{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:SNS5Y2HVPGIGTYWCMQ5D6Z55JC","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":"760c683749c64d018457ad555ecd78b040da0236308a3d1e9cba1a48e44494d2","cross_cats_sorted":["physics.bio-ph","q-bio.CB"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.med-ph","submitted_at":"2023-04-18T20:28:19Z","title_canon_sha256":"3d74ceb18ee03f1a7de899f73b20188a512f640d522ae7b41009d9d58997c74a"},"schema_version":"1.0","source":{"id":"2304.09275","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.09275","created_at":"2026-07-05T06:40:33Z"},{"alias_kind":"arxiv_version","alias_value":"2304.09275v2","created_at":"2026-07-05T06:40:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.09275","created_at":"2026-07-05T06:40:33Z"},{"alias_kind":"pith_short_12","alias_value":"SNS5Y2HVPGIG","created_at":"2026-07-05T06:40:33Z"},{"alias_kind":"pith_short_16","alias_value":"SNS5Y2HVPGIGTYWC","created_at":"2026-07-05T06:40:33Z"},{"alias_kind":"pith_short_8","alias_value":"SNS5Y2HV","created_at":"2026-07-05T06:40:33Z"}],"graph_snapshots":[{"event_id":"sha256:6e17fc6af303aec4b03ac522874b51401192f554302936327b8fc40a803fc82c","target":"graph","created_at":"2026-07-05T06:40:33Z","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/2304.09275/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Axon radius is a potential biomarker for brain diseases and a crucial tissue microstructure parameter that determines the speed of action potentials. Diffusion MRI (dMRI) allows non-invasive estimation of axon radius, but accurately estimating the radius of axons in the human brain is challenging. Most axons in the brain have a radius below one micrometer, which falls below the sensitivity limit of dMRI signals even when using the most advanced human MRI scanners. Therefore, new MRI methods that are sensitive to small axon radii are needed. In this proof-of-concept investigation, we examine wh","authors_text":"Chantal M.W. Tax, Cristina Granziera, Derek K. Jones, Erick J. Canales-Rodr\\'iguez, Jean-Philippe Thiran, Marco Pizzolato, Muhamed Barakovic, Stefano Magon, Tim B. Dyrby, Umesh Rudrapatna","cross_cats":["physics.bio-ph","q-bio.CB"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.med-ph","submitted_at":"2023-04-18T20:28:19Z","title":"Estimating axon radius using diffusion-relaxation MRI: calibrating a surface-based relaxation model with histology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.09275","kind":"arxiv","version":2},"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":"sha256:14f97dfe07f4a870f18aeba03856408691cac2a17bc3f240dfe5864a9e174836","target":"record","created_at":"2026-07-05T06:40:33Z","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":"760c683749c64d018457ad555ecd78b040da0236308a3d1e9cba1a48e44494d2","cross_cats_sorted":["physics.bio-ph","q-bio.CB"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.med-ph","submitted_at":"2023-04-18T20:28:19Z","title_canon_sha256":"3d74ceb18ee03f1a7de899f73b20188a512f640d522ae7b41009d9d58997c74a"},"schema_version":"1.0","source":{"id":"2304.09275","kind":"arxiv","version":2}},"canonical_sha256":"9365dc68f5799069e2c2643a3f67bd48a3e70c66adb294ea719ff0406531f3f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9365dc68f5799069e2c2643a3f67bd48a3e70c66adb294ea719ff0406531f3f8","first_computed_at":"2026-07-05T06:40:33.359051Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:40:33.359051Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5+CBE23yxgo5pdRBoY4lCTB/y/Z3NxnBDBVmVkhR2XUQNQTUUH2C4ZDx8ss7vN36W2nwkbKYGOVLF9PxTeZyBA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:40:33.359464Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.09275","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:14f97dfe07f4a870f18aeba03856408691cac2a17bc3f240dfe5864a9e174836","sha256:6e17fc6af303aec4b03ac522874b51401192f554302936327b8fc40a803fc82c"],"state_sha256":"a00412cb5243f06446a8130d4f40943a45ca3cb56575d1f64622d47da5942b45"}