{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:OF5NODXPFE7M6WSH2FZZG7KCHY","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":"549c610d076bbcde4969dde45100161346ec8ab07c25a923604350d9add24ab4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2014-08-12T05:01:18Z","title_canon_sha256":"f2a796934368e286324e38e477dc3b33ee7a0d674d7cf51fbe37a91f46230cc4"},"schema_version":"1.0","source":{"id":"1408.2617","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.2617","created_at":"2026-05-18T01:55:08Z"},{"alias_kind":"arxiv_version","alias_value":"1408.2617v1","created_at":"2026-05-18T01:55:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.2617","created_at":"2026-05-18T01:55:08Z"},{"alias_kind":"pith_short_12","alias_value":"OF5NODXPFE7M","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"OF5NODXPFE7M6WSH","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"OF5NODXP","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:5bf61abe2f5556c1ddb97cb1b9c54b8d76538d8cc2082d60d679a3d127b32786","target":"graph","created_at":"2026-05-18T01:55:08Z","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":"In the last decade C-arm-based cone-beam CT became a widely used modality for intraoperative imaging. Typically a C-arm scan is performed using a circle-like trajectory around a region of interest. Therefor an angular range of at least 180{\\deg} plus fan-angle must be covered to ensure a completely sampled data set. This fact defines some constraints on the geometry and technical specifications of a C-arm system, for example a larger C radius or a smaller C opening respectively. These technical modifications are usually not benificial in terms of handling and usability of the C-arm during clas","authors_text":"Jan Kuntz, Ludwig Ritschl, Marc Kachelrie{\\ss}","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2014-08-12T05:01:18Z","title":"The rotate-plus-shift C-arm trajectory: Complete CT data with less than 180{\\deg} rotation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.2617","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":"sha256:011c4b3383d66da3ccfd1d4fc120cbfb20198ad62424af849be19aec5760e6fe","target":"record","created_at":"2026-05-18T01:55:08Z","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":"549c610d076bbcde4969dde45100161346ec8ab07c25a923604350d9add24ab4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2014-08-12T05:01:18Z","title_canon_sha256":"f2a796934368e286324e38e477dc3b33ee7a0d674d7cf51fbe37a91f46230cc4"},"schema_version":"1.0","source":{"id":"1408.2617","kind":"arxiv","version":1}},"canonical_sha256":"717ad70eef293ecf5a47d173937d423e032c945b9178a192927655c6eeb9dc30","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"717ad70eef293ecf5a47d173937d423e032c945b9178a192927655c6eeb9dc30","first_computed_at":"2026-05-18T01:55:08.375135Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:08.375135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"roadflYiD0fdZgO11PhuXbproENgP/eotKi7rdh15HQIWz9s4EQK+QTmjqz7Y9rdDZ7m0RWZuOG8oI10RitIBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:08.375803Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.2617","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:011c4b3383d66da3ccfd1d4fc120cbfb20198ad62424af849be19aec5760e6fe","sha256:5bf61abe2f5556c1ddb97cb1b9c54b8d76538d8cc2082d60d679a3d127b32786"],"state_sha256":"9241b1be695d059373d31e568cb4f44053cdfa796d7faba1f82c5e94da7c1efd"}