Sample data

The Sample Data dialog in Tetravox — a card per dataset with a thumbnail, description, size and licence, and one Download & open button that fetches it once and opens it as a ready-made scene.

Public datasets to try Tetravox on, the same list as File ▸ Sample Data… in the app. In the app one click downloads a sample into the cache (once, verified by sha256) and opens it as a ready-made scene — layout, colour maps, thresholds and camera already set; here every file is a direct link, for scripting or for a machine without the app. Nothing on this page is original work — each sample keeps the licence of its source.

The files are hosted the way 3D Slicer's SlicerDataStore hosts its sample data: as assets of one GitHub release, named by their own sha256, at https://github.com/idossha/tetravox-sample-data/releases/download/SHA256/<sha256>. Non-commercial data (CC-BY-NC) is not re-hosted; those links go to the source.

Head (SimNIBS ernie)

Head MRI — T1 — A 1 mm T1-weighted MRI of the SimNIBS example subject. The plain starting point: window/level, the four panes, the crosshair.
13 MB · SimNIBS example dataset (subject ernie) · GPL-3.0
Files: T1.nii.gz (13 MB)

Head MRI + tissue segmentation — The same T1 with SimNIBS's tissue label map and its LUT: skin, bone, CSF, grey and white matter as fill or outline, with the region panel.
13 MB · SimNIBS example dataset (subject ernie) · GPL-3.0
Files: T1.nii.gz (13 MB), labeling.nii.gz (918 kB), labeling_LUT.txt (2 kB)

Head MRI + pial surfaces — Both pial surfaces as GIfTI over the T1: contours on the slices, shaded hemispheres in 3D.
28 MB · SimNIBS example dataset (subject ernie) · GPL-3.0
Files: T1.nii.gz (13 MB), lh.pial.gii (7.6 MB), rh.pial.gii (7.6 MB)

Head MRI + EEG 10-10 electrodes — A 10-10 electrode net as a Gmsh view over the T1 — labelled points on the scalp.
13 MB · SimNIBS example dataset (subject ernie) · GPL-3.0
Files: T1.nii.gz (13 MB), EEG10-10_UI_Jurak_2007.geo (11 kB)

TI field on the grey-matter mesh — A temporal-interference simulation on ernie: the grey-matter tetrahedral mesh carrying TI_max, and the same field resampled to a NIfTI over the T1. Field colouring, thresholds, clip planes.
90 MB · SimNIBS example subject, simulated with TI-Toolbox · GPL-3.0 (derived from the SimNIBS example dataset)
Files: T1.nii.gz (13 MB), grey_TI.msh (61 MB), TI_max.nii.gz (17 MB)

Body

Thorax/abdomen CT + organ labels (small) — TotalSegmentator's 3 mm test CT with its multi-organ segmentation. Half a megabyte — the quickest sample to try.
507 kB · TotalSegmentator test files · Apache-2.0
Files: example_ct_sm.nii.gz (472 kB), example_seg_fast.nii.gz (35 kB)

Abdominal CT + 15-organ labels — An AMOS22 abdominal CT with spleen, kidneys, liver, stomach, pancreas, aorta, bladder and more labelled; a LUT with the official names.
16 MB · AMOS22 (case 0004) · CC-BY-4.0
Files: amos_0004_ct.nii.gz (16 MB), amos_0004_seg.nii.gz (71 kB), amos_0004_seg_LUT.txt (1 kB)

Abdominal T1 MRI + organ labels — An AMOS22 abdominal T1-weighted MRI with the same organ labels — the soft-tissue counterpart of the CT sample.
3.8 MB · AMOS22 (case 0555) · CC-BY-4.0
Files: amos_0555_mri.nii.gz (3.7 MB), amos_0555_seg.nii.gz (49 kB), amos_0555_seg_LUT.txt (1 kB)

Contrast chest/abdomen CT — A contrast CT through the heart and lung bases — the lung, bone and soft-tissue window presets.
7.4 MB · niivue-images · BSD-2-Clause
Files: CT_Abdo.nii.gz (7.4 MB)

Chest CT + per-vertebra labels — A full chest CT with every vertebra labelled (VerSe numbering): the spine sample, and per-vertebra isosurfaces in 3D. Fetched from CTSpine1K directly — its licence is non-commercial, so it is not re-hosted.
13 MB · CTSpine1K (COVID-19-CT-Seg case A-0377) · CC-BY-NC-SA-4.0
Files: volume-covid19-A-0377_ct.nii.gz (13 MB), volume-covid19-A-0377_ct_seg.nii.gz (42 kB), volume-covid19-A-0377_ct_seg_LUT.txt (1 kB)

Where the app puts them

Downloads land in the app's cache — ~/Library/Application Support/Tetravox/sample-data/ on macOS, ~/.config/Tetravox/sample-data/ on Linux, %APPDATA%\Tetravox\sample-data\ on Windows — one directory per sample, so a volume and its _LUT.txt stay side by side. Show cache in the dialog opens it; Remove deletes one sample. A file already in the cache is re-hashed before it is opened, so a partial or altered download is fetched again rather than trusted.