{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:V4APQH2E7XOMCHNFSYPILBKDK2","short_pith_number":"pith:V4APQH2E","schema_version":"1.0","canonical_sha256":"af00f81f44fddcc11da5961e85854356aae8e4ee74a17a7bf7a33123955d8076","source":{"kind":"arxiv","id":"1707.08391","version":3},"attestation_state":"computed","paper":{"title":"Maximum entropy based non-negative optoacoustic tomographic image reconstruction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV","eess.IV","physics.optics"],"primary_cat":"physics.med-ph","authors_text":"Daniel Razansky, Jaya Prakash, Subhamoy Mandal, Vasilis Ntziachristos","submitted_at":"2017-07-26T11:50:06Z","abstract_excerpt":"Objective:Optoacoustic (photoacoustic) tomography is aimed at reconstructing maps of the initial pressure rise induced by the absorption of light pulses in tissue. In practice, due to inaccurate assumptions in the forward model, noise and other experimental factors, the images are often afflicted by artifacts, occasionally manifested as negative values. The aim of the work is to develop an inversion method which reduces the occurrence of negative values and improves the quantitative performance of optoacoustic imaging. Methods: We present a novel method for optoacoustic tomography based on an "},"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":"1707.08391","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-07-26T11:50:06Z","cross_cats_sorted":["cs.CV","eess.IV","physics.optics"],"title_canon_sha256":"fce8f2267155a6e02957299dc322118639fc8a727e541ae8c7d173441a8c8924","abstract_canon_sha256":"b3d4d0de65cf2e4e43112d3ba1b421b75fddcc39823330e4a82697267f08904f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:05.596212Z","signature_b64":"gCRPFTabQhFa4XzduuVkIu6MG/j96JeHhvedXa/29+0lfIXXH7jR5oGPTRfkA39558dQi1EoxxgwYrFLDFvEBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af00f81f44fddcc11da5961e85854356aae8e4ee74a17a7bf7a33123955d8076","last_reissued_at":"2026-05-17T23:56:05.595507Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:05.595507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Maximum entropy based non-negative optoacoustic tomographic image reconstruction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV","eess.IV","physics.optics"],"primary_cat":"physics.med-ph","authors_text":"Daniel Razansky, Jaya Prakash, Subhamoy Mandal, Vasilis Ntziachristos","submitted_at":"2017-07-26T11:50:06Z","abstract_excerpt":"Objective:Optoacoustic (photoacoustic) tomography is aimed at reconstructing maps of the initial pressure rise induced by the absorption of light pulses in tissue. In practice, due to inaccurate assumptions in the forward model, noise and other experimental factors, the images are often afflicted by artifacts, occasionally manifested as negative values. The aim of the work is to develop an inversion method which reduces the occurrence of negative values and improves the quantitative performance of optoacoustic imaging. Methods: We present a novel method for optoacoustic tomography based on an "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.08391","kind":"arxiv","version":3},"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":"1707.08391","created_at":"2026-05-17T23:56:05.595614+00:00"},{"alias_kind":"arxiv_version","alias_value":"1707.08391v3","created_at":"2026-05-17T23:56:05.595614+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.08391","created_at":"2026-05-17T23:56:05.595614+00:00"},{"alias_kind":"pith_short_12","alias_value":"V4APQH2E7XOM","created_at":"2026-05-18T12:31:49.984773+00:00"},{"alias_kind":"pith_short_16","alias_value":"V4APQH2E7XOMCHNF","created_at":"2026-05-18T12:31:49.984773+00:00"},{"alias_kind":"pith_short_8","alias_value":"V4APQH2E","created_at":"2026-05-18T12:31:49.984773+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/V4APQH2E7XOMCHNFSYPILBKDK2","json":"https://pith.science/pith/V4APQH2E7XOMCHNFSYPILBKDK2.json","graph_json":"https://pith.science/api/pith-number/V4APQH2E7XOMCHNFSYPILBKDK2/graph.json","events_json":"https://pith.science/api/pith-number/V4APQH2E7XOMCHNFSYPILBKDK2/events.json","paper":"https://pith.science/paper/V4APQH2E"},"agent_actions":{"view_html":"https://pith.science/pith/V4APQH2E7XOMCHNFSYPILBKDK2","download_json":"https://pith.science/pith/V4APQH2E7XOMCHNFSYPILBKDK2.json","view_paper":"https://pith.science/paper/V4APQH2E","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1707.08391&json=true","fetch_graph":"https://pith.science/api/pith-number/V4APQH2E7XOMCHNFSYPILBKDK2/graph.json","fetch_events":"https://pith.science/api/pith-number/V4APQH2E7XOMCHNFSYPILBKDK2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/V4APQH2E7XOMCHNFSYPILBKDK2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/V4APQH2E7XOMCHNFSYPILBKDK2/action/storage_attestation","attest_author":"https://pith.science/pith/V4APQH2E7XOMCHNFSYPILBKDK2/action/author_attestation","sign_citation":"https://pith.science/pith/V4APQH2E7XOMCHNFSYPILBKDK2/action/citation_signature","submit_replication":"https://pith.science/pith/V4APQH2E7XOMCHNFSYPILBKDK2/action/replication_record"}},"created_at":"2026-05-17T23:56:05.595614+00:00","updated_at":"2026-05-17T23:56:05.595614+00:00"}