{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:PP5FDUCFPADIVOOTWHAS7EPAVQ","short_pith_number":"pith:PP5FDUCF","canonical_record":{"source":{"id":"2009.05901","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-09-13T02:51:25Z","cross_cats_sorted":["cs.LG","eess.IV"],"title_canon_sha256":"73a4ad03a86b251a9bd77df34a39e5de634f5e2ea06060b39957d220049d4d2b","abstract_canon_sha256":"33996689776eb6ef4ddf4d79e9ceb6637b7657d45732360668a2ebc2158ddb1f"},"schema_version":"1.0"},"canonical_sha256":"7bfa51d04578068ab9d3b1c12f91e0ac3945fdf231da828cc3783118817fb6ae","source":{"kind":"arxiv","id":"2009.05901","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.05901","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"arxiv_version","alias_value":"2009.05901v1","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.05901","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"pith_short_12","alias_value":"PP5FDUCFPADI","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"pith_short_16","alias_value":"PP5FDUCFPADIVOOT","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"pith_short_8","alias_value":"PP5FDUCF","created_at":"2026-07-05T01:35:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:PP5FDUCFPADIVOOTWHAS7EPAVQ","target":"record","payload":{"canonical_record":{"source":{"id":"2009.05901","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-09-13T02:51:25Z","cross_cats_sorted":["cs.LG","eess.IV"],"title_canon_sha256":"73a4ad03a86b251a9bd77df34a39e5de634f5e2ea06060b39957d220049d4d2b","abstract_canon_sha256":"33996689776eb6ef4ddf4d79e9ceb6637b7657d45732360668a2ebc2158ddb1f"},"schema_version":"1.0"},"canonical_sha256":"7bfa51d04578068ab9d3b1c12f91e0ac3945fdf231da828cc3783118817fb6ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:35:02.337614Z","signature_b64":"HIgU3k2BT1YrRzihYwcRbmwW3fkc7Ja/OYc4JtwZRXCOER/zlE1gUa1pQ/oVf2HSZxQNpp5v/pafMjgWgI0CDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7bfa51d04578068ab9d3b1c12f91e0ac3945fdf231da828cc3783118817fb6ae","last_reissued_at":"2026-07-05T01:35:02.337000Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:35:02.337000Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.05901","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":"2026-07-05T01:35:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QDxl+u87k0rANB8sL9OO/WQSfobG0bICryWq63mfgTfncZBj3v82qr2VXZ6hI0PEU5fnjgbRwLp9cbaoTOgECg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:54:42.850241Z"},"content_sha256":"bbecece32143bd2d9c835d442e80e0248634213d4f4db579f70d074529418034","schema_version":"1.0","event_id":"sha256:bbecece32143bd2d9c835d442e80e0248634213d4f4db579f70d074529418034"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:PP5FDUCFPADIVOOTWHAS7EPAVQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Clinically Translatable Direct Patlak Reconstruction from Dynamic PET with Motion Correction Using Convolutional Neural Network","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","eess.IV"],"primary_cat":"physics.med-ph","authors_text":"Huafeng Liu, Jianan Cui, Kuang Gong, Ning Guo, Nuobei Xie, Quanzheng Li, Zhifang Wu, Zhixing Qin","submitted_at":"2020-09-13T02:51:25Z","abstract_excerpt":"Patlak model is widely used in 18F-FDG dynamic positron emission tomography (PET) imaging, where the estimated parametric images reveal important biochemical and physiology information. Because of better noise modeling and more information extracted from raw sinogram, direct Patlak reconstruction gains its popularity over the indirect approach which utilizes reconstructed dynamic PET images alone. As the prerequisite of direct Patlak methods, raw data from dynamic PET are rarely stored in clinics and difficult to obtain. In addition, the direct reconstruction is time-consuming due to the bottl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.05901","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/2009.05901/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":"2026-07-05T01:35:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RDnTnBej8JCiM0FNmTbhW3BRpXXuTta+nRtfgP5raM8I+6ZM40wBGhpT7ABYMM+IqUzAPkjTKFoOJ3Dw0KJ1Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:54:42.850872Z"},"content_sha256":"b5e4dfd0308e2184195b6e03d97db9f4ba55cf9b76f447975a26098f116ec948","schema_version":"1.0","event_id":"sha256:b5e4dfd0308e2184195b6e03d97db9f4ba55cf9b76f447975a26098f116ec948"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PP5FDUCFPADIVOOTWHAS7EPAVQ/bundle.json","state_url":"https://pith.science/pith/PP5FDUCFPADIVOOTWHAS7EPAVQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PP5FDUCFPADIVOOTWHAS7EPAVQ/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":"2026-08-03T20:54:42Z","links":{"resolver":"https://pith.science/pith/PP5FDUCFPADIVOOTWHAS7EPAVQ","bundle":"https://pith.science/pith/PP5FDUCFPADIVOOTWHAS7EPAVQ/bundle.json","state":"https://pith.science/pith/PP5FDUCFPADIVOOTWHAS7EPAVQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PP5FDUCFPADIVOOTWHAS7EPAVQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:PP5FDUCFPADIVOOTWHAS7EPAVQ","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":"33996689776eb6ef4ddf4d79e9ceb6637b7657d45732360668a2ebc2158ddb1f","cross_cats_sorted":["cs.LG","eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-09-13T02:51:25Z","title_canon_sha256":"73a4ad03a86b251a9bd77df34a39e5de634f5e2ea06060b39957d220049d4d2b"},"schema_version":"1.0","source":{"id":"2009.05901","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.05901","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"arxiv_version","alias_value":"2009.05901v1","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.05901","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"pith_short_12","alias_value":"PP5FDUCFPADI","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"pith_short_16","alias_value":"PP5FDUCFPADIVOOT","created_at":"2026-07-05T01:35:02Z"},{"alias_kind":"pith_short_8","alias_value":"PP5FDUCF","created_at":"2026-07-05T01:35:02Z"}],"graph_snapshots":[{"event_id":"sha256:b5e4dfd0308e2184195b6e03d97db9f4ba55cf9b76f447975a26098f116ec948","target":"graph","created_at":"2026-07-05T01:35:02Z","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/2009.05901/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Patlak model is widely used in 18F-FDG dynamic positron emission tomography (PET) imaging, where the estimated parametric images reveal important biochemical and physiology information. Because of better noise modeling and more information extracted from raw sinogram, direct Patlak reconstruction gains its popularity over the indirect approach which utilizes reconstructed dynamic PET images alone. As the prerequisite of direct Patlak methods, raw data from dynamic PET are rarely stored in clinics and difficult to obtain. In addition, the direct reconstruction is time-consuming due to the bottl","authors_text":"Huafeng Liu, Jianan Cui, Kuang Gong, Ning Guo, Nuobei Xie, Quanzheng Li, Zhifang Wu, Zhixing Qin","cross_cats":["cs.LG","eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-09-13T02:51:25Z","title":"Clinically Translatable Direct Patlak Reconstruction from Dynamic PET with Motion Correction Using Convolutional Neural Network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.05901","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:bbecece32143bd2d9c835d442e80e0248634213d4f4db579f70d074529418034","target":"record","created_at":"2026-07-05T01:35:02Z","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":"33996689776eb6ef4ddf4d79e9ceb6637b7657d45732360668a2ebc2158ddb1f","cross_cats_sorted":["cs.LG","eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-09-13T02:51:25Z","title_canon_sha256":"73a4ad03a86b251a9bd77df34a39e5de634f5e2ea06060b39957d220049d4d2b"},"schema_version":"1.0","source":{"id":"2009.05901","kind":"arxiv","version":1}},"canonical_sha256":"7bfa51d04578068ab9d3b1c12f91e0ac3945fdf231da828cc3783118817fb6ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7bfa51d04578068ab9d3b1c12f91e0ac3945fdf231da828cc3783118817fb6ae","first_computed_at":"2026-07-05T01:35:02.337000Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:35:02.337000Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HIgU3k2BT1YrRzihYwcRbmwW3fkc7Ja/OYc4JtwZRXCOER/zlE1gUa1pQ/oVf2HSZxQNpp5v/pafMjgWgI0CDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:35:02.337614Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.05901","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bbecece32143bd2d9c835d442e80e0248634213d4f4db579f70d074529418034","sha256:b5e4dfd0308e2184195b6e03d97db9f4ba55cf9b76f447975a26098f116ec948"],"state_sha256":"02aa9e834236fd8f2a8f956f1f8e891856a0889d45c35733d49da7ddce7001ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p8snfUWRlQy3j7sHVD43XG2LFyf+/SzvvAVhntIFEeNMBTc7ZZ2gzYokOOo0wmzvWQ39zF23z2AtYMqI502RDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T20:54:42.856342Z","bundle_sha256":"86f0679d098a4f60a7fd2912f2537e7cc669d850d3755011d941b35e428f0732"}}