{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:WWKYLCSDPCRDES2SULVLRYBZEY","short_pith_number":"pith:WWKYLCSD","canonical_record":{"source":{"id":"1803.11289","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-03-29T23:57:07Z","cross_cats_sorted":[],"title_canon_sha256":"0f6c6d5312770ac6feabf40ffe7a0ab5c998a1e06f4762c9497509266f953603","abstract_canon_sha256":"bc452638a8f8455228cb3be21d2bb85d9f028133f289efe1b663efe1bf5ca845"},"schema_version":"1.0"},"canonical_sha256":"b595858a4378a2324b52a2eab8e039260d156af974d4a785a39923c2132e49c2","source":{"kind":"arxiv","id":"1803.11289","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.11289","created_at":"2026-05-18T00:19:46Z"},{"alias_kind":"arxiv_version","alias_value":"1803.11289v1","created_at":"2026-05-18T00:19:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.11289","created_at":"2026-05-18T00:19:46Z"},{"alias_kind":"pith_short_12","alias_value":"WWKYLCSDPCRD","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"WWKYLCSDPCRDES2S","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"WWKYLCSD","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:WWKYLCSDPCRDES2SULVLRYBZEY","target":"record","payload":{"canonical_record":{"source":{"id":"1803.11289","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-03-29T23:57:07Z","cross_cats_sorted":[],"title_canon_sha256":"0f6c6d5312770ac6feabf40ffe7a0ab5c998a1e06f4762c9497509266f953603","abstract_canon_sha256":"bc452638a8f8455228cb3be21d2bb85d9f028133f289efe1b663efe1bf5ca845"},"schema_version":"1.0"},"canonical_sha256":"b595858a4378a2324b52a2eab8e039260d156af974d4a785a39923c2132e49c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:19:46.449962Z","signature_b64":"Yb2wHIRCsiP1Fe+GmsIwk73iIVoOjCAuK7kgvrMLUYyQzYAYGQY5Wmf0IcsqHIQk/beO3FYyG++O0uSyWK0+CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b595858a4378a2324b52a2eab8e039260d156af974d4a785a39923c2132e49c2","last_reissued_at":"2026-05-18T00:19:46.449013Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:19:46.449013Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.11289","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":"2026-05-18T00:19:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/bKDpCr+I+Mrcc5M9GV1uOAuv8XtkKynd4+jmC+PD6uG7n2QE4FRIxvoG1+VCdgODGM0qL0lGq0qVVqPad4JDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T08:34:32.665760Z"},"content_sha256":"2a9b1c9aa49af95c954716698b7f64888ed7cbf2575d60215caab814958b8add","schema_version":"1.0","event_id":"sha256:2a9b1c9aa49af95c954716698b7f64888ed7cbf2575d60215caab814958b8add"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:WWKYLCSDPCRDES2SULVLRYBZEY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Application of computational breast phantoms to evaluate reconstruction methods for fluorescence molecular tomography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Abhinav K. Jha, Arman Rahmim, Yansong Zhu","submitted_at":"2018-03-29T23:57:07Z","abstract_excerpt":"Fluorescence molecular tomography (FMT) has potential of providing high contrast images for breast tumor detection. Computational phantom provides a convenient way to a wide variety of fluorophore distribution configurations in patients and perform comprehensive evaluation of the imaging systems and methods for FMT. In this study, a digital breast phantom was used to compare the performance of a novel sparsity-based reconstruction method and Tikhonov regularization method for resolving tumors with different amount of separation. The results showed that the proposed sparse reconstruction method"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.11289","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":""},"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":"2026-05-18T00:19:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ksNCJhzJbSUIOmhw9sd46uZw9DPCmMaW74M5pjHKk1HrD3R0KKzi4WS8zPKow5DptrmW+SbUUcKQzqLrx3ODg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T08:34:32.666491Z"},"content_sha256":"f35e69a1dc2224a6b7b5396cc008fd1ea9465c8e6b03084136624af0192ce8d6","schema_version":"1.0","event_id":"sha256:f35e69a1dc2224a6b7b5396cc008fd1ea9465c8e6b03084136624af0192ce8d6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WWKYLCSDPCRDES2SULVLRYBZEY/bundle.json","state_url":"https://pith.science/pith/WWKYLCSDPCRDES2SULVLRYBZEY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WWKYLCSDPCRDES2SULVLRYBZEY/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":"2026-06-09T08:34:32Z","links":{"resolver":"https://pith.science/pith/WWKYLCSDPCRDES2SULVLRYBZEY","bundle":"https://pith.science/pith/WWKYLCSDPCRDES2SULVLRYBZEY/bundle.json","state":"https://pith.science/pith/WWKYLCSDPCRDES2SULVLRYBZEY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WWKYLCSDPCRDES2SULVLRYBZEY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:WWKYLCSDPCRDES2SULVLRYBZEY","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":"bc452638a8f8455228cb3be21d2bb85d9f028133f289efe1b663efe1bf5ca845","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-03-29T23:57:07Z","title_canon_sha256":"0f6c6d5312770ac6feabf40ffe7a0ab5c998a1e06f4762c9497509266f953603"},"schema_version":"1.0","source":{"id":"1803.11289","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.11289","created_at":"2026-05-18T00:19:46Z"},{"alias_kind":"arxiv_version","alias_value":"1803.11289v1","created_at":"2026-05-18T00:19:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.11289","created_at":"2026-05-18T00:19:46Z"},{"alias_kind":"pith_short_12","alias_value":"WWKYLCSDPCRD","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"WWKYLCSDPCRDES2S","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"WWKYLCSD","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:f35e69a1dc2224a6b7b5396cc008fd1ea9465c8e6b03084136624af0192ce8d6","target":"graph","created_at":"2026-05-18T00:19:46Z","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":"Fluorescence molecular tomography (FMT) has potential of providing high contrast images for breast tumor detection. Computational phantom provides a convenient way to a wide variety of fluorophore distribution configurations in patients and perform comprehensive evaluation of the imaging systems and methods for FMT. In this study, a digital breast phantom was used to compare the performance of a novel sparsity-based reconstruction method and Tikhonov regularization method for resolving tumors with different amount of separation. The results showed that the proposed sparse reconstruction method","authors_text":"Abhinav K. Jha, Arman Rahmim, Yansong Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-03-29T23:57:07Z","title":"Application of computational breast phantoms to evaluate reconstruction methods for fluorescence molecular tomography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.11289","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":"sha256:2a9b1c9aa49af95c954716698b7f64888ed7cbf2575d60215caab814958b8add","target":"record","created_at":"2026-05-18T00:19:46Z","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":"bc452638a8f8455228cb3be21d2bb85d9f028133f289efe1b663efe1bf5ca845","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-03-29T23:57:07Z","title_canon_sha256":"0f6c6d5312770ac6feabf40ffe7a0ab5c998a1e06f4762c9497509266f953603"},"schema_version":"1.0","source":{"id":"1803.11289","kind":"arxiv","version":1}},"canonical_sha256":"b595858a4378a2324b52a2eab8e039260d156af974d4a785a39923c2132e49c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b595858a4378a2324b52a2eab8e039260d156af974d4a785a39923c2132e49c2","first_computed_at":"2026-05-18T00:19:46.449013Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:19:46.449013Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yb2wHIRCsiP1Fe+GmsIwk73iIVoOjCAuK7kgvrMLUYyQzYAYGQY5Wmf0IcsqHIQk/beO3FYyG++O0uSyWK0+CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:19:46.449962Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.11289","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2a9b1c9aa49af95c954716698b7f64888ed7cbf2575d60215caab814958b8add","sha256:f35e69a1dc2224a6b7b5396cc008fd1ea9465c8e6b03084136624af0192ce8d6"],"state_sha256":"3400809328f00c685cbf592a381ff4218396b3deff3d9c3f4663f5c7093e8e79"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3I5jRyqukcCU5ALLWQv7Dwvf92GECe3Hl+5X3wjkB3YjhuttME4kBPkm65C5nbLaDTgJv3uCnJ/jRnQF+gfdBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T08:34:32.670266Z","bundle_sha256":"c612ffecedd8aa4a923fdd4d20b54efbcd63b71784e3cfe9aee3bb1ee379fba8"}}