{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:XRH25SUPWVSSWO62FL47VR4M37","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":"ec40c1fd32c757de29896f174591bed92b4d37af521f1a6de112b90b474943a3","cross_cats_sorted":["cs.CE","math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2011-11-10T21:17:55Z","title_canon_sha256":"c92189549c19055a40017a5f0550935b9a299be23353b89ce3bc221c51d85e03"},"schema_version":"1.0","source":{"id":"1111.2616","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.2616","created_at":"2026-05-18T04:08:33Z"},{"alias_kind":"arxiv_version","alias_value":"1111.2616v1","created_at":"2026-05-18T04:08:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.2616","created_at":"2026-05-18T04:08:33Z"},{"alias_kind":"pith_short_12","alias_value":"XRH25SUPWVSS","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"XRH25SUPWVSSWO62","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"XRH25SUP","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:95e78e48f4a075ba08756669ec2a1dc8da6e70b9ff92103abcd51815ddc095df","target":"graph","created_at":"2026-05-18T04:08:33Z","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"},"paper":{"abstract_excerpt":"Breast X-ray CT imaging is being considered in screening as an extension to mammography. As a large fraction of the population will be exposed to radiation, low-dose imaging is essential. Iterative image reconstruction based on solving an optimization problem, such as Total-Variation minimization, shows potential for reconstruction from sparse-view data. For iterative methods it is important to ensure convergence to an accurate solution, since important image features, such as presence of microcalcifications indicating breast cancer, may not be visible in a non-converged reconstruction, and th","authors_text":"Emil Y. Sidky, Jakob H. J{\\o}rgensen, Xiaochuan Pan","cross_cats":["cs.CE","math.OC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2011-11-10T21:17:55Z","title":"Ensuring convergence in total-variation-based reconstruction for accurate microcalcification imaging in breast X-ray CT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.2616","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":"sha256:0a50b68fa41bd49eb969cc2d6f291b9e67d9496ddebc3a32b3367cdf02e769b2","target":"record","created_at":"2026-05-18T04:08:33Z","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":"ec40c1fd32c757de29896f174591bed92b4d37af521f1a6de112b90b474943a3","cross_cats_sorted":["cs.CE","math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2011-11-10T21:17:55Z","title_canon_sha256":"c92189549c19055a40017a5f0550935b9a299be23353b89ce3bc221c51d85e03"},"schema_version":"1.0","source":{"id":"1111.2616","kind":"arxiv","version":1}},"canonical_sha256":"bc4faeca8fb5652b3bda2af9fac78cdfe71895fe2374916446bc8b6abaafea0d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc4faeca8fb5652b3bda2af9fac78cdfe71895fe2374916446bc8b6abaafea0d","first_computed_at":"2026-05-18T04:08:33.156892Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:33.156892Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"62b6FbL6w3GTvyJeOxr1V4YBRV2wkMTxFvTyFKi/y4HA4A9CTz6fbfheOxoLUCIl+T58/TZBAhQGSv1uUoByBg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:33.157429Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.2616","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a50b68fa41bd49eb969cc2d6f291b9e67d9496ddebc3a32b3367cdf02e769b2","sha256:95e78e48f4a075ba08756669ec2a1dc8da6e70b9ff92103abcd51815ddc095df"],"state_sha256":"6434717c70908b5adf7875064772a91e71d97723d5c444f82871ca15d7e3464f"}