{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:YDXYVUPOSMEVHFO47PXNN7EPTZ","short_pith_number":"pith:YDXYVUPO","canonical_record":{"source":{"id":"2507.19230","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2025-07-25T12:55:48Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6501516640238ba18f3ef0f72de5bea15ae12522cfbd58073323f927fa442077","abstract_canon_sha256":"f1b3844126c4223111ddc7cf966030976860fc6a451eca5dfb373400c146cc6f"},"schema_version":"1.0"},"canonical_sha256":"c0ef8ad1ee93095395dcfbeed6fc8f9e720e40497f74f1079986b566c3657dd6","source":{"kind":"arxiv","id":"2507.19230","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.19230","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"arxiv_version","alias_value":"2507.19230v1","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.19230","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"pith_short_12","alias_value":"YDXYVUPOSMEV","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"pith_short_16","alias_value":"YDXYVUPOSMEVHFO4","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"pith_short_8","alias_value":"YDXYVUPO","created_at":"2026-07-05T11:43:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:YDXYVUPOSMEVHFO47PXNN7EPTZ","target":"record","payload":{"canonical_record":{"source":{"id":"2507.19230","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2025-07-25T12:55:48Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6501516640238ba18f3ef0f72de5bea15ae12522cfbd58073323f927fa442077","abstract_canon_sha256":"f1b3844126c4223111ddc7cf966030976860fc6a451eca5dfb373400c146cc6f"},"schema_version":"1.0"},"canonical_sha256":"c0ef8ad1ee93095395dcfbeed6fc8f9e720e40497f74f1079986b566c3657dd6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:43:21.873803Z","signature_b64":"jW0XSNgWzwdvaq5H1oP7FZzgP8VRutWoQJaiaGLY9ACGPoaMDyYzTN3daoO7Aja9EdIlYquf3VcA3LgVHPtnBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c0ef8ad1ee93095395dcfbeed6fc8f9e720e40497f74f1079986b566c3657dd6","last_reissued_at":"2026-07-05T11:43:21.873345Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:43:21.873345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.19230","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:43:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2chPNkJ/pMal8cFKgV/sI2l7uKpC4SlymaksTPk024rsBO/vTwMrgRH3KHhmgL6G6xZmds210qKJ8qWSe1ZuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T23:21:25.672985Z"},"content_sha256":"a016a5c44b4c8dd7c202956b3d8b8712a3f642c714ebeb3bbeec595c733951ab","schema_version":"1.0","event_id":"sha256:a016a5c44b4c8dd7c202956b3d8b8712a3f642c714ebeb3bbeec595c733951ab"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:YDXYVUPOSMEVHFO47PXNN7EPTZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unstable Prompts, Unreliable Segmentations: A Challenge for Longitudinal Lesion Analysis","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Alessa Hering, Ewoud Smit, Mathias Prokop, Niels Rocholl","submitted_at":"2025-07-25T12:55:48Z","abstract_excerpt":"Longitudinal lesion analysis is crucial for oncological care, yet automated tools often struggle with temporal consistency. While universal lesion segmentation models have advanced, they are typically designed for single time points. This paper investigates the performance of the ULS23 segmentation model in a longitudinal context. Using a public clinical dataset of baseline and follow-up CT scans, we evaluated the model's ability to segment and track lesions over time. We identified two critical, interconnected failure modes: a sharp degradation in segmentation quality in follow-up cases due t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.19230","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.19230/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:43:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ChbosEZAOgUqc6yjmYps54KlbXLsoGkYA4lPw4x6UKsoL8fZPBNbbZHpJZoWFB1bBk7SKFe+RkBdpUgRB9jsBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T23:21:25.673368Z"},"content_sha256":"1205d9e173d18a6d42db6a2fe86d74461dc0c3d0d91b36cef0f6491d312efa35","schema_version":"1.0","event_id":"sha256:1205d9e173d18a6d42db6a2fe86d74461dc0c3d0d91b36cef0f6491d312efa35"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YDXYVUPOSMEVHFO47PXNN7EPTZ/bundle.json","state_url":"https://pith.science/pith/YDXYVUPOSMEVHFO47PXNN7EPTZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YDXYVUPOSMEVHFO47PXNN7EPTZ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-17T23:21:25Z","links":{"resolver":"https://pith.science/pith/YDXYVUPOSMEVHFO47PXNN7EPTZ","bundle":"https://pith.science/pith/YDXYVUPOSMEVHFO47PXNN7EPTZ/bundle.json","state":"https://pith.science/pith/YDXYVUPOSMEVHFO47PXNN7EPTZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YDXYVUPOSMEVHFO47PXNN7EPTZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:YDXYVUPOSMEVHFO47PXNN7EPTZ","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":"f1b3844126c4223111ddc7cf966030976860fc6a451eca5dfb373400c146cc6f","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2025-07-25T12:55:48Z","title_canon_sha256":"6501516640238ba18f3ef0f72de5bea15ae12522cfbd58073323f927fa442077"},"schema_version":"1.0","source":{"id":"2507.19230","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.19230","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"arxiv_version","alias_value":"2507.19230v1","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.19230","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"pith_short_12","alias_value":"YDXYVUPOSMEV","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"pith_short_16","alias_value":"YDXYVUPOSMEVHFO4","created_at":"2026-07-05T11:43:21Z"},{"alias_kind":"pith_short_8","alias_value":"YDXYVUPO","created_at":"2026-07-05T11:43:21Z"}],"graph_snapshots":[{"event_id":"sha256:1205d9e173d18a6d42db6a2fe86d74461dc0c3d0d91b36cef0f6491d312efa35","target":"graph","created_at":"2026-07-05T11:43:21Z","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/2507.19230/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Longitudinal lesion analysis is crucial for oncological care, yet automated tools often struggle with temporal consistency. While universal lesion segmentation models have advanced, they are typically designed for single time points. This paper investigates the performance of the ULS23 segmentation model in a longitudinal context. Using a public clinical dataset of baseline and follow-up CT scans, we evaluated the model's ability to segment and track lesions over time. We identified two critical, interconnected failure modes: a sharp degradation in segmentation quality in follow-up cases due t","authors_text":"Alessa Hering, Ewoud Smit, Mathias Prokop, Niels Rocholl","cross_cats":["cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2025-07-25T12:55:48Z","title":"Unstable Prompts, Unreliable Segmentations: A Challenge for Longitudinal Lesion Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.19230","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:a016a5c44b4c8dd7c202956b3d8b8712a3f642c714ebeb3bbeec595c733951ab","target":"record","created_at":"2026-07-05T11:43:21Z","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":"f1b3844126c4223111ddc7cf966030976860fc6a451eca5dfb373400c146cc6f","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2025-07-25T12:55:48Z","title_canon_sha256":"6501516640238ba18f3ef0f72de5bea15ae12522cfbd58073323f927fa442077"},"schema_version":"1.0","source":{"id":"2507.19230","kind":"arxiv","version":1}},"canonical_sha256":"c0ef8ad1ee93095395dcfbeed6fc8f9e720e40497f74f1079986b566c3657dd6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c0ef8ad1ee93095395dcfbeed6fc8f9e720e40497f74f1079986b566c3657dd6","first_computed_at":"2026-07-05T11:43:21.873345Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:43:21.873345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jW0XSNgWzwdvaq5H1oP7FZzgP8VRutWoQJaiaGLY9ACGPoaMDyYzTN3daoO7Aja9EdIlYquf3VcA3LgVHPtnBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:43:21.873803Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.19230","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a016a5c44b4c8dd7c202956b3d8b8712a3f642c714ebeb3bbeec595c733951ab","sha256:1205d9e173d18a6d42db6a2fe86d74461dc0c3d0d91b36cef0f6491d312efa35"],"state_sha256":"61c2bd84e9d1dbc6b7aeb833c134481ee0f1daa64357c99a9698ba742fea69ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RjhjFxE1ueU0jUPEEIJl1ASYfTHkiiIb0m3BpmG+tBVhwRuGq8tvLeu3ag22A6uI81irRmN/MF/ogyG1gm21Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T23:21:25.675722Z","bundle_sha256":"cc76ef01d5fa79ebcf337a26cd27072b3f7b7dcd9a94846eaa5e361e05097b14"}}