Annotator pair 1 mask (for inter-rater study) |
longciu_2_tgt.nii.gz |
Annotator pair 2 mask (for inter-rater study) |
longciu_3_tgt.nii.gz |
Annotator pair 3 mask (for inter-rater study) |
longciu_medpseg_output.nii.gz |
MedPSeg baseline model prediction (for comparison) |
longciu_splits.json |
Train / val / test split indices over slice axis |
staple_pub_stats.json |
STAPLE statistics published with the paper |
README.txt |
Original dataset README from the authors |
Splits (indices into slice axis of longciu_img.nii.gz)
- train: 30 slices
- val: 20 slices
- test: 40 slices
License
Open Data Commons Attribution License (ODC-By) v1.0.
Citation
Carmo, D. S., Pezzulo, A. A, Villacreses, P. A., Comellas A. P., Eisenbeisz, M. L., Anderson, R. L., Van Dorin, S. E., Rittner, L., Lotufo, R. A., Gerard, S. E., Reinhardt, J. M., Comellas, A. P. (2024). Long COVID Iowa-UNICAMP [dataset]. University of Iowa. https://doi.org/10.25820/data.007301
Paper (Scientific Data, Nature, 2025): https://www.nature.com/articles/s41597-025-04709-2
Source code: https://github.com/MICLab-Unicamp/LongCIU
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