{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:4Y4FOBJF2WTS6G6JBRS2A2TWZI","short_pith_number":"pith:4Y4FOBJF","canonical_record":{"source":{"id":"2605.29195","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T00:10:48Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"7efdb281164f8f2aae22d535b9d70b2707d314c5b7a1102de7fc5305071f9761","abstract_canon_sha256":"35a0f5f9b5490f1f7a1a12a1880d021759b4506b5b471f994a299295bd663f52"},"schema_version":"1.0"},"canonical_sha256":"e638570525d5a72f1bc90c65a06a76ca3207aac92f3411ad55adc6fe64f0e123","source":{"kind":"arxiv","id":"2605.29195","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.29195","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"arxiv_version","alias_value":"2605.29195v1","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.29195","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_12","alias_value":"4Y4FOBJF2WTS","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_16","alias_value":"4Y4FOBJF2WTS6G6J","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_8","alias_value":"4Y4FOBJF","created_at":"2026-05-29T01:05:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:4Y4FOBJF2WTS6G6JBRS2A2TWZI","target":"record","payload":{"canonical_record":{"source":{"id":"2605.29195","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T00:10:48Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"7efdb281164f8f2aae22d535b9d70b2707d314c5b7a1102de7fc5305071f9761","abstract_canon_sha256":"35a0f5f9b5490f1f7a1a12a1880d021759b4506b5b471f994a299295bd663f52"},"schema_version":"1.0"},"canonical_sha256":"e638570525d5a72f1bc90c65a06a76ca3207aac92f3411ad55adc6fe64f0e123","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-29T01:05:23.705803Z","signature_b64":"KlnDOk2XnnyWdeObmR+4Yky4sWAIW/UmiYr/kQB0YrFJjl8UjdYp1g8D7uZC/PZOwXCRE553hkZ7HPQv0OeaDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e638570525d5a72f1bc90c65a06a76ca3207aac92f3411ad55adc6fe64f0e123","last_reissued_at":"2026-05-29T01:05:23.704978Z","signature_status":"signed_v1","first_computed_at":"2026-05-29T01:05:23.704978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.29195","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":"2026-05-29T01:05:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q2+Z3rywbRCBykJwQVRTJO+LIo19A4R8x6a7MKZ5tO9lNPfp0POAl0PhlBIDupzaGmihXBRlOvFwx905n+9JBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T11:52:35.479187Z"},"content_sha256":"da0dc3c2330c5cde616047db72b7630025bbeb51920fb468adcea6e32e256390","schema_version":"1.0","event_id":"sha256:da0dc3c2330c5cde616047db72b7630025bbeb51920fb468adcea6e32e256390"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:4Y4FOBJF2WTS6G6JBRS2A2TWZI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-Kernel TOF-PET Image Reconstruction Using ADMM","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.med-ph","authors_text":"Francis Loignon-Houle, Fumio Hashimoto, Kibo Ote, Maxime Toussaint, Ryosuke Ota, Yuya Onishi","submitted_at":"2026-05-28T00:10:48Z","abstract_excerpt":"Time-of-flight positron emission tomography (TOF-PET) detectors exhibiting multiple coincidence time resolution (CTR) components, such as those induced by the mixing of Cherenkov and scintillation photons, have attracted increasing attention. However, to fully exploit the latent potential of multi-kernel TOF-PET, new iterative image reconstruction methods are required. In this study, assuming that the events are labeled with the appropriate kernels, we propose an alternating direction method of multipliers (ADMM) for multi-kernel TOF-PET reconstruction, termed TOF-decomp ADMM. As the convergen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.29195","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.29195/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":"2026-05-29T01:05:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ieMtfQoleGNhZVkI9lLPwLIP+jYA8eO90xdJmLe/QDQmhfrPJLXyOnPrUiw/bofuZrmItLbtQ7OL5UWiAZD8Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T11:52:35.479586Z"},"content_sha256":"d9ea9bc31ad4e8d4efdb9cd677e3fb95abf4b2b4fd525e13ca3567a24dc3a950","schema_version":"1.0","event_id":"sha256:d9ea9bc31ad4e8d4efdb9cd677e3fb95abf4b2b4fd525e13ca3567a24dc3a950"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4Y4FOBJF2WTS6G6JBRS2A2TWZI/bundle.json","state_url":"https://pith.science/pith/4Y4FOBJF2WTS6G6JBRS2A2TWZI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4Y4FOBJF2WTS6G6JBRS2A2TWZI/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":"2026-07-03T11:52:35Z","links":{"resolver":"https://pith.science/pith/4Y4FOBJF2WTS6G6JBRS2A2TWZI","bundle":"https://pith.science/pith/4Y4FOBJF2WTS6G6JBRS2A2TWZI/bundle.json","state":"https://pith.science/pith/4Y4FOBJF2WTS6G6JBRS2A2TWZI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4Y4FOBJF2WTS6G6JBRS2A2TWZI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:4Y4FOBJF2WTS6G6JBRS2A2TWZI","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":"35a0f5f9b5490f1f7a1a12a1880d021759b4506b5b471f994a299295bd663f52","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T00:10:48Z","title_canon_sha256":"7efdb281164f8f2aae22d535b9d70b2707d314c5b7a1102de7fc5305071f9761"},"schema_version":"1.0","source":{"id":"2605.29195","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.29195","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"arxiv_version","alias_value":"2605.29195v1","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.29195","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_12","alias_value":"4Y4FOBJF2WTS","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_16","alias_value":"4Y4FOBJF2WTS6G6J","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_8","alias_value":"4Y4FOBJF","created_at":"2026-05-29T01:05:23Z"}],"graph_snapshots":[{"event_id":"sha256:d9ea9bc31ad4e8d4efdb9cd677e3fb95abf4b2b4fd525e13ca3567a24dc3a950","target":"graph","created_at":"2026-05-29T01:05:23Z","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/2605.29195/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Time-of-flight positron emission tomography (TOF-PET) detectors exhibiting multiple coincidence time resolution (CTR) components, such as those induced by the mixing of Cherenkov and scintillation photons, have attracted increasing attention. However, to fully exploit the latent potential of multi-kernel TOF-PET, new iterative image reconstruction methods are required. In this study, assuming that the events are labeled with the appropriate kernels, we propose an alternating direction method of multipliers (ADMM) for multi-kernel TOF-PET reconstruction, termed TOF-decomp ADMM. As the convergen","authors_text":"Francis Loignon-Houle, Fumio Hashimoto, Kibo Ote, Maxime Toussaint, Ryosuke Ota, Yuya Onishi","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T00:10:48Z","title":"Multi-Kernel TOF-PET Image Reconstruction Using ADMM"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.29195","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:da0dc3c2330c5cde616047db72b7630025bbeb51920fb468adcea6e32e256390","target":"record","created_at":"2026-05-29T01:05:23Z","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":"35a0f5f9b5490f1f7a1a12a1880d021759b4506b5b471f994a299295bd663f52","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T00:10:48Z","title_canon_sha256":"7efdb281164f8f2aae22d535b9d70b2707d314c5b7a1102de7fc5305071f9761"},"schema_version":"1.0","source":{"id":"2605.29195","kind":"arxiv","version":1}},"canonical_sha256":"e638570525d5a72f1bc90c65a06a76ca3207aac92f3411ad55adc6fe64f0e123","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e638570525d5a72f1bc90c65a06a76ca3207aac92f3411ad55adc6fe64f0e123","first_computed_at":"2026-05-29T01:05:23.704978Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-29T01:05:23.704978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KlnDOk2XnnyWdeObmR+4Yky4sWAIW/UmiYr/kQB0YrFJjl8UjdYp1g8D7uZC/PZOwXCRE553hkZ7HPQv0OeaDw==","signature_status":"signed_v1","signed_at":"2026-05-29T01:05:23.705803Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.29195","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da0dc3c2330c5cde616047db72b7630025bbeb51920fb468adcea6e32e256390","sha256:d9ea9bc31ad4e8d4efdb9cd677e3fb95abf4b2b4fd525e13ca3567a24dc3a950"],"state_sha256":"c8f0f78c929dc8cc281591acd7e3773aae6bf20c935e419796d5d5663136abf9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hLAR0fTkS9ldgHZ78w1D5EvQji1lxUFAJSZ3nVNn0PKmuJm0djOP94X3CuhK4yzAchBvjIhHK9yE2GSBkKJMCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T11:52:35.481547Z","bundle_sha256":"a2c7a90bb4129c42fd7f3f7c0cfe98134c09c1428e0b321258bf58429655542f"}}