Pith Number

pith:BGHEEHJA

pith:2026:BGHEEHJASENPYOMFSTPNI2DRYV

not attested not anchored not stored refs pending

ECHO: Efficient Chest X-ray Report Generation with One-step Block Diffusion

Hao Liu, Jile Jiao, Lifeng Chen, Tao Sun, Tianqi You, Xiaofeng Mou, Xiao Han, Xiaojie Jin, Yi Xu, Zhicai Ou, Zhimin Bao

A one-step block diffusion model generates clinically accurate chest X-ray reports eight times faster than autoregressive methods by distilling joint token dependencies.

arxiv:2604.09450 v2 · 2026-04-10 · cs.LG · cs.AI · eess.IV

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\pithnumber{BGHEEHJASENPYOMFSTPNI2DRYV}

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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

ECHO surpasses state-of-the-art autoregressive methods, improving RaTE and SemScore by 64.33% and 60.58% respectively, while achieving an 8× inference speedup without compromising clinical accuracy.

C2weakest assumption

That the Direct Conditional Distillation framework successfully encodes joint token dependencies from on-policy trajectories to overcome mean-field bias in one-step generation, without introducing new coherence failures not captured by the reported metrics.

C3one line summary

ECHO is a one-step block diffusion VLM for chest X-ray reports that improves RaTE and SemScore by over 60% while delivering 8x faster inference than autoregressive baselines.

Cited by

1 paper in Pith

AnchorDiff: Topology-Aware Masked Diffusion with Confidence-based Rewriting for Radiology Report Generation

Receipt and verification

First computed	2026-05-20T00:04:31.208955Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

098e421d20911afc398594ded46871c55d5f5558e0651f9786c464ba0100cfb6

Aliases

arxiv: 2604.09450 · arxiv_version: 2604.09450v2 · doi: 10.48550/arxiv.2604.09450 · pith_short_12: BGHEEHJASENP · pith_short_16: BGHEEHJASENPYOMF · pith_short_8: BGHEEHJA

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/BGHEEHJASENPYOMFSTPNI2DRYV \
  | 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: 098e421d20911afc398594ded46871c55d5f5558e0651f9786c464ba0100cfb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "689ae9778f9f72a1df5c06ff46733e928ce5dc0c1d874f7c4852dca7abcfb449",
    "cross_cats_sorted": [
      "cs.AI",
      "eess.IV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-04-10T16:07:14Z",
    "title_canon_sha256": "b2af0b2c94d7ddaf1f807a8ba8fba25bf1d35880301fe0a175e7c792bb2b7b7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.09450",
    "kind": "arxiv",
    "version": 2
  }
}