{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KUYUDCR3X5Z77PIUUDMGBI2FAR","short_pith_number":"pith:KUYUDCR3","canonical_record":{"source":{"id":"2010.01617","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-10-04T16:14:45Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"19c1c00dd2eee1ce5d079cecdc5f25adf5db1357d62ac4ee95a25b1a8aad4637","abstract_canon_sha256":"ec97e6cfab72c684c5ac282cca13b6a30f6c1586f3f541676030ba3974d9ca66"},"schema_version":"1.0"},"canonical_sha256":"5531418a3bbf73ffbd14a0d860a3450477661973d95273599865a232a4111abc","source":{"kind":"arxiv","id":"2010.01617","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.01617","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"arxiv_version","alias_value":"2010.01617v1","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.01617","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"pith_short_12","alias_value":"KUYUDCR3X5Z7","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"pith_short_16","alias_value":"KUYUDCR3X5Z77PIU","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"pith_short_8","alias_value":"KUYUDCR3","created_at":"2026-07-05T04:17:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KUYUDCR3X5Z77PIUUDMGBI2FAR","target":"record","payload":{"canonical_record":{"source":{"id":"2010.01617","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-10-04T16:14:45Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"19c1c00dd2eee1ce5d079cecdc5f25adf5db1357d62ac4ee95a25b1a8aad4637","abstract_canon_sha256":"ec97e6cfab72c684c5ac282cca13b6a30f6c1586f3f541676030ba3974d9ca66"},"schema_version":"1.0"},"canonical_sha256":"5531418a3bbf73ffbd14a0d860a3450477661973d95273599865a232a4111abc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:17:34.084154Z","signature_b64":"uNY9o11ioIWGNFQRsbkL1cO4TTNjfHSNyHC8ozC/8o8NH1fCV2Hp8HalOYMVv005QZpqt4rPNWs9Hif+aKC1DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5531418a3bbf73ffbd14a0d860a3450477661973d95273599865a232a4111abc","last_reissued_at":"2026-07-05T04:17:34.083440Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:17:34.083440Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.01617","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":"2026-07-05T04:17:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8rW/DVcOylgYQekYmL8QcWTQqxee8PB37CP8BdxOpzFRDP679KIE7nQKAdYhr4mPHEzA1sSD2LDPklnOTGIDCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:53:38.955869Z"},"content_sha256":"48ea52b86e16874816681697bb81f5503909e2be21e8a1b093488b2925ddcb99","schema_version":"1.0","event_id":"sha256:48ea52b86e16874816681697bb81f5503909e2be21e8a1b093488b2925ddcb99"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KUYUDCR3X5Z77PIUUDMGBI2FAR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"AIFNet: Automatic Vascular Function Estimation for Perfusion Analysis Using Deep Learning","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Bjoern Menze, David Robben, Diana M. Sima, Ezequiel de la Rosa, Jan S. Kirschke","submitted_at":"2020-10-04T16:14:45Z","abstract_excerpt":"Perfusion imaging is crucial in acute ischemic stroke for quantifying the salvageable penumbra and irreversibly damaged core lesions. As such, it helps clinicians to decide on the optimal reperfusion treatment. In perfusion CT imaging, deconvolution methods are used to obtain clinically interpretable perfusion parameters that allow identifying brain tissue abnormalities. Deconvolution methods require the selection of two reference vascular functions as inputs to the model: the arterial input function (AIF) and the venous output function, with the AIF as the most critical model input. When manu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.01617","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/2010.01617/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":"2026-07-05T04:17:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZZA67nCuxezXGwF69/2YDbWnE8/Nq/g/37v084d/GQTILp5n06rgYQbPySJZQLHGgDXNtPd/MZjX3zO5qxfnBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:53:38.956252Z"},"content_sha256":"9891262368ac3f94e3722af25078216f90f5c0ab6376c058f37cb1327df07f6e","schema_version":"1.0","event_id":"sha256:9891262368ac3f94e3722af25078216f90f5c0ab6376c058f37cb1327df07f6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KUYUDCR3X5Z77PIUUDMGBI2FAR/bundle.json","state_url":"https://pith.science/pith/KUYUDCR3X5Z77PIUUDMGBI2FAR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KUYUDCR3X5Z77PIUUDMGBI2FAR/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":"2026-07-07T15:53:38Z","links":{"resolver":"https://pith.science/pith/KUYUDCR3X5Z77PIUUDMGBI2FAR","bundle":"https://pith.science/pith/KUYUDCR3X5Z77PIUUDMGBI2FAR/bundle.json","state":"https://pith.science/pith/KUYUDCR3X5Z77PIUUDMGBI2FAR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KUYUDCR3X5Z77PIUUDMGBI2FAR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KUYUDCR3X5Z77PIUUDMGBI2FAR","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":"ec97e6cfab72c684c5ac282cca13b6a30f6c1586f3f541676030ba3974d9ca66","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-10-04T16:14:45Z","title_canon_sha256":"19c1c00dd2eee1ce5d079cecdc5f25adf5db1357d62ac4ee95a25b1a8aad4637"},"schema_version":"1.0","source":{"id":"2010.01617","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.01617","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"arxiv_version","alias_value":"2010.01617v1","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.01617","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"pith_short_12","alias_value":"KUYUDCR3X5Z7","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"pith_short_16","alias_value":"KUYUDCR3X5Z77PIU","created_at":"2026-07-05T04:17:34Z"},{"alias_kind":"pith_short_8","alias_value":"KUYUDCR3","created_at":"2026-07-05T04:17:34Z"}],"graph_snapshots":[{"event_id":"sha256:9891262368ac3f94e3722af25078216f90f5c0ab6376c058f37cb1327df07f6e","target":"graph","created_at":"2026-07-05T04:17:34Z","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/2010.01617/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Perfusion imaging is crucial in acute ischemic stroke for quantifying the salvageable penumbra and irreversibly damaged core lesions. As such, it helps clinicians to decide on the optimal reperfusion treatment. In perfusion CT imaging, deconvolution methods are used to obtain clinically interpretable perfusion parameters that allow identifying brain tissue abnormalities. Deconvolution methods require the selection of two reference vascular functions as inputs to the model: the arterial input function (AIF) and the venous output function, with the AIF as the most critical model input. When manu","authors_text":"Bjoern Menze, David Robben, Diana M. Sima, Ezequiel de la Rosa, Jan S. Kirschke","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-10-04T16:14:45Z","title":"AIFNet: Automatic Vascular Function Estimation for Perfusion Analysis Using Deep Learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.01617","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":"sha256:48ea52b86e16874816681697bb81f5503909e2be21e8a1b093488b2925ddcb99","target":"record","created_at":"2026-07-05T04:17:34Z","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":"ec97e6cfab72c684c5ac282cca13b6a30f6c1586f3f541676030ba3974d9ca66","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-10-04T16:14:45Z","title_canon_sha256":"19c1c00dd2eee1ce5d079cecdc5f25adf5db1357d62ac4ee95a25b1a8aad4637"},"schema_version":"1.0","source":{"id":"2010.01617","kind":"arxiv","version":1}},"canonical_sha256":"5531418a3bbf73ffbd14a0d860a3450477661973d95273599865a232a4111abc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5531418a3bbf73ffbd14a0d860a3450477661973d95273599865a232a4111abc","first_computed_at":"2026-07-05T04:17:34.083440Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:17:34.083440Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uNY9o11ioIWGNFQRsbkL1cO4TTNjfHSNyHC8ozC/8o8NH1fCV2Hp8HalOYMVv005QZpqt4rPNWs9Hif+aKC1DA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:17:34.084154Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.01617","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48ea52b86e16874816681697bb81f5503909e2be21e8a1b093488b2925ddcb99","sha256:9891262368ac3f94e3722af25078216f90f5c0ab6376c058f37cb1327df07f6e"],"state_sha256":"8ec999f5b4e4290f5f205c6cb56b2d2015e4921ddca07f7d377d9dc4688ab96f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"efEhMQtqdEdYmxADsGYzJDMGALtl7haP5ymT+7VzkhuFjX7MGMWbHfvf7wIalmz3+TwAeJ/wYhJxSK1ADYUqAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T15:53:38.958289Z","bundle_sha256":"5978f35d03354352a68f5d5db15591bb5fd7bd353768a84cd678cb54ec04c552"}}