{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:ULEAWAXZE64UQAE3MV5JW7K647","short_pith_number":"pith:ULEAWAXZ","canonical_record":{"source":{"id":"2308.11830","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-08-22T23:29:13Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"a6fb443f8882f14a5638b44c5ab89c0d106a9fc8a049072a8b0a8d7df5a569c4","abstract_canon_sha256":"3a8fb644e67f6c8012bd4779aa8494f7581306126e770cd277bf9c8f79c1f389"},"schema_version":"1.0"},"canonical_sha256":"a2c80b02f927b948009b657a9b7d5ee7d673bf3de71b0bd17981a97962cb0642","source":{"kind":"arxiv","id":"2308.11830","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.11830","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"arxiv_version","alias_value":"2308.11830v1","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.11830","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"pith_short_12","alias_value":"ULEAWAXZE64U","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"pith_short_16","alias_value":"ULEAWAXZE64UQAE3","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"pith_short_8","alias_value":"ULEAWAXZ","created_at":"2026-07-05T06:43:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:ULEAWAXZE64UQAE3MV5JW7K647","target":"record","payload":{"canonical_record":{"source":{"id":"2308.11830","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-08-22T23:29:13Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"a6fb443f8882f14a5638b44c5ab89c0d106a9fc8a049072a8b0a8d7df5a569c4","abstract_canon_sha256":"3a8fb644e67f6c8012bd4779aa8494f7581306126e770cd277bf9c8f79c1f389"},"schema_version":"1.0"},"canonical_sha256":"a2c80b02f927b948009b657a9b7d5ee7d673bf3de71b0bd17981a97962cb0642","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:43:55.489128Z","signature_b64":"9UGGksYRBMvmwxpS9Y8/xI1tI9tjchp7mvweb/ES5MDS79yD5q4bTQzVfRNze7E+a7PnECQF92ppmwJ0+WaTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2c80b02f927b948009b657a9b7d5ee7d673bf3de71b0bd17981a97962cb0642","last_reissued_at":"2026-07-05T06:43:55.488642Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:43:55.488642Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.11830","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:43:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bvY2WD70PcnPBQ5E9PrmOtR0FhiExocqTfDH1xMrdfibbF9PHd2qAtWB1zc0Eq94rhDYgi49uEJ6Xl6/V3yaBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:50:17.901739Z"},"content_sha256":"9a171f21f0eeab2237ddcc03af9f414576d21b84b89b7d63814d0cc9769d86ac","schema_version":"1.0","event_id":"sha256:9a171f21f0eeab2237ddcc03af9f414576d21b84b89b7d63814d0cc9769d86ac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:ULEAWAXZE64UQAE3MV5JW7K647","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Frequency-Space Prediction Filtering for Phase Aberration Correction in Plane-Wave Ultrasound","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["eess.SP"],"primary_cat":"eess.IV","authors_text":"Habib Benali, Hassan Rivaz, Mostafa Sharifzadeh","submitted_at":"2023-08-22T23:29:13Z","abstract_excerpt":"Ultrasound imaging often suffers from image degradation stemming from phase aberration, which represents a significant contributing factor to the overall image degradation in ultrasound imaging. Frequency-space prediction filtering or FXPF is a technique that has been applied within focused ultrasound imaging to alleviate the phase aberration effect. It presupposes the existence of an autoregressive (AR) model across the signals received at the transducer elements and removes any components that do not conform to the established model. In this study, we illustrate the challenge of applying thi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.11830","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/2308.11830/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:43:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZabRsjsvKL+mL0Cv6zrm6Qdi814YBjkOqsaIVBWI4UCES+pFtwx8UttvpI0luc58q22M9YnLQlJDNk6jBi28Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:50:17.902109Z"},"content_sha256":"a2b695b2c7c86145f6b78e2d3633bce2a373dd99d603729e67ddb2aa6dc63a1e","schema_version":"1.0","event_id":"sha256:a2b695b2c7c86145f6b78e2d3633bce2a373dd99d603729e67ddb2aa6dc63a1e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ULEAWAXZE64UQAE3MV5JW7K647/bundle.json","state_url":"https://pith.science/pith/ULEAWAXZE64UQAE3MV5JW7K647/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ULEAWAXZE64UQAE3MV5JW7K647/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-07T15:50:17Z","links":{"resolver":"https://pith.science/pith/ULEAWAXZE64UQAE3MV5JW7K647","bundle":"https://pith.science/pith/ULEAWAXZE64UQAE3MV5JW7K647/bundle.json","state":"https://pith.science/pith/ULEAWAXZE64UQAE3MV5JW7K647/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ULEAWAXZE64UQAE3MV5JW7K647/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:ULEAWAXZE64UQAE3MV5JW7K647","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":"3a8fb644e67f6c8012bd4779aa8494f7581306126e770cd277bf9c8f79c1f389","cross_cats_sorted":["eess.SP"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-08-22T23:29:13Z","title_canon_sha256":"a6fb443f8882f14a5638b44c5ab89c0d106a9fc8a049072a8b0a8d7df5a569c4"},"schema_version":"1.0","source":{"id":"2308.11830","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.11830","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"arxiv_version","alias_value":"2308.11830v1","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.11830","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"pith_short_12","alias_value":"ULEAWAXZE64U","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"pith_short_16","alias_value":"ULEAWAXZE64UQAE3","created_at":"2026-07-05T06:43:55Z"},{"alias_kind":"pith_short_8","alias_value":"ULEAWAXZ","created_at":"2026-07-05T06:43:55Z"}],"graph_snapshots":[{"event_id":"sha256:a2b695b2c7c86145f6b78e2d3633bce2a373dd99d603729e67ddb2aa6dc63a1e","target":"graph","created_at":"2026-07-05T06:43:55Z","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/2308.11830/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ultrasound imaging often suffers from image degradation stemming from phase aberration, which represents a significant contributing factor to the overall image degradation in ultrasound imaging. Frequency-space prediction filtering or FXPF is a technique that has been applied within focused ultrasound imaging to alleviate the phase aberration effect. It presupposes the existence of an autoregressive (AR) model across the signals received at the transducer elements and removes any components that do not conform to the established model. In this study, we illustrate the challenge of applying thi","authors_text":"Habib Benali, Hassan Rivaz, Mostafa Sharifzadeh","cross_cats":["eess.SP"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-08-22T23:29:13Z","title":"Frequency-Space Prediction Filtering for Phase Aberration Correction in Plane-Wave Ultrasound"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.11830","kind":"arxiv","version":1},"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":"sha256:9a171f21f0eeab2237ddcc03af9f414576d21b84b89b7d63814d0cc9769d86ac","target":"record","created_at":"2026-07-05T06:43:55Z","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":"3a8fb644e67f6c8012bd4779aa8494f7581306126e770cd277bf9c8f79c1f389","cross_cats_sorted":["eess.SP"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-08-22T23:29:13Z","title_canon_sha256":"a6fb443f8882f14a5638b44c5ab89c0d106a9fc8a049072a8b0a8d7df5a569c4"},"schema_version":"1.0","source":{"id":"2308.11830","kind":"arxiv","version":1}},"canonical_sha256":"a2c80b02f927b948009b657a9b7d5ee7d673bf3de71b0bd17981a97962cb0642","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2c80b02f927b948009b657a9b7d5ee7d673bf3de71b0bd17981a97962cb0642","first_computed_at":"2026-07-05T06:43:55.488642Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:43:55.488642Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9UGGksYRBMvmwxpS9Y8/xI1tI9tjchp7mvweb/ES5MDS79yD5q4bTQzVfRNze7E+a7PnECQF92ppmwJ0+WaTBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:43:55.489128Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.11830","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a171f21f0eeab2237ddcc03af9f414576d21b84b89b7d63814d0cc9769d86ac","sha256:a2b695b2c7c86145f6b78e2d3633bce2a373dd99d603729e67ddb2aa6dc63a1e"],"state_sha256":"a31d7905d450f4e545c718dd5fc5544557182c87856599147c1f3fe462cb8d0b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/lLuLVug5E8KKXjJ3I7r7GHlzBCAgPFaT2gEcck7Q5H/Zc7/MAdtlGb+bzbSkZ7S+13BnXFmZTP4b0TCAR43DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T15:50:17.904177Z","bundle_sha256":"7c165935a084cee758a967d701f248a3b94777c21470c3d2a583e691aea9b548"}}