{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PTC4HTVJYR7NYUNO4LLK75UWBN","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":"15355219a10d996945e38f7436899d82da51ef3b37f10fa320e7c7e1a954128d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-06-05T13:58:00Z","title_canon_sha256":"9947fba03653a314d4a5266d8a4ed7ce029b01473ff81c1cbe3ff10dcb09f406"},"schema_version":"1.0","source":{"id":"1706.01327","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.01327","created_at":"2026-05-18T00:43:03Z"},{"alias_kind":"arxiv_version","alias_value":"1706.01327v1","created_at":"2026-05-18T00:43:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.01327","created_at":"2026-05-18T00:43:03Z"},{"alias_kind":"pith_short_12","alias_value":"PTC4HTVJYR7N","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PTC4HTVJYR7NYUNO","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PTC4HTVJ","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:19a84abd834b9d35caa2640fd5781746c093419103c1b2732994d4c8dfdede69","target":"graph","created_at":"2026-05-18T00:43:03Z","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":"Coded aperture imaging transcends planar imaging with conventional collimators in efficiency and Field of View (FoV). We present experimental results for the detection of 141keV and 122keV {\\gamma}-photons emitted by uniformly extended 99mTc and 57Co hot-spots along with simulations of uniformly and normally extended 99mTc hot-spots. These results prove that the method can be used for intra-operative imaging of radio-traced sentinel nodes and thyroid remnants. The study is performed using a setup of two gamma cameras, each consisting of a coded-aperture (or mask) of Modified Uniformly Redundan","authors_text":"C. Papadimitropoulos, C. P. Lambropoulos, C. Potiriadis, D. Loukas, I. Kaissas, K. Karafasoulis","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-06-05T13:58:00Z","title":"Imaging of Spatially Extended Hot Spots with Coded Apertures for Intra-operative Nuclear Medicine Applications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.01327","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":"sha256:9a7546a054916861a84c6249ffea4ca32e9569bdf39a9a68b8c31600c498458d","target":"record","created_at":"2026-05-18T00:43:03Z","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":"15355219a10d996945e38f7436899d82da51ef3b37f10fa320e7c7e1a954128d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-06-05T13:58:00Z","title_canon_sha256":"9947fba03653a314d4a5266d8a4ed7ce029b01473ff81c1cbe3ff10dcb09f406"},"schema_version":"1.0","source":{"id":"1706.01327","kind":"arxiv","version":1}},"canonical_sha256":"7cc5c3cea9c47edc51aee2d6aff6960b6e5914dd11acfe125693776c647c4280","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7cc5c3cea9c47edc51aee2d6aff6960b6e5914dd11acfe125693776c647c4280","first_computed_at":"2026-05-18T00:43:03.845468Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:03.845468Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3gRgzSuceR7JCNCI+oWaYA1IB6tij9MAvVyag2sDFu3V+AYjlXo17ltLYzH6Ciu9GRkc0kw/DXiW3bShoIHwBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:03.846123Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.01327","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a7546a054916861a84c6249ffea4ca32e9569bdf39a9a68b8c31600c498458d","sha256:19a84abd834b9d35caa2640fd5781746c093419103c1b2732994d4c8dfdede69"],"state_sha256":"1aa36f5babcf6bc626961038c7c736401c6dddf1de6685628ed9b93a0605eb35"}