{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:CKZO24O6ZRKIWI2S4VNDHUTNRP","short_pith_number":"pith:CKZO24O6","canonical_record":{"source":{"id":"2501.01341","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2025-01-02T16:47:09Z","cross_cats_sorted":[],"title_canon_sha256":"c1b61923b13f1893bec673b8aed5a8677bb595867e8684c3815a993b25be729e","abstract_canon_sha256":"870073cc65f0d76f06c1f4c2ace9a5ce445154d18c1c12d26a5f6a5c96059122"},"schema_version":"1.0"},"canonical_sha256":"12b2ed71decc548b2352e55a33d26d8be11828241fb1c91809839370255c932a","source":{"kind":"arxiv","id":"2501.01341","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.01341","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"arxiv_version","alias_value":"2501.01341v4","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.01341","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"pith_short_12","alias_value":"CKZO24O6ZRKI","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"pith_short_16","alias_value":"CKZO24O6ZRKIWI2S","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"pith_short_8","alias_value":"CKZO24O6","created_at":"2026-07-05T10:10:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:CKZO24O6ZRKIWI2S4VNDHUTNRP","target":"record","payload":{"canonical_record":{"source":{"id":"2501.01341","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2025-01-02T16:47:09Z","cross_cats_sorted":[],"title_canon_sha256":"c1b61923b13f1893bec673b8aed5a8677bb595867e8684c3815a993b25be729e","abstract_canon_sha256":"870073cc65f0d76f06c1f4c2ace9a5ce445154d18c1c12d26a5f6a5c96059122"},"schema_version":"1.0"},"canonical_sha256":"12b2ed71decc548b2352e55a33d26d8be11828241fb1c91809839370255c932a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:10:47.646986Z","signature_b64":"s3Mf0ZmhDGSJnNEjZoTyKVVqVwFfM1fwqmhZ25pj/4YM/btzu8qcung/lg32nFWWfdFMSOdNGIiXI6TpmQhUDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"12b2ed71decc548b2352e55a33d26d8be11828241fb1c91809839370255c932a","last_reissued_at":"2026-07-05T10:10:47.646577Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:10:47.646577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.01341","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:10:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"svlA279nVn3UKM5sSUOQiZXsSaYEPn/ZKTJw8ak7ZDRJPumJoXIi7kQWENWzJIPXbfbmUkVCxPrWLO0IEwPWDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:26:06.827401Z"},"content_sha256":"2e2f0414a214e5875190ea632c229a910b3c6fc213bad03049b82465efd52ae1","schema_version":"1.0","event_id":"sha256:2e2f0414a214e5875190ea632c229a910b3c6fc213bad03049b82465efd52ae1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:CKZO24O6ZRKIWI2S4VNDHUTNRP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evaluation of Deep Learning-based Scatter Correction on a Long-axial Field-of-view PET scanner","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Alexandre Bousse, Axel Rominger, Baptiste Laurent, Dimitris Visvikis, Kuangyu Shi, Thibaut Merlin","submitted_at":"2025-01-02T16:47:09Z","abstract_excerpt":"Objective: Long-axial field-of-view (LAFOV) positron emission tomography (PET) systems allow higher sensitivity, with an increased number of detected lines of response induced by a larger angle of acceptance. However, this extended angle increases the number of multiple scatters and the scatter contribution within oblique planes. As scattering affects both quality and quantification of the reconstructed image, it is crucial to correct this effect with more accurate methods than the state-of-the-art single scatter simulation (SSS) that can reach its limits with such an extended field-of-view (F"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.01341","kind":"arxiv","version":4},"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/2501.01341/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":"2026-07-05T10:10:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"24O0SLVTkKox5jMspgV4lC42ra3SyOjURtMMRqETa0izhKUvoEISq7/3zCzMP5aKDaWIPrZPesmDW6I3qjw6Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:26:06.827991Z"},"content_sha256":"3f79a1d1b8c741a9cd45fdf15fbbc74e84c06fd55496dd57335d9dfaed476fdb","schema_version":"1.0","event_id":"sha256:3f79a1d1b8c741a9cd45fdf15fbbc74e84c06fd55496dd57335d9dfaed476fdb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CKZO24O6ZRKIWI2S4VNDHUTNRP/bundle.json","state_url":"https://pith.science/pith/CKZO24O6ZRKIWI2S4VNDHUTNRP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CKZO24O6ZRKIWI2S4VNDHUTNRP/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":"2026-08-05T14:26:06Z","links":{"resolver":"https://pith.science/pith/CKZO24O6ZRKIWI2S4VNDHUTNRP","bundle":"https://pith.science/pith/CKZO24O6ZRKIWI2S4VNDHUTNRP/bundle.json","state":"https://pith.science/pith/CKZO24O6ZRKIWI2S4VNDHUTNRP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CKZO24O6ZRKIWI2S4VNDHUTNRP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:CKZO24O6ZRKIWI2S4VNDHUTNRP","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":"870073cc65f0d76f06c1f4c2ace9a5ce445154d18c1c12d26a5f6a5c96059122","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2025-01-02T16:47:09Z","title_canon_sha256":"c1b61923b13f1893bec673b8aed5a8677bb595867e8684c3815a993b25be729e"},"schema_version":"1.0","source":{"id":"2501.01341","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.01341","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"arxiv_version","alias_value":"2501.01341v4","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.01341","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"pith_short_12","alias_value":"CKZO24O6ZRKI","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"pith_short_16","alias_value":"CKZO24O6ZRKIWI2S","created_at":"2026-07-05T10:10:47Z"},{"alias_kind":"pith_short_8","alias_value":"CKZO24O6","created_at":"2026-07-05T10:10:47Z"}],"graph_snapshots":[{"event_id":"sha256:3f79a1d1b8c741a9cd45fdf15fbbc74e84c06fd55496dd57335d9dfaed476fdb","target":"graph","created_at":"2026-07-05T10:10:47Z","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/2501.01341/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Objective: Long-axial field-of-view (LAFOV) positron emission tomography (PET) systems allow higher sensitivity, with an increased number of detected lines of response induced by a larger angle of acceptance. However, this extended angle increases the number of multiple scatters and the scatter contribution within oblique planes. As scattering affects both quality and quantification of the reconstructed image, it is crucial to correct this effect with more accurate methods than the state-of-the-art single scatter simulation (SSS) that can reach its limits with such an extended field-of-view (F","authors_text":"Alexandre Bousse, Axel Rominger, Baptiste Laurent, Dimitris Visvikis, Kuangyu Shi, Thibaut Merlin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2025-01-02T16:47:09Z","title":"Evaluation of Deep Learning-based Scatter Correction on a Long-axial Field-of-view PET scanner"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.01341","kind":"arxiv","version":4},"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":"sha256:2e2f0414a214e5875190ea632c229a910b3c6fc213bad03049b82465efd52ae1","target":"record","created_at":"2026-07-05T10:10:47Z","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":"870073cc65f0d76f06c1f4c2ace9a5ce445154d18c1c12d26a5f6a5c96059122","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2025-01-02T16:47:09Z","title_canon_sha256":"c1b61923b13f1893bec673b8aed5a8677bb595867e8684c3815a993b25be729e"},"schema_version":"1.0","source":{"id":"2501.01341","kind":"arxiv","version":4}},"canonical_sha256":"12b2ed71decc548b2352e55a33d26d8be11828241fb1c91809839370255c932a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"12b2ed71decc548b2352e55a33d26d8be11828241fb1c91809839370255c932a","first_computed_at":"2026-07-05T10:10:47.646577Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:10:47.646577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s3Mf0ZmhDGSJnNEjZoTyKVVqVwFfM1fwqmhZ25pj/4YM/btzu8qcung/lg32nFWWfdFMSOdNGIiXI6TpmQhUDA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:10:47.646986Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.01341","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e2f0414a214e5875190ea632c229a910b3c6fc213bad03049b82465efd52ae1","sha256:3f79a1d1b8c741a9cd45fdf15fbbc74e84c06fd55496dd57335d9dfaed476fdb"],"state_sha256":"f90c9bcf58e645747cd7ceb108994ff0f3fe25d9ee3a2847e347fbb014ccaed4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yPMpOJEUrfgAJ3Z8LGxsnSu5GL7hOE0WNp93COkKb/IKI5uIwQy2HfdyGh0HHrSyNoqDvtM1mVnm0OUx+CoBDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T14:26:06.855888Z","bundle_sha256":"877f5b7cdd6aecfd3d531adf88da40bad5f3da0965c63956e2b85ecb12b9907f"}}