{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:T7NBRRNOX6DXQE6UWVPP45HU2X","short_pith_number":"pith:T7NBRRNO","canonical_record":{"source":{"id":"2007.04480","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-08T23:58:41Z","cross_cats_sorted":["cs.CV","cs.LG","stat.ML"],"title_canon_sha256":"07c9caf0731c5bf62cb6cf04983f7c47e11d49e9e5ae2a0566216b9cb3e69849","abstract_canon_sha256":"5094f0459e7fcfb824505e8b48cd7a7b7b591c5f9eba54c2765366603ea3dc57"},"schema_version":"1.0"},"canonical_sha256":"9fda18c5aebf877813d4b55efe74f4d5d07d72b2f1d2bb468bbbba12b8a0c6f3","source":{"kind":"arxiv","id":"2007.04480","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.04480","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"arxiv_version","alias_value":"2007.04480v1","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.04480","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"pith_short_12","alias_value":"T7NBRRNOX6DX","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"pith_short_16","alias_value":"T7NBRRNOX6DXQE6U","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"pith_short_8","alias_value":"T7NBRRNO","created_at":"2026-07-05T01:17:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:T7NBRRNOX6DXQE6UWVPP45HU2X","target":"record","payload":{"canonical_record":{"source":{"id":"2007.04480","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-08T23:58:41Z","cross_cats_sorted":["cs.CV","cs.LG","stat.ML"],"title_canon_sha256":"07c9caf0731c5bf62cb6cf04983f7c47e11d49e9e5ae2a0566216b9cb3e69849","abstract_canon_sha256":"5094f0459e7fcfb824505e8b48cd7a7b7b591c5f9eba54c2765366603ea3dc57"},"schema_version":"1.0"},"canonical_sha256":"9fda18c5aebf877813d4b55efe74f4d5d07d72b2f1d2bb468bbbba12b8a0c6f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:17:30.514890Z","signature_b64":"fcrrGizjTskLybFfSvl/rmqaZ4Psb9z5BskjKKi5Ld/9ZWO4444SG4axsqa0L3rCNcZCRFDcgLWod+m4T9j1CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9fda18c5aebf877813d4b55efe74f4d5d07d72b2f1d2bb468bbbba12b8a0c6f3","last_reissued_at":"2026-07-05T01:17:30.514468Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:17:30.514468Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.04480","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":"2026-07-05T01:17:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eStARh82zgWugA/hGE2i89gAW0P0FAwRqE1Gsrkyl/8yDQOFnuNdETu3tBCVBCVwV6pTYW5regLKERFxgL0gDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T18:51:20.522708Z"},"content_sha256":"17bd0f7cbfd924aa052ea0d05f64862813fee9b04f067a40434cd12770d47fe6","schema_version":"1.0","event_id":"sha256:17bd0f7cbfd924aa052ea0d05f64862813fee9b04f067a40434cd12770d47fe6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:T7NBRRNOX6DXQE6UWVPP45HU2X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automatic Probe Movement Guidance for Freehand Obstetric Ultrasound","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV","cs.LG","stat.ML"],"primary_cat":"eess.IV","authors_text":"Aris T. Papageorghiou, J. Alison Noble, Lior Drukker, Richard Droste","submitted_at":"2020-07-08T23:58:41Z","abstract_excerpt":"We present the first system that provides real-time probe movement guidance for acquiring standard planes in routine freehand obstetric ultrasound scanning. Such a system can contribute to the worldwide deployment of obstetric ultrasound scanning by lowering the required level of operator expertise. The system employs an artificial neural network that receives the ultrasound video signal and the motion signal of an inertial measurement unit (IMU) that is attached to the probe, and predicts a guidance signal. The network termed US-GuideNet predicts either the movement towards the standard plane"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.04480","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/2007.04480/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":"2026-07-05T01:17:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+oyQHOkGsCGjHNBmqixyn/4Ep2IxeNrr9fNOrKbbDxMJilV12YOF+gTr5n6G8/QIglJTDah56qmiAzDJsXbvAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T18:51:20.523225Z"},"content_sha256":"0393437424d8213c7fdb7f24d7213600e6b6b8da805577ae9259bf76c0a74f83","schema_version":"1.0","event_id":"sha256:0393437424d8213c7fdb7f24d7213600e6b6b8da805577ae9259bf76c0a74f83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T7NBRRNOX6DXQE6UWVPP45HU2X/bundle.json","state_url":"https://pith.science/pith/T7NBRRNOX6DXQE6UWVPP45HU2X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T7NBRRNOX6DXQE6UWVPP45HU2X/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":"2026-08-10T18:51:20Z","links":{"resolver":"https://pith.science/pith/T7NBRRNOX6DXQE6UWVPP45HU2X","bundle":"https://pith.science/pith/T7NBRRNOX6DXQE6UWVPP45HU2X/bundle.json","state":"https://pith.science/pith/T7NBRRNOX6DXQE6UWVPP45HU2X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T7NBRRNOX6DXQE6UWVPP45HU2X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:T7NBRRNOX6DXQE6UWVPP45HU2X","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":"5094f0459e7fcfb824505e8b48cd7a7b7b591c5f9eba54c2765366603ea3dc57","cross_cats_sorted":["cs.CV","cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-08T23:58:41Z","title_canon_sha256":"07c9caf0731c5bf62cb6cf04983f7c47e11d49e9e5ae2a0566216b9cb3e69849"},"schema_version":"1.0","source":{"id":"2007.04480","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.04480","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"arxiv_version","alias_value":"2007.04480v1","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.04480","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"pith_short_12","alias_value":"T7NBRRNOX6DX","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"pith_short_16","alias_value":"T7NBRRNOX6DXQE6U","created_at":"2026-07-05T01:17:30Z"},{"alias_kind":"pith_short_8","alias_value":"T7NBRRNO","created_at":"2026-07-05T01:17:30Z"}],"graph_snapshots":[{"event_id":"sha256:0393437424d8213c7fdb7f24d7213600e6b6b8da805577ae9259bf76c0a74f83","target":"graph","created_at":"2026-07-05T01:17:30Z","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/2007.04480/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the first system that provides real-time probe movement guidance for acquiring standard planes in routine freehand obstetric ultrasound scanning. Such a system can contribute to the worldwide deployment of obstetric ultrasound scanning by lowering the required level of operator expertise. The system employs an artificial neural network that receives the ultrasound video signal and the motion signal of an inertial measurement unit (IMU) that is attached to the probe, and predicts a guidance signal. The network termed US-GuideNet predicts either the movement towards the standard plane","authors_text":"Aris T. Papageorghiou, J. Alison Noble, Lior Drukker, Richard Droste","cross_cats":["cs.CV","cs.LG","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-08T23:58:41Z","title":"Automatic Probe Movement Guidance for Freehand Obstetric Ultrasound"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.04480","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":"sha256:17bd0f7cbfd924aa052ea0d05f64862813fee9b04f067a40434cd12770d47fe6","target":"record","created_at":"2026-07-05T01:17:30Z","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":"5094f0459e7fcfb824505e8b48cd7a7b7b591c5f9eba54c2765366603ea3dc57","cross_cats_sorted":["cs.CV","cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-08T23:58:41Z","title_canon_sha256":"07c9caf0731c5bf62cb6cf04983f7c47e11d49e9e5ae2a0566216b9cb3e69849"},"schema_version":"1.0","source":{"id":"2007.04480","kind":"arxiv","version":1}},"canonical_sha256":"9fda18c5aebf877813d4b55efe74f4d5d07d72b2f1d2bb468bbbba12b8a0c6f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9fda18c5aebf877813d4b55efe74f4d5d07d72b2f1d2bb468bbbba12b8a0c6f3","first_computed_at":"2026-07-05T01:17:30.514468Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:17:30.514468Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fcrrGizjTskLybFfSvl/rmqaZ4Psb9z5BskjKKi5Ld/9ZWO4444SG4axsqa0L3rCNcZCRFDcgLWod+m4T9j1CA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:17:30.514890Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.04480","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17bd0f7cbfd924aa052ea0d05f64862813fee9b04f067a40434cd12770d47fe6","sha256:0393437424d8213c7fdb7f24d7213600e6b6b8da805577ae9259bf76c0a74f83"],"state_sha256":"afeee79cfa390ad59da0eaf9d0194314c0443dcd784ec325feb6a13aed61b4cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jf4Rsht/hNqz4VBDBj2YsaAkTzYRLu64Mu8gk5O2o8BEqpsglCgN3YuXJq5MxelCzEN7PqivN/mDcGdyb3QYBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T18:51:20.528592Z","bundle_sha256":"aa10f9de369ad0792df6d02a6cce2325e649481477a673707421ad4d321f0a23"}}