Pith Number

pith:ICBJ7MWD

pith:2026:ICBJ7MWDCSVURZGWCT6UDDPTK7

not attested not anchored not stored refs pending

CTseg: A Tool for Brain CT Segmentation, Spatial Normalisation, and Volumetrics

Mikael Brudfors

CTseg tool produces accurate brain tissue maps and volumes from routine CT scans

arxiv:2605.05154 v2 · 2026-05-06 · eess.IV

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\usepackage{pith}
\pithnumber{ICBJ7MWDCSVURZGWCT6UDDPTK7}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

CTseg significantly outperformed this baseline for segmentation and normalisation, showed stronger TBV agreement, and achieved comparable TIV agreement.

C2weakest assumption

That the MRI-derived silver standard provides a sufficiently accurate reference for true tissue boundaries visible in CT images, and that the paired MR/CT scans used for validation are representative of typical clinical CT data without preprocessing.

C3one line summary

CTseg delivers accurate CT brain segmentation, spatial normalization, and volumetrics that outperform direct MRI-tool application on CT scans, validated on paired MR/CT data.

Receipt and verification

First computed	2026-05-29T01:05:11.895053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40829fb2c314ab48e4d614fd418df357f467773ef2612c632f423071735f20eb

Aliases

arxiv: 2605.05154 · arxiv_version: 2605.05154v2 · doi: 10.48550/arxiv.2605.05154 · pith_short_12: ICBJ7MWDCSVU · pith_short_16: ICBJ7MWDCSVURZGW · pith_short_8: ICBJ7MWD

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ICBJ7MWDCSVURZGWCT6UDDPTK7 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 40829fb2c314ab48e4d614fd418df357f467773ef2612c632f423071735f20eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3adf175cf0dac3585df633955bad23ebc3aa1fe10d5c57d7ff605c0f2e835b5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2026-05-06T17:25:54Z",
    "title_canon_sha256": "adf1fc6b24d568ae538bce01b61c6c0704ae9b72e3381ef1d09e2b8034e2528d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.05154",
    "kind": "arxiv",
    "version": 2
  }
}