{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:MU3HHBJDQWAK45IPM3T7PZFQKJ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"51c5ade2a9f2cedb34ad447abfa16b8d51a142a9c6f3d3c3540e91e7ef98e52b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2025-01-28T12:57:57Z","title_canon_sha256":"1ed005ffe0bd27413a7566fb7ce30605cbee820a81813dcf17b6722bb16c08ff"},"schema_version":"1.0","source":{"id":"2501.16910","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.16910","created_at":"2026-07-05T10:06:20Z"},{"alias_kind":"arxiv_version","alias_value":"2501.16910v1","created_at":"2026-07-05T10:06:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.16910","created_at":"2026-07-05T10:06:20Z"},{"alias_kind":"pith_short_12","alias_value":"MU3HHBJDQWAK","created_at":"2026-07-05T10:06:20Z"},{"alias_kind":"pith_short_16","alias_value":"MU3HHBJDQWAK45IP","created_at":"2026-07-05T10:06:20Z"},{"alias_kind":"pith_short_8","alias_value":"MU3HHBJD","created_at":"2026-07-05T10:06:20Z"}],"graph_snapshots":[{"event_id":"sha256:171fc2879844bced0c3ce6b4d13786b23028769f5b9759fcf2950cbce90b3ebd","target":"graph","created_at":"2026-07-05T10:06:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2501.16910/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Current guidelines for elective nodal irradiation in oropharyngeal squamous cell carcinoma (OPSCC) recommend including large portions of the contralateral lymph system in the clinical target volume (CTV-N), even for lateralized tumors with no clinical lymph node involvement in the contralateral neck. This study introduces a probabilistic model of bilateral lymphatic tumor progression in OPSCC to estimate personalized risks of occult disease in specific lymph node levels (LNLs) based on clinical involvement, T-stage, and tumor lateralization. Building on a previously developed hidden Markov mod","authors_text":"Jan Unkelbach, Panagiotis Balermpas, Roman Ludwig, Sergi Benavente, Yoel Perez Haas","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2025-01-28T12:57:57Z","title":"A Probabilistic Model of Bilateral Lymphatic Spread in Head and Neck Cancer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.16910","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1371b5a2795a351e567abcffce39a032b05ea48254b1b721cceba4c5f48ff141","target":"record","created_at":"2026-07-05T10:06:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"51c5ade2a9f2cedb34ad447abfa16b8d51a142a9c6f3d3c3540e91e7ef98e52b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2025-01-28T12:57:57Z","title_canon_sha256":"1ed005ffe0bd27413a7566fb7ce30605cbee820a81813dcf17b6722bb16c08ff"},"schema_version":"1.0","source":{"id":"2501.16910","kind":"arxiv","version":1}},"canonical_sha256":"65367385238580ae750f66e7f7e4b0525bd2e8d978d91973bef79b4b4d774752","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65367385238580ae750f66e7f7e4b0525bd2e8d978d91973bef79b4b4d774752","first_computed_at":"2026-07-05T10:06:20.256352Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:06:20.256352Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mgWN8QCWbS6+UIA8BnWbgaNb/WWGNC9pDpNzqf/+IXupstzT/djKT86yLIVdnBP9sVqXeqKT06o7vl9h5zEjBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:06:20.256816Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.16910","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1371b5a2795a351e567abcffce39a032b05ea48254b1b721cceba4c5f48ff141","sha256:171fc2879844bced0c3ce6b4d13786b23028769f5b9759fcf2950cbce90b3ebd"],"state_sha256":"7defd595effa2b9d0528aeb23215b250700eb21dd91f7fb31305db8909ec9776"}