{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:ND4G6IE766AE3FFCOER6EBUAZA","short_pith_number":"pith:ND4G6IE7","schema_version":"1.0","canonical_sha256":"68f86f209ff7804d94a27123e20680c81c20b4e287857ada5d8306e03936cbd2","source":{"kind":"arxiv","id":"1902.02631","version":1},"attestation_state":"computed","paper":{"title":"3-D Super-Resolution Ultrasound (SR-US) Imaging using a 2-D Sparse Array with High Volumetric Imaging Rate","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"A. Ramalli, C. Dunsby, C.H. Leow, E. Boni, G. Zhang, J. Brown, J. Zhu, K. Christensen-Jeffries, M. Toulemonde, M-X. Tang, P. Tortoli, R.J. Eckersley, S. Harput","submitted_at":"2019-02-05T21:43:19Z","abstract_excerpt":"Super-resolution ultrasound imaging has been so far achieved in 3-D by mechanically scanning a volume with a linear probe, by co-aligning multiple linear probes, by using multiplexed 3-D clinical ultrasound systems, or by using 3-D ultrasound research systems. In this study, a 2-D sparse array was designed with 512 elements according to a density-tapered 2-D spiral layout and optimized to reduce the sidelobes of the transmitted beam profile. High frame rate volumetric imaging with compounded plane waves was performed using two synchronized ULA-OP 256 systems. Localization-based 3-D super-resol"},"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":"1902.02631","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2019-02-05T21:43:19Z","cross_cats_sorted":[],"title_canon_sha256":"6c5647a25fb0b51dbd87d02c56c9c10a7512cffd0040574a86261aeb99a4e2ca","abstract_canon_sha256":"3e1f86cad3539a8cdad3e2a40fa51d9bb7b83619daead01f2137d48a66db13af"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:32.657524Z","signature_b64":"7S/4eEimqUjS1FeqgnbRcmDwYJlW8MJzRjgat1H9HMsLtNH9Lzyw65wowI7S/rC41b+jmhIGJzU+idHkiid/CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68f86f209ff7804d94a27123e20680c81c20b4e287857ada5d8306e03936cbd2","last_reissued_at":"2026-05-17T23:54:32.656894Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:32.656894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"3-D Super-Resolution Ultrasound (SR-US) Imaging using a 2-D Sparse Array with High Volumetric Imaging Rate","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"A. Ramalli, C. Dunsby, C.H. Leow, E. Boni, G. Zhang, J. Brown, J. Zhu, K. Christensen-Jeffries, M. Toulemonde, M-X. Tang, P. Tortoli, R.J. Eckersley, S. Harput","submitted_at":"2019-02-05T21:43:19Z","abstract_excerpt":"Super-resolution ultrasound imaging has been so far achieved in 3-D by mechanically scanning a volume with a linear probe, by co-aligning multiple linear probes, by using multiplexed 3-D clinical ultrasound systems, or by using 3-D ultrasound research systems. In this study, a 2-D sparse array was designed with 512 elements according to a density-tapered 2-D spiral layout and optimized to reduce the sidelobes of the transmitted beam profile. High frame rate volumetric imaging with compounded plane waves was performed using two synchronized ULA-OP 256 systems. Localization-based 3-D super-resol"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.02631","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":"1902.02631","created_at":"2026-05-17T23:54:32.656998+00:00"},{"alias_kind":"arxiv_version","alias_value":"1902.02631v1","created_at":"2026-05-17T23:54:32.656998+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.02631","created_at":"2026-05-17T23:54:32.656998+00:00"},{"alias_kind":"pith_short_12","alias_value":"ND4G6IE766AE","created_at":"2026-05-18T12:33:24.271573+00:00"},{"alias_kind":"pith_short_16","alias_value":"ND4G6IE766AE3FFC","created_at":"2026-05-18T12:33:24.271573+00:00"},{"alias_kind":"pith_short_8","alias_value":"ND4G6IE7","created_at":"2026-05-18T12:33:24.271573+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/ND4G6IE766AE3FFCOER6EBUAZA","json":"https://pith.science/pith/ND4G6IE766AE3FFCOER6EBUAZA.json","graph_json":"https://pith.science/api/pith-number/ND4G6IE766AE3FFCOER6EBUAZA/graph.json","events_json":"https://pith.science/api/pith-number/ND4G6IE766AE3FFCOER6EBUAZA/events.json","paper":"https://pith.science/paper/ND4G6IE7"},"agent_actions":{"view_html":"https://pith.science/pith/ND4G6IE766AE3FFCOER6EBUAZA","download_json":"https://pith.science/pith/ND4G6IE766AE3FFCOER6EBUAZA.json","view_paper":"https://pith.science/paper/ND4G6IE7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1902.02631&json=true","fetch_graph":"https://pith.science/api/pith-number/ND4G6IE766AE3FFCOER6EBUAZA/graph.json","fetch_events":"https://pith.science/api/pith-number/ND4G6IE766AE3FFCOER6EBUAZA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ND4G6IE766AE3FFCOER6EBUAZA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ND4G6IE766AE3FFCOER6EBUAZA/action/storage_attestation","attest_author":"https://pith.science/pith/ND4G6IE766AE3FFCOER6EBUAZA/action/author_attestation","sign_citation":"https://pith.science/pith/ND4G6IE766AE3FFCOER6EBUAZA/action/citation_signature","submit_replication":"https://pith.science/pith/ND4G6IE766AE3FFCOER6EBUAZA/action/replication_record"}},"created_at":"2026-05-17T23:54:32.656998+00:00","updated_at":"2026-05-17T23:54:32.656998+00:00"}