{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:2R74ZXC5JETV6RWMO2E4I3CXFI","short_pith_number":"pith:2R74ZXC5","schema_version":"1.0","canonical_sha256":"d47fccdc5d49275f46cc7689c46c572a2a4e41f304434ebd1db4080417ddade8","source":{"kind":"arxiv","id":"1907.08196","version":1},"attestation_state":"computed","paper":{"title":"Exploiting bilateral symmetry in brain lesion segmentation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV","cs.LG","q-bio.NC"],"primary_cat":"eess.IV","authors_text":"Kevin Raina, Tanya Schmah, Uladzimir Yahorau","submitted_at":"2019-07-18T13:42:22Z","abstract_excerpt":"Brain lesions, including stroke and tumours, have a high degree of variability in terms of location, size, intensity and form, making automatic segmentation difficult. We propose an improvement to existing segmentation methods by exploiting the bilateral quasi-symmetry of healthy brains, which breaks down when lesions are present. Specifically, we use nonlinear registration of a neuroimage to a reflected version of itself (\"reflective registration\") to determine for each voxel its homologous (corresponding) voxel in the other hemisphere. A patch around the homologous voxel is added as a set of"},"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":"1907.08196","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-07-18T13:42:22Z","cross_cats_sorted":["cs.CV","cs.LG","q-bio.NC"],"title_canon_sha256":"906f54670a5e9bd551785a89443692462f7a9f240d060ca14d448168546db211","abstract_canon_sha256":"32bf8acde7d05c1b4a83013a5e481ef3dd4a56d2013419159c3e6a78d030d1d1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:10.515530Z","signature_b64":"ZlSkdDduTSyJ0q3S43MLjS2/FjiYR7so+w4rzjAfc0ikXdOZO2EbqU7INXuRwXKJ3OEdxmLoTqr2QZn91g3hCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d47fccdc5d49275f46cc7689c46c572a2a4e41f304434ebd1db4080417ddade8","last_reissued_at":"2026-05-17T23:40:10.514873Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:10.514873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Exploiting bilateral symmetry in brain lesion segmentation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV","cs.LG","q-bio.NC"],"primary_cat":"eess.IV","authors_text":"Kevin Raina, Tanya Schmah, Uladzimir Yahorau","submitted_at":"2019-07-18T13:42:22Z","abstract_excerpt":"Brain lesions, including stroke and tumours, have a high degree of variability in terms of location, size, intensity and form, making automatic segmentation difficult. We propose an improvement to existing segmentation methods by exploiting the bilateral quasi-symmetry of healthy brains, which breaks down when lesions are present. Specifically, we use nonlinear registration of a neuroimage to a reflected version of itself (\"reflective registration\") to determine for each voxel its homologous (corresponding) voxel in the other hemisphere. A patch around the homologous voxel is added as a set of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08196","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":""},"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":"1907.08196","created_at":"2026-05-17T23:40:10.514960+00:00"},{"alias_kind":"arxiv_version","alias_value":"1907.08196v1","created_at":"2026-05-17T23:40:10.514960+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08196","created_at":"2026-05-17T23:40:10.514960+00:00"},{"alias_kind":"pith_short_12","alias_value":"2R74ZXC5JETV","created_at":"2026-05-18T12:33:07.085635+00:00"},{"alias_kind":"pith_short_16","alias_value":"2R74ZXC5JETV6RWM","created_at":"2026-05-18T12:33:07.085635+00:00"},{"alias_kind":"pith_short_8","alias_value":"2R74ZXC5","created_at":"2026-05-18T12:33:07.085635+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/2R74ZXC5JETV6RWMO2E4I3CXFI","json":"https://pith.science/pith/2R74ZXC5JETV6RWMO2E4I3CXFI.json","graph_json":"https://pith.science/api/pith-number/2R74ZXC5JETV6RWMO2E4I3CXFI/graph.json","events_json":"https://pith.science/api/pith-number/2R74ZXC5JETV6RWMO2E4I3CXFI/events.json","paper":"https://pith.science/paper/2R74ZXC5"},"agent_actions":{"view_html":"https://pith.science/pith/2R74ZXC5JETV6RWMO2E4I3CXFI","download_json":"https://pith.science/pith/2R74ZXC5JETV6RWMO2E4I3CXFI.json","view_paper":"https://pith.science/paper/2R74ZXC5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1907.08196&json=true","fetch_graph":"https://pith.science/api/pith-number/2R74ZXC5JETV6RWMO2E4I3CXFI/graph.json","fetch_events":"https://pith.science/api/pith-number/2R74ZXC5JETV6RWMO2E4I3CXFI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2R74ZXC5JETV6RWMO2E4I3CXFI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2R74ZXC5JETV6RWMO2E4I3CXFI/action/storage_attestation","attest_author":"https://pith.science/pith/2R74ZXC5JETV6RWMO2E4I3CXFI/action/author_attestation","sign_citation":"https://pith.science/pith/2R74ZXC5JETV6RWMO2E4I3CXFI/action/citation_signature","submit_replication":"https://pith.science/pith/2R74ZXC5JETV6RWMO2E4I3CXFI/action/replication_record"}},"created_at":"2026-05-17T23:40:10.514960+00:00","updated_at":"2026-05-17T23:40:10.514960+00:00"}