{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:I7ULDV64ON7D3DBNZD72ENIPGQ","short_pith_number":"pith:I7ULDV64","schema_version":"1.0","canonical_sha256":"47e8b1d7dc737e3d8c2dc8ffa2350f341c70c67e4fcc9000300c901f88274c6d","source":{"kind":"arxiv","id":"2203.16398","version":1},"attestation_state":"computed","paper":{"title":"Incorporating Gradient Similarity for Robust Time Delay Estimation in Ultrasound Elastography","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.med-ph"],"primary_cat":"eess.IV","authors_text":"Hassan Rivaz, Md Ashikuzzaman, Timothy J. Hall","submitted_at":"2022-03-30T15:27:10Z","abstract_excerpt":"Energy-based ultrasound elastography techniques minimize a regularized cost function consisting of data and continuity terms to obtain local displacement estimates based on the local time-delay estimation (TDE) between radio-frequency (RF) frames. The data term associated with the existing techniques takes only the amplitude similarity into account and hence is not sufficiently robust to the outlier samples present in the RF frames under consideration. This drawback creates noticeable artifacts in the strain image. To resolve this issue, we propose to formulate the data function as a linear co"},"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":"2203.16398","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2022-03-30T15:27:10Z","cross_cats_sorted":["physics.med-ph"],"title_canon_sha256":"218bf56b938337955aac3e7f3702e9684ca33ac62d18b4dfdbdf8d55b9eda622","abstract_canon_sha256":"dfe3404ec9919b9539f6e891f7e4ccf71735baa9f5aa10e13d4c9a658f0cd971"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:10:10.382623Z","signature_b64":"AAieghlkSmkziHdL1unXNrVhIFmZSIjwpXHEHgTqfdxXBnsYhny3/2YhYu8SswJCXZS6KJH58dIOqhwS2yVHDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"47e8b1d7dc737e3d8c2dc8ffa2350f341c70c67e4fcc9000300c901f88274c6d","last_reissued_at":"2026-07-05T04:10:10.382285Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:10:10.382285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Incorporating Gradient Similarity for Robust Time Delay Estimation in Ultrasound Elastography","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.med-ph"],"primary_cat":"eess.IV","authors_text":"Hassan Rivaz, Md Ashikuzzaman, Timothy J. Hall","submitted_at":"2022-03-30T15:27:10Z","abstract_excerpt":"Energy-based ultrasound elastography techniques minimize a regularized cost function consisting of data and continuity terms to obtain local displacement estimates based on the local time-delay estimation (TDE) between radio-frequency (RF) frames. The data term associated with the existing techniques takes only the amplitude similarity into account and hence is not sufficiently robust to the outlier samples present in the RF frames under consideration. This drawback creates noticeable artifacts in the strain image. To resolve this issue, we propose to formulate the data function as a linear co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.16398","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/2203.16398/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":"2203.16398","created_at":"2026-07-05T04:10:10.382343+00:00"},{"alias_kind":"arxiv_version","alias_value":"2203.16398v1","created_at":"2026-07-05T04:10:10.382343+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.16398","created_at":"2026-07-05T04:10:10.382343+00:00"},{"alias_kind":"pith_short_12","alias_value":"I7ULDV64ON7D","created_at":"2026-07-05T04:10:10.382343+00:00"},{"alias_kind":"pith_short_16","alias_value":"I7ULDV64ON7D3DBN","created_at":"2026-07-05T04:10:10.382343+00:00"},{"alias_kind":"pith_short_8","alias_value":"I7ULDV64","created_at":"2026-07-05T04:10:10.382343+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/I7ULDV64ON7D3DBNZD72ENIPGQ","json":"https://pith.science/pith/I7ULDV64ON7D3DBNZD72ENIPGQ.json","graph_json":"https://pith.science/api/pith-number/I7ULDV64ON7D3DBNZD72ENIPGQ/graph.json","events_json":"https://pith.science/api/pith-number/I7ULDV64ON7D3DBNZD72ENIPGQ/events.json","paper":"https://pith.science/paper/I7ULDV64"},"agent_actions":{"view_html":"https://pith.science/pith/I7ULDV64ON7D3DBNZD72ENIPGQ","download_json":"https://pith.science/pith/I7ULDV64ON7D3DBNZD72ENIPGQ.json","view_paper":"https://pith.science/paper/I7ULDV64","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2203.16398&json=true","fetch_graph":"https://pith.science/api/pith-number/I7ULDV64ON7D3DBNZD72ENIPGQ/graph.json","fetch_events":"https://pith.science/api/pith-number/I7ULDV64ON7D3DBNZD72ENIPGQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/I7ULDV64ON7D3DBNZD72ENIPGQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/I7ULDV64ON7D3DBNZD72ENIPGQ/action/storage_attestation","attest_author":"https://pith.science/pith/I7ULDV64ON7D3DBNZD72ENIPGQ/action/author_attestation","sign_citation":"https://pith.science/pith/I7ULDV64ON7D3DBNZD72ENIPGQ/action/citation_signature","submit_replication":"https://pith.science/pith/I7ULDV64ON7D3DBNZD72ENIPGQ/action/replication_record"}},"created_at":"2026-07-05T04:10:10.382343+00:00","updated_at":"2026-07-05T04:10:10.382343+00:00"}