{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PYJK4X7QJNPJH574B2XFWBTLWZ","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":"b6cc6725653e491ad4b877f346232b1c43b33b1e1fb69cac849173d8594330aa","cross_cats_sorted":["physics.med-ph"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"eess.IV","submitted_at":"2025-11-17T12:43:48Z","title_canon_sha256":"5d15e1071c9e99d7d2287baac53b026adc301e762617d73ca66b63682a8e9633"},"schema_version":"1.0","source":{"id":"2511.13310","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.13310","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"arxiv_version","alias_value":"2511.13310v2","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.13310","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"pith_short_12","alias_value":"PYJK4X7QJNPJ","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"pith_short_16","alias_value":"PYJK4X7QJNPJH574","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"pith_short_8","alias_value":"PYJK4X7Q","created_at":"2026-05-20T00:05:37Z"}],"graph_snapshots":[{"event_id":"sha256:fd4e58fd5ea12361cedaadea4746b96f5ab8ff65ba0ede1398270efc1276ed02","target":"graph","created_at":"2026-05-20T00:05:37Z","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/2511.13310/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Computed tomography perfusion (CTP) and magnetic resonance perfusion (MRP) are widely used in acute ischemic stroke assessment and other cerebrovascular conditions to generate quantitative maps of cerebral hemodynamics. While commercial perfusion analysis software exists, it is often costly, closed source, and lacks customizability. This work introduces PyPeT, an openly available Python Perfusion Tool for head CTP and MRP processing. PyPeT is capable of producing cerebral blood flow (CBF), cerebral blood volume (CBV), mean transit time (MTT), time-to-peak (TTP), and time-to-maximum (Tmax) maps","authors_text":"Marijn Borghouts, Ruisheng Su","cross_cats":["physics.med-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"eess.IV","submitted_at":"2025-11-17T12:43:48Z","title":"PyPeT: A Python Perfusion Tool for Automated Quantitative Brain CT and MR Perfusion Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.13310","kind":"arxiv","version":2},"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:c9545aee2b0f4beb60bd235abbad9ce817ee7699522a36140a61ef9059487418","target":"record","created_at":"2026-05-20T00:05:37Z","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":"b6cc6725653e491ad4b877f346232b1c43b33b1e1fb69cac849173d8594330aa","cross_cats_sorted":["physics.med-ph"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"eess.IV","submitted_at":"2025-11-17T12:43:48Z","title_canon_sha256":"5d15e1071c9e99d7d2287baac53b026adc301e762617d73ca66b63682a8e9633"},"schema_version":"1.0","source":{"id":"2511.13310","kind":"arxiv","version":2}},"canonical_sha256":"7e12ae5ff04b5e93f7fc0eae5b066bb660f1b02ef3f07f89f03982749606fdf7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e12ae5ff04b5e93f7fc0eae5b066bb660f1b02ef3f07f89f03982749606fdf7","first_computed_at":"2026-05-20T00:05:37.488763Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:05:37.488763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xwNkPhDnIygXGuaan9B+R5Bq1Xv2hQJftEzLb3DpsU24Eh/aeDxP0UnBoMQD36XZQFDh4GEAPU1GI7xMJo5GCw==","signature_status":"signed_v1","signed_at":"2026-05-20T00:05:37.489643Z","signed_message":"canonical_sha256_bytes"},"source_id":"2511.13310","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9545aee2b0f4beb60bd235abbad9ce817ee7699522a36140a61ef9059487418","sha256:fd4e58fd5ea12361cedaadea4746b96f5ab8ff65ba0ede1398270efc1276ed02"],"state_sha256":"f6d6240198242dadddc7aff52a57fa02955cb84b8fb015fa10a386d3757f876b"}