{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:7K3CYB2ERZU3X4DLLRDVF3XLJK","short_pith_number":"pith:7K3CYB2E","schema_version":"1.0","canonical_sha256":"fab62c07448e69bbf06b5c4752eeeb4a9affc41f1e58ec22705ee0719238e418","source":{"kind":"arxiv","id":"2412.15018","version":2},"attestation_state":"computed","paper":{"title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Ahmadreza Rezaei, Fernando Boada, Frederic Jolivet, Georg Schramm, Johan Nuyts, Klaus Sch\\\"afers, Masoud Elhamiasl, Michael Fieseler","submitted_at":"2024-12-19T16:30:56Z","abstract_excerpt":"Whole-body PET imaging is often hindered by respiratory motion during acquisition, causing significant degradation in the quality of reconstructed activity images. An additional challenge in PET/CT imaging arises from the respiratory phase mismatch between CT-based attenuation correction and PET acquisition, leading to attenuation artifacts. To address these issues, we propose two new, purely data-driven methods for the joint estimation of activity, attenuation, and motion in respiratory self-gated TOF PET. These methods enable the reconstruction of a single activity image free from motion and"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2412.15018","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-12-19T16:30:56Z","cross_cats_sorted":[],"title_canon_sha256":"f49872ea7e21a5b900e1726968e9f7da96e386e5d28336f39f78e01857bc29e1","abstract_canon_sha256":"09d92f914241f2a414e9cdb10b8f7cd423ff3e5f444d85b4edd901cab12db642"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:32:35.891173Z","signature_b64":"ulwnDQsyMtaggAvKbQj1BeV41uPT4u/c3RgGV3WIVHXfoYTDcZd6lnjPquEq0PPFA2H8dhaX56O8c7/UPDbVAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fab62c07448e69bbf06b5c4752eeeb4a9affc41f1e58ec22705ee0719238e418","last_reissued_at":"2026-07-05T10:32:35.890669Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:32:35.890669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Ahmadreza Rezaei, Fernando Boada, Frederic Jolivet, Georg Schramm, Johan Nuyts, Klaus Sch\\\"afers, Masoud Elhamiasl, Michael Fieseler","submitted_at":"2024-12-19T16:30:56Z","abstract_excerpt":"Whole-body PET imaging is often hindered by respiratory motion during acquisition, causing significant degradation in the quality of reconstructed activity images. An additional challenge in PET/CT imaging arises from the respiratory phase mismatch between CT-based attenuation correction and PET acquisition, leading to attenuation artifacts. To address these issues, we propose two new, purely data-driven methods for the joint estimation of activity, attenuation, and motion in respiratory self-gated TOF PET. These methods enable the reconstruction of a single activity image free from motion and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.15018","kind":"arxiv","version":2},"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/2412.15018/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2412.15018","created_at":"2026-07-05T10:32:35.890730+00:00"},{"alias_kind":"arxiv_version","alias_value":"2412.15018v2","created_at":"2026-07-05T10:32:35.890730+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.15018","created_at":"2026-07-05T10:32:35.890730+00:00"},{"alias_kind":"pith_short_12","alias_value":"7K3CYB2ERZU3","created_at":"2026-07-05T10:32:35.890730+00:00"},{"alias_kind":"pith_short_16","alias_value":"7K3CYB2ERZU3X4DL","created_at":"2026-07-05T10:32:35.890730+00:00"},{"alias_kind":"pith_short_8","alias_value":"7K3CYB2E","created_at":"2026-07-05T10:32:35.890730+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK","json":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK.json","graph_json":"https://pith.science/api/pith-number/7K3CYB2ERZU3X4DLLRDVF3XLJK/graph.json","events_json":"https://pith.science/api/pith-number/7K3CYB2ERZU3X4DLLRDVF3XLJK/events.json","paper":"https://pith.science/paper/7K3CYB2E"},"agent_actions":{"view_html":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK","download_json":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK.json","view_paper":"https://pith.science/paper/7K3CYB2E","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2412.15018&json=true","fetch_graph":"https://pith.science/api/pith-number/7K3CYB2ERZU3X4DLLRDVF3XLJK/graph.json","fetch_events":"https://pith.science/api/pith-number/7K3CYB2ERZU3X4DLLRDVF3XLJK/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK/action/storage_attestation","attest_author":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK/action/author_attestation","sign_citation":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK/action/citation_signature","submit_replication":"https://pith.science/pith/7K3CYB2ERZU3X4DLLRDVF3XLJK/action/replication_record"}},"created_at":"2026-07-05T10:32:35.890730+00:00","updated_at":"2026-07-05T10:32:35.890730+00:00"}