{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:7W5MMNR3QLZCVZO4KK5MY6UNEU","short_pith_number":"pith:7W5MMNR3","canonical_record":{"source":{"id":"2003.13440","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-03-30T13:05:07Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"1c9bd974d04c5587ea7b268fe3dfdedeb09dc4c099005cbaba0ab7caf61dde6a","abstract_canon_sha256":"941989b3bc70ab9f7f91fa55ef997ca5dab3c4390f8536ae11f8757737caa7b6"},"schema_version":"1.0"},"canonical_sha256":"fdbac6363b82f22ae5dc52bacc7a8d2519cdfcebb18e67a62a41d89c75556ea2","source":{"kind":"arxiv","id":"2003.13440","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.13440","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"arxiv_version","alias_value":"2003.13440v1","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.13440","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"pith_short_12","alias_value":"7W5MMNR3QLZC","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"pith_short_16","alias_value":"7W5MMNR3QLZCVZO4","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"pith_short_8","alias_value":"7W5MMNR3","created_at":"2026-07-05T00:51:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:7W5MMNR3QLZCVZO4KK5MY6UNEU","target":"record","payload":{"canonical_record":{"source":{"id":"2003.13440","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-03-30T13:05:07Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"1c9bd974d04c5587ea7b268fe3dfdedeb09dc4c099005cbaba0ab7caf61dde6a","abstract_canon_sha256":"941989b3bc70ab9f7f91fa55ef997ca5dab3c4390f8536ae11f8757737caa7b6"},"schema_version":"1.0"},"canonical_sha256":"fdbac6363b82f22ae5dc52bacc7a8d2519cdfcebb18e67a62a41d89c75556ea2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:51:23.277750Z","signature_b64":"EbX1gl1/S1ZPGLmUxt0nZawsaOEk+l1VKjCkcKHfmueQQvagPa7uUTAtiYOTDexUpajOUOVrColfOl0+w0TjAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fdbac6363b82f22ae5dc52bacc7a8d2519cdfcebb18e67a62a41d89c75556ea2","last_reissued_at":"2026-07-05T00:51:23.277293Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:51:23.277293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.13440","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":"2026-07-05T00:51:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uJrqS4fdxymkA7sDF0pTgdmBTN8Ali+VoedemkIjpy/PEOY3Wghv3R0aB7dhWLeOxqZpqFsRZvrpm6zL5ygnCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:24:32.599050Z"},"content_sha256":"de5d73f0029dba5c323e0177cb5cd3b4725658fc858354e6803a01650c7ee9af","schema_version":"1.0","event_id":"sha256:de5d73f0029dba5c323e0177cb5cd3b4725658fc858354e6803a01650c7ee9af"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:7W5MMNR3QLZCVZO4KK5MY6UNEU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Computer Aided Detection for Pulmonary Embolism Challenge (CAD-PE)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Ara Kassarjian, Carlos Cano-Espinosa, Daniel Jimenez-Carretero, Eduardo Fraile, Frank J. Rybicki, Germ\\'an Gonz\\'alez, Hamid-Reza Pourreza, Jianming Liang, Mahdi Saadatmand, Maria J. Ledesma-Carbayo, Michael B. Gotway, Miguel Cazorla, Mojtaba Masoudi, Nima Tajbakhsh, Noushin Eftekhari, Patricia Fraga-Rivas, Ra\\'ul San Jos\\'e Est\\'epar, Sara Rodr\\'iguez-L\\'opez, Tanya Agarwal, Vinit Agarwal","submitted_at":"2020-03-30T13:05:07Z","abstract_excerpt":"Rationale: Computer aided detection (CAD) algorithms for Pulmonary Embolism (PE) algorithms have been shown to increase radiologists' sensitivity with a small increase in specificity. However, CAD for PE has not been adopted into clinical practice, likely because of the high number of false positives current CAD software produces. Objective: To generate a database of annotated computed tomography pulmonary angiographies, use it to compare the sensitivity and false positive rate of current algorithms and to develop new methods that improve such metrics. Methods: 91 Computed tomography pulmonary"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.13440","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/2003.13440/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":"2026-07-05T00:51:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ai5b5cmv/hZB5TsYVNFBBe3ulB52o/TMvHqXzfqsNaJUk9GW42cmq9UFkxarrdR3jNz/60gZwB1omHUxqPEkCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:24:32.599442Z"},"content_sha256":"0ab24248765a5b5d72e5bb82ad3ca723d1c9c4392bf2aca3a6c2ef110800d106","schema_version":"1.0","event_id":"sha256:0ab24248765a5b5d72e5bb82ad3ca723d1c9c4392bf2aca3a6c2ef110800d106"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7W5MMNR3QLZCVZO4KK5MY6UNEU/bundle.json","state_url":"https://pith.science/pith/7W5MMNR3QLZCVZO4KK5MY6UNEU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7W5MMNR3QLZCVZO4KK5MY6UNEU/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":"2026-07-06T20:24:32Z","links":{"resolver":"https://pith.science/pith/7W5MMNR3QLZCVZO4KK5MY6UNEU","bundle":"https://pith.science/pith/7W5MMNR3QLZCVZO4KK5MY6UNEU/bundle.json","state":"https://pith.science/pith/7W5MMNR3QLZCVZO4KK5MY6UNEU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7W5MMNR3QLZCVZO4KK5MY6UNEU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:7W5MMNR3QLZCVZO4KK5MY6UNEU","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":"941989b3bc70ab9f7f91fa55ef997ca5dab3c4390f8536ae11f8757737caa7b6","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-03-30T13:05:07Z","title_canon_sha256":"1c9bd974d04c5587ea7b268fe3dfdedeb09dc4c099005cbaba0ab7caf61dde6a"},"schema_version":"1.0","source":{"id":"2003.13440","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.13440","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"arxiv_version","alias_value":"2003.13440v1","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.13440","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"pith_short_12","alias_value":"7W5MMNR3QLZC","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"pith_short_16","alias_value":"7W5MMNR3QLZCVZO4","created_at":"2026-07-05T00:51:23Z"},{"alias_kind":"pith_short_8","alias_value":"7W5MMNR3","created_at":"2026-07-05T00:51:23Z"}],"graph_snapshots":[{"event_id":"sha256:0ab24248765a5b5d72e5bb82ad3ca723d1c9c4392bf2aca3a6c2ef110800d106","target":"graph","created_at":"2026-07-05T00:51:23Z","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/2003.13440/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Rationale: Computer aided detection (CAD) algorithms for Pulmonary Embolism (PE) algorithms have been shown to increase radiologists' sensitivity with a small increase in specificity. However, CAD for PE has not been adopted into clinical practice, likely because of the high number of false positives current CAD software produces. Objective: To generate a database of annotated computed tomography pulmonary angiographies, use it to compare the sensitivity and false positive rate of current algorithms and to develop new methods that improve such metrics. Methods: 91 Computed tomography pulmonary","authors_text":"Ara Kassarjian, Carlos Cano-Espinosa, Daniel Jimenez-Carretero, Eduardo Fraile, Frank J. Rybicki, Germ\\'an Gonz\\'alez, Hamid-Reza Pourreza, Jianming Liang, Mahdi Saadatmand, Maria J. Ledesma-Carbayo, Michael B. Gotway, Miguel Cazorla, Mojtaba Masoudi, Nima Tajbakhsh, Noushin Eftekhari, Patricia Fraga-Rivas, Ra\\'ul San Jos\\'e Est\\'epar, Sara Rodr\\'iguez-L\\'opez, Tanya Agarwal, Vinit Agarwal","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-03-30T13:05:07Z","title":"Computer Aided Detection for Pulmonary Embolism Challenge (CAD-PE)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.13440","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:de5d73f0029dba5c323e0177cb5cd3b4725658fc858354e6803a01650c7ee9af","target":"record","created_at":"2026-07-05T00:51:23Z","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":"941989b3bc70ab9f7f91fa55ef997ca5dab3c4390f8536ae11f8757737caa7b6","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-03-30T13:05:07Z","title_canon_sha256":"1c9bd974d04c5587ea7b268fe3dfdedeb09dc4c099005cbaba0ab7caf61dde6a"},"schema_version":"1.0","source":{"id":"2003.13440","kind":"arxiv","version":1}},"canonical_sha256":"fdbac6363b82f22ae5dc52bacc7a8d2519cdfcebb18e67a62a41d89c75556ea2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fdbac6363b82f22ae5dc52bacc7a8d2519cdfcebb18e67a62a41d89c75556ea2","first_computed_at":"2026-07-05T00:51:23.277293Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:51:23.277293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EbX1gl1/S1ZPGLmUxt0nZawsaOEk+l1VKjCkcKHfmueQQvagPa7uUTAtiYOTDexUpajOUOVrColfOl0+w0TjAw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:51:23.277750Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.13440","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de5d73f0029dba5c323e0177cb5cd3b4725658fc858354e6803a01650c7ee9af","sha256:0ab24248765a5b5d72e5bb82ad3ca723d1c9c4392bf2aca3a6c2ef110800d106"],"state_sha256":"7958ab03e0cd931fb576ac9326b9bce012adf6e6fd40d7bb69763d8ebe6242be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VabC3KET8wJ4A5Dmc6DN1fi9RFwoNWau960TfDY/GpVK4YZ+VuyCa6jytLWSO+xzUHFPPOSe9KvRYZQ1Zv8mDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T20:24:32.601575Z","bundle_sha256":"2d296a2510290a75c99dbcecc6e1e84cb728e978d736a54e2f7661666fa7eb57"}}