{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:F2PQKR3WURL2OJLQOZUCIPENCA","short_pith_number":"pith:F2PQKR3W","canonical_record":{"source":{"id":"1905.11387","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-26T23:25:59Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"b7c2ed404601be27ad663096e1b24245f11ca32225d7f25ebd3ad5b1b95e183c","abstract_canon_sha256":"c4ddac458f63a03cc599032f32ca1dff58ada17bca0e473bcad3eb6dec1699e3"},"schema_version":"1.0"},"canonical_sha256":"2e9f054776a457a725707668243c8d10006e3803a3691ca94f3ffb3a5680ab5b","source":{"kind":"arxiv","id":"1905.11387","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.11387","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"arxiv_version","alias_value":"1905.11387v1","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.11387","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"pith_short_12","alias_value":"F2PQKR3WURL2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"F2PQKR3WURL2OJLQ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"F2PQKR3W","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:F2PQKR3WURL2OJLQOZUCIPENCA","target":"record","payload":{"canonical_record":{"source":{"id":"1905.11387","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-26T23:25:59Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"b7c2ed404601be27ad663096e1b24245f11ca32225d7f25ebd3ad5b1b95e183c","abstract_canon_sha256":"c4ddac458f63a03cc599032f32ca1dff58ada17bca0e473bcad3eb6dec1699e3"},"schema_version":"1.0"},"canonical_sha256":"2e9f054776a457a725707668243c8d10006e3803a3691ca94f3ffb3a5680ab5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:53.500369Z","signature_b64":"XbXrYph2NplL+ee7T+kpBIVEl2CaD72CvhFOnwj1ycz+RUfla8s/zTbvvQfDuQtuNqGVConDKCwLVfQtQin+BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e9f054776a457a725707668243c8d10006e3803a3691ca94f3ffb3a5680ab5b","last_reissued_at":"2026-05-17T23:44:53.499748Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:53.499748Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.11387","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":"2026-05-17T23:44:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g66d4EyR/1OQ5OsblaaUrTqs3zAR3TfN1CblmvjEaywNdJyDFnlVG5tCRM9UEW9jGYxzQUpSlb1A8Oc092QNAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:38:48.585582Z"},"content_sha256":"26161607eac28c2e8585b1b0bf18f6ca6f08aadb30516c8df84b2dd51e98112b","schema_version":"1.0","event_id":"sha256:26161607eac28c2e8585b1b0bf18f6ca6f08aadb30516c8df84b2dd51e98112b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:F2PQKR3WURL2OJLQOZUCIPENCA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automatic Delineation of Kidney Region in DCE-MRI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"David Windridge, Isky Gorden, Kevin Wells, Miroslaw Bober, Norman Poh, Santosh Tirunagari","submitted_at":"2019-05-26T23:25:59Z","abstract_excerpt":"Delineation of the kidney region in dynamic contrast-enhanced magnetic resonance Imaging (DCE-MRI) is required during post-acquisition analysis in order to quantify various aspects of renal function, such as filtration and perfusion or blood flow. However, this can be obfuscated by the Partial Volume Effect (PVE), caused due to the mixing of any single voxel with two or more signal intensities from adjacent regions such as liver region and other tissues. To avoid this problem, firstly, a kidney region of interest (ROI) needs to be defined for the analysis. A clinician may choose to select a re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.11387","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":""},"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":"2026-05-17T23:44:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k0Han+UdaE1dPUCqClqNyTYVuVQrauOYxx8cbMg+W34ntCph5TANom0vWqSCyWtW0DdjsYxtsRjf9FMj6MjsAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:38:48.585966Z"},"content_sha256":"138cb2e0710bbc67aabafe384066b9107b954c9b58d1d74030b42e1c634455c1","schema_version":"1.0","event_id":"sha256:138cb2e0710bbc67aabafe384066b9107b954c9b58d1d74030b42e1c634455c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F2PQKR3WURL2OJLQOZUCIPENCA/bundle.json","state_url":"https://pith.science/pith/F2PQKR3WURL2OJLQOZUCIPENCA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F2PQKR3WURL2OJLQOZUCIPENCA/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":"2026-05-25T07:38:48Z","links":{"resolver":"https://pith.science/pith/F2PQKR3WURL2OJLQOZUCIPENCA","bundle":"https://pith.science/pith/F2PQKR3WURL2OJLQOZUCIPENCA/bundle.json","state":"https://pith.science/pith/F2PQKR3WURL2OJLQOZUCIPENCA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F2PQKR3WURL2OJLQOZUCIPENCA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:F2PQKR3WURL2OJLQOZUCIPENCA","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":"c4ddac458f63a03cc599032f32ca1dff58ada17bca0e473bcad3eb6dec1699e3","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-26T23:25:59Z","title_canon_sha256":"b7c2ed404601be27ad663096e1b24245f11ca32225d7f25ebd3ad5b1b95e183c"},"schema_version":"1.0","source":{"id":"1905.11387","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.11387","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"arxiv_version","alias_value":"1905.11387v1","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.11387","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"pith_short_12","alias_value":"F2PQKR3WURL2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"F2PQKR3WURL2OJLQ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"F2PQKR3W","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:138cb2e0710bbc67aabafe384066b9107b954c9b58d1d74030b42e1c634455c1","target":"graph","created_at":"2026-05-17T23:44:53Z","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"},"paper":{"abstract_excerpt":"Delineation of the kidney region in dynamic contrast-enhanced magnetic resonance Imaging (DCE-MRI) is required during post-acquisition analysis in order to quantify various aspects of renal function, such as filtration and perfusion or blood flow. However, this can be obfuscated by the Partial Volume Effect (PVE), caused due to the mixing of any single voxel with two or more signal intensities from adjacent regions such as liver region and other tissues. To avoid this problem, firstly, a kidney region of interest (ROI) needs to be defined for the analysis. A clinician may choose to select a re","authors_text":"David Windridge, Isky Gorden, Kevin Wells, Miroslaw Bober, Norman Poh, Santosh Tirunagari","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-26T23:25:59Z","title":"Automatic Delineation of Kidney Region in DCE-MRI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.11387","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":"sha256:26161607eac28c2e8585b1b0bf18f6ca6f08aadb30516c8df84b2dd51e98112b","target":"record","created_at":"2026-05-17T23:44:53Z","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":"c4ddac458f63a03cc599032f32ca1dff58ada17bca0e473bcad3eb6dec1699e3","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-26T23:25:59Z","title_canon_sha256":"b7c2ed404601be27ad663096e1b24245f11ca32225d7f25ebd3ad5b1b95e183c"},"schema_version":"1.0","source":{"id":"1905.11387","kind":"arxiv","version":1}},"canonical_sha256":"2e9f054776a457a725707668243c8d10006e3803a3691ca94f3ffb3a5680ab5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e9f054776a457a725707668243c8d10006e3803a3691ca94f3ffb3a5680ab5b","first_computed_at":"2026-05-17T23:44:53.499748Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:53.499748Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XbXrYph2NplL+ee7T+kpBIVEl2CaD72CvhFOnwj1ycz+RUfla8s/zTbvvQfDuQtuNqGVConDKCwLVfQtQin+BA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:53.500369Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.11387","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26161607eac28c2e8585b1b0bf18f6ca6f08aadb30516c8df84b2dd51e98112b","sha256:138cb2e0710bbc67aabafe384066b9107b954c9b58d1d74030b42e1c634455c1"],"state_sha256":"05802b2f8e295260d5d4b9f3478bd1904646e3ace9d795f189aa605fb76d9dcb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wyY0w2kTWKehgP4zphjPrRWhufXIJoMi6IsGQygIE075XYuMot8P33HdXvuPkihbJyvifbw0ZyDWHBkxqBPZCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T07:38:48.589156Z","bundle_sha256":"06bf2d1ce722c1c7055f23d16dd40c5ea505283d06002e30f5e9b96087fc6aee"}}