{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:EQPLPB2QEMJPVWZW6WSYTPPMI7","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":"0b8a5bb5a904d3b09b1b04f396fc739202e059c83656cc699f81d912a0048b10","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2025-05-10T02:07:47Z","title_canon_sha256":"831a1e61b751bc6a4088187e72e6849cef12bde2b30a4b4cb70ce303a623f813"},"schema_version":"1.0","source":{"id":"2505.06490","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.06490","created_at":"2026-07-05T11:01:10Z"},{"alias_kind":"arxiv_version","alias_value":"2505.06490v1","created_at":"2026-07-05T11:01:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.06490","created_at":"2026-07-05T11:01:10Z"},{"alias_kind":"pith_short_12","alias_value":"EQPLPB2QEMJP","created_at":"2026-07-05T11:01:10Z"},{"alias_kind":"pith_short_16","alias_value":"EQPLPB2QEMJPVWZW","created_at":"2026-07-05T11:01:10Z"},{"alias_kind":"pith_short_8","alias_value":"EQPLPB2Q","created_at":"2026-07-05T11:01:10Z"}],"graph_snapshots":[{"event_id":"sha256:dd7a4854e80affad1edf27ee9f4a240f547d4e702efc6dc084c424e3d121c8b0","target":"graph","created_at":"2026-07-05T11:01:10Z","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/2505.06490/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetic particle imaging (MPI) is an in vivo method to detect magnetic nanoparticles for cell tracking, vascular imaging, and molecular target imaging without ionizing radiation. Current magnetic particle imaging is accomplished by forming an field-free line (FFL) through a gradient selection field. By translating and rotating FFL under excitation and drive fields, the harmonic complex signal of a point source forms a Lorentzian-shape point spread function on the plane perpendicular to FFL. The Lorentzian PSF has a finite size and limited resolution due to the non-sharp Langevin function and ","authors_text":"Guang Jia, Hui Hui, Jia Luo, Jie Tian, Lixuan Zhao, Mingli Peng, Peng Gao, Shi Bai, Tanping Li, Tianshu Li, Weihua Li, Yiwen Li, Yongchen Gou, Zhongwei Bian","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2025-05-10T02:07:47Z","title":"Phase-based stimulated emission depletion (pSTED) magnetic particle imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.06490","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:c5283344c71fd19fdb371212e9f15a835d3a0719e985b894a51222fbfa464a9f","target":"record","created_at":"2026-07-05T11:01:10Z","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":"0b8a5bb5a904d3b09b1b04f396fc739202e059c83656cc699f81d912a0048b10","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2025-05-10T02:07:47Z","title_canon_sha256":"831a1e61b751bc6a4088187e72e6849cef12bde2b30a4b4cb70ce303a623f813"},"schema_version":"1.0","source":{"id":"2505.06490","kind":"arxiv","version":1}},"canonical_sha256":"241eb787502312fadb36f5a589bdec47dfad2c56892373b3fd47b7938c37914a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"241eb787502312fadb36f5a589bdec47dfad2c56892373b3fd47b7938c37914a","first_computed_at":"2026-07-05T11:01:10.420944Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:01:10.420944Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yeqUf03VJzztsXMMh9GAJm0ug/Q0bOiyjZGVVoshodeybRTBTwZqBFIJprFwzBFbC84LYSoihR+WCaVm/StIAw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:01:10.421455Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.06490","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c5283344c71fd19fdb371212e9f15a835d3a0719e985b894a51222fbfa464a9f","sha256:dd7a4854e80affad1edf27ee9f4a240f547d4e702efc6dc084c424e3d121c8b0"],"state_sha256":"452ccf89a1a4c67734ac6a525ef86f3f2f3008c8eba11411ef198e2e846582cc"}