Pith Number

pith:CONITIDR

pith:2026:CONITIDRIIGSXEKAGCGUKSUGY2

not attested not anchored not stored refs resolved

Towards Real-Time Autonomous Navigation: Transformer-Based Catheter Tip Tracking in Fluoroscopy

Alejandro Granados, Benjamin Jackson, Harry Robertshaw, Nikola Fischer, S.M.Hadi Sadati, Thomas C. Booth, Tom Vercauteren, Weiyuan Deng, Yanghe Hao

A two-class SegFormer model tracks catheter tips in fluoroscopy at 4.44 mm mean error, supporting real-time robotic navigation for stroke treatment.

arxiv:2605.14253 v1 · 2026-05-14 · cs.CV · cs.LG

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\pithnumber{CONITIDRIIGSXEKAGCGUKSUGY2}

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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

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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

On manually-labeled moderate complexity fluoroscopic video data, the two-class SegFormer achieved a mean absolute error of 4.44 mm, outperforming U-Net (4.60 mm), U-Net+Transformer (6.20 mm) and all three-class models (5.19-7.74 mm).

C2weakest assumption

The manually-labeled moderate complexity fluoroscopic video data and the described post-processing steps (two-step component filtering, one-pixel medial skeletonization, greedy arc-length path following with contour fall-back) will generalize to the full range of clinical imaging conditions including heavy occlusion and varying device types.

C3one line summary

SegFormer two-class segmentation tracks catheter tips in fluoroscopy with 4.44 mm mean absolute error on moderate-complexity data, outperforming U-Net variants and prior CathAction benchmarks by up to 5% Dice.

References

23 extracted · 23 resolved · 0 Pith anchors

[1] Ashutosh P. Jadhav, Shashvat M. Desai, and Tudor G. Jovin. Indications for mechanical thrombectomy for acute ischemic stroke: Current guidelines and beyond.Neurology, 97, 2021 2021

[2] Time to treatment with endovascular thrombectomy and outcomes from ischemic stroke: Ameta-analysis.JAMA - Journal of the American Medical Association, 316:1279–1288, 9 2016 2016

[3] Ssnap annual report 2024 2024

[4] O. A. Berkhemer, P. S. S. Fransen, D. Beumer, L. A. van den Berg, H. F. Lingsma, A. J. Yoo, W. J. Schonewille, J. A. V os, P. J. Nederkoorn, M. J. H. Wermer, M. A. A. van Walderveen, J. Staals, J. Hof 2015

[5] Mauro, and James A 2009

Receipt and verification

First computed	2026-05-17T23:39:10.548853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

139a89a071420d2b9140308d454a86c6b0b406cfaf7b1087d00d63a83e5b0b68

Aliases

arxiv: 2605.14253 · arxiv_version: 2605.14253v1 · doi: 10.48550/arxiv.2605.14253 · pith_short_12: CONITIDRIIGS · pith_short_16: CONITIDRIIGSXEKA · pith_short_8: CONITIDR

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/CONITIDRIIGSXEKAGCGUKSUGY2 \
  | 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: 139a89a071420d2b9140308d454a86c6b0b406cfaf7b1087d00d63a83e5b0b68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61ddfc7436fd038b5b6e01d79dd2e24e2001447295db570604e6f0b2f9c130d3",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-14T01:42:56Z",
    "title_canon_sha256": "1b1851436b78fd3bb50a4d25fd072a56229751e311dab5440135c5cefb3e9101"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14253",
    "kind": "arxiv",
    "version": 1
  }
}