{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:LPPG3WFJDQY7IWLIU6UT7ZDCWT","short_pith_number":"pith:LPPG3WFJ","schema_version":"1.0","canonical_sha256":"5bde6dd8a91c31f45968a7a93fe462b4e7cebf45bb7529d8613679990e8a642a","source":{"kind":"arxiv","id":"2607.29478","version":1},"attestation_state":"computed","paper":{"title":"Universal Phase Contrast in Micro-CT Systems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph","physics.ins-det"],"primary_cat":"physics.optics","authors_text":"Alberto Astolfo, Alessandro Olivo, Charlotte K. Hagen, David Bate, Grammatiki Lioliou, Marco Endrizzi","submitted_at":"2026-07-31T14:41:51Z","abstract_excerpt":"Conventional high-resolution micro-CT systems are regarded as attenuation-based unless visible Fresnel fringes reveal the presence of propagation-based phase contrast. Here we show that this interpretation is incomplete. When propagation-induced phase transfer is non-negligible relative to the system blur, micro-CT operates in a phase-transfer regime in which propagation improves spatial resolution relative to that expected from source and detector blur alone, irrespective of whether Fresnel fringes remain visible. Because micro-CT systems possess finite source and detector blur, this phase tr"},"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":"2607.29478","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-07-31T14:41:51Z","cross_cats_sorted":["physics.app-ph","physics.ins-det"],"title_canon_sha256":"29aa232eb61ba6dc13569a162c6bfce28a07535f1679ede3978ee940b7ab3ba6","abstract_canon_sha256":"0ad597406548a08df9b4bac99ebb178cb35ec433f71be980d6a0b99d88bb6793"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-03T01:35:29.272178Z","signature_b64":"qZRjGlM50RbzuenUnIQgNDWoNgzTHW6nUkQb4Q3A2I6pA0e9jxEVJMnqMqrG2ABM04s68SR9AImfHQyVcbj+Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5bde6dd8a91c31f45968a7a93fe462b4e7cebf45bb7529d8613679990e8a642a","last_reissued_at":"2026-08-03T01:35:29.270224Z","signature_status":"signed_v1","first_computed_at":"2026-08-03T01:35:29.270224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Universal Phase Contrast in Micro-CT Systems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph","physics.ins-det"],"primary_cat":"physics.optics","authors_text":"Alberto Astolfo, Alessandro Olivo, Charlotte K. Hagen, David Bate, Grammatiki Lioliou, Marco Endrizzi","submitted_at":"2026-07-31T14:41:51Z","abstract_excerpt":"Conventional high-resolution micro-CT systems are regarded as attenuation-based unless visible Fresnel fringes reveal the presence of propagation-based phase contrast. Here we show that this interpretation is incomplete. When propagation-induced phase transfer is non-negligible relative to the system blur, micro-CT operates in a phase-transfer regime in which propagation improves spatial resolution relative to that expected from source and detector blur alone, irrespective of whether Fresnel fringes remain visible. Because micro-CT systems possess finite source and detector blur, this phase tr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.29478","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/2607.29478/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":"2607.29478","created_at":"2026-08-03T01:35:29.271373+00:00"},{"alias_kind":"arxiv_version","alias_value":"2607.29478v1","created_at":"2026-08-03T01:35:29.271373+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.29478","created_at":"2026-08-03T01:35:29.271373+00:00"},{"alias_kind":"pith_short_12","alias_value":"LPPG3WFJDQY7","created_at":"2026-08-03T01:35:29.271373+00:00"},{"alias_kind":"pith_short_16","alias_value":"LPPG3WFJDQY7IWLI","created_at":"2026-08-03T01:35:29.271373+00:00"},{"alias_kind":"pith_short_8","alias_value":"LPPG3WFJ","created_at":"2026-08-03T01:35:29.271373+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/LPPG3WFJDQY7IWLIU6UT7ZDCWT","json":"https://pith.science/pith/LPPG3WFJDQY7IWLIU6UT7ZDCWT.json","graph_json":"https://pith.science/api/pith-number/LPPG3WFJDQY7IWLIU6UT7ZDCWT/graph.json","events_json":"https://pith.science/api/pith-number/LPPG3WFJDQY7IWLIU6UT7ZDCWT/events.json","paper":"https://pith.science/paper/LPPG3WFJ"},"agent_actions":{"view_html":"https://pith.science/pith/LPPG3WFJDQY7IWLIU6UT7ZDCWT","download_json":"https://pith.science/pith/LPPG3WFJDQY7IWLIU6UT7ZDCWT.json","view_paper":"https://pith.science/paper/LPPG3WFJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2607.29478&json=true","fetch_graph":"https://pith.science/api/pith-number/LPPG3WFJDQY7IWLIU6UT7ZDCWT/graph.json","fetch_events":"https://pith.science/api/pith-number/LPPG3WFJDQY7IWLIU6UT7ZDCWT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LPPG3WFJDQY7IWLIU6UT7ZDCWT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LPPG3WFJDQY7IWLIU6UT7ZDCWT/action/storage_attestation","attest_author":"https://pith.science/pith/LPPG3WFJDQY7IWLIU6UT7ZDCWT/action/author_attestation","sign_citation":"https://pith.science/pith/LPPG3WFJDQY7IWLIU6UT7ZDCWT/action/citation_signature","submit_replication":"https://pith.science/pith/LPPG3WFJDQY7IWLIU6UT7ZDCWT/action/replication_record"}},"created_at":"2026-08-03T01:35:29.271373+00:00","updated_at":"2026-08-03T01:35:29.271373+00:00"}