{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:PAJU2B4OGBZ4GKHY2DPBSWKRIE","short_pith_number":"pith:PAJU2B4O","canonical_record":{"source":{"id":"1811.08305","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-19T14:35:28Z","cross_cats_sorted":[],"title_canon_sha256":"c9f1beba514427e9bef69c08bdd3286df4ebe7ea003bbcc8fe2d8725cad31e6c","abstract_canon_sha256":"22cd71088624cc2f1658e117a8858ce35cd8d829e4c6f460e4e9a23aee96d716"},"schema_version":"1.0"},"canonical_sha256":"78134d078e3073c328f8d0de19595141220b09512ac0328138556cb787b177e6","source":{"kind":"arxiv","id":"1811.08305","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.08305","created_at":"2026-05-18T00:00:14Z"},{"alias_kind":"arxiv_version","alias_value":"1811.08305v1","created_at":"2026-05-18T00:00:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.08305","created_at":"2026-05-18T00:00:14Z"},{"alias_kind":"pith_short_12","alias_value":"PAJU2B4OGBZ4","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"PAJU2B4OGBZ4GKHY","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"PAJU2B4O","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:PAJU2B4OGBZ4GKHY2DPBSWKRIE","target":"record","payload":{"canonical_record":{"source":{"id":"1811.08305","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-19T14:35:28Z","cross_cats_sorted":[],"title_canon_sha256":"c9f1beba514427e9bef69c08bdd3286df4ebe7ea003bbcc8fe2d8725cad31e6c","abstract_canon_sha256":"22cd71088624cc2f1658e117a8858ce35cd8d829e4c6f460e4e9a23aee96d716"},"schema_version":"1.0"},"canonical_sha256":"78134d078e3073c328f8d0de19595141220b09512ac0328138556cb787b177e6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:14.398958Z","signature_b64":"AqSxMAO0N6GSsJONxod95ZOcWcj+NXZOBS9SuDKqWsraq50XzNYlFo0vVCLebxlR3NNahFmytmctC0Rqc8qqBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"78134d078e3073c328f8d0de19595141220b09512ac0328138556cb787b177e6","last_reissued_at":"2026-05-18T00:00:14.398366Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:14.398366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.08305","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":"2026-05-18T00:00:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VR8u6eC35KCBnxiNHWuzzxX1xqtQibBgpV/bIZ9rqDpIWA1uAYV6ARXzGcVJ0SiR9xpL9GCI1Bi/nKmIZ6iwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:55:12.566178Z"},"content_sha256":"3ed520d96d71801203d8dfa08bfc43f61106736f03924dc869434fa35c1ffc12","schema_version":"1.0","event_id":"sha256:3ed520d96d71801203d8dfa08bfc43f61106736f03924dc869434fa35c1ffc12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:PAJU2B4OGBZ4GKHY2DPBSWKRIE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"IVD-Net: Intervertebral disc localization and segmentation in MRI with a multi-modal UNet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Christian Desrosiers, Ismail Ben Ayed, Jose Dolz","submitted_at":"2018-11-19T14:35:28Z","abstract_excerpt":"Accurate localization and segmentation of intervertebral disc (IVD) is crucial for the assessment of spine disease diagnosis. Despite the technological advances in medical imaging, IVD localization and segmentation are still manually performed, which is time-consuming and prone to errors. If, in addition, multi-modal imaging is considered, the burden imposed on disease assessments increases substantially. In this paper, we propose an architecture for IVD localization and segmentation in multi-modal MRI, which extends the well-known UNet. Compared to single images, multi-modal data brings compl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08305","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":"2026-05-18T00:00:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+OMNw2VacxarScFZ5rao9YQEW9PCZFCpkJR5hmSiF3VE1p+yNTB1lg9EfQ+T3hQLx3vaYJnTEPJ718YpRv4DCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:55:12.566546Z"},"content_sha256":"39b505e48b2caa12a739fa6ca1a66ffa834b106ec59202d26b303fada305a7b2","schema_version":"1.0","event_id":"sha256:39b505e48b2caa12a739fa6ca1a66ffa834b106ec59202d26b303fada305a7b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PAJU2B4OGBZ4GKHY2DPBSWKRIE/bundle.json","state_url":"https://pith.science/pith/PAJU2B4OGBZ4GKHY2DPBSWKRIE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PAJU2B4OGBZ4GKHY2DPBSWKRIE/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":"2026-06-05T12:55:12Z","links":{"resolver":"https://pith.science/pith/PAJU2B4OGBZ4GKHY2DPBSWKRIE","bundle":"https://pith.science/pith/PAJU2B4OGBZ4GKHY2DPBSWKRIE/bundle.json","state":"https://pith.science/pith/PAJU2B4OGBZ4GKHY2DPBSWKRIE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PAJU2B4OGBZ4GKHY2DPBSWKRIE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:PAJU2B4OGBZ4GKHY2DPBSWKRIE","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":"22cd71088624cc2f1658e117a8858ce35cd8d829e4c6f460e4e9a23aee96d716","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-19T14:35:28Z","title_canon_sha256":"c9f1beba514427e9bef69c08bdd3286df4ebe7ea003bbcc8fe2d8725cad31e6c"},"schema_version":"1.0","source":{"id":"1811.08305","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.08305","created_at":"2026-05-18T00:00:14Z"},{"alias_kind":"arxiv_version","alias_value":"1811.08305v1","created_at":"2026-05-18T00:00:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.08305","created_at":"2026-05-18T00:00:14Z"},{"alias_kind":"pith_short_12","alias_value":"PAJU2B4OGBZ4","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"PAJU2B4OGBZ4GKHY","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"PAJU2B4O","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:39b505e48b2caa12a739fa6ca1a66ffa834b106ec59202d26b303fada305a7b2","target":"graph","created_at":"2026-05-18T00:00:14Z","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":"Accurate localization and segmentation of intervertebral disc (IVD) is crucial for the assessment of spine disease diagnosis. Despite the technological advances in medical imaging, IVD localization and segmentation are still manually performed, which is time-consuming and prone to errors. If, in addition, multi-modal imaging is considered, the burden imposed on disease assessments increases substantially. In this paper, we propose an architecture for IVD localization and segmentation in multi-modal MRI, which extends the well-known UNet. Compared to single images, multi-modal data brings compl","authors_text":"Christian Desrosiers, Ismail Ben Ayed, Jose Dolz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-19T14:35:28Z","title":"IVD-Net: Intervertebral disc localization and segmentation in MRI with a multi-modal UNet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08305","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":"sha256:3ed520d96d71801203d8dfa08bfc43f61106736f03924dc869434fa35c1ffc12","target":"record","created_at":"2026-05-18T00:00:14Z","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":"22cd71088624cc2f1658e117a8858ce35cd8d829e4c6f460e4e9a23aee96d716","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-19T14:35:28Z","title_canon_sha256":"c9f1beba514427e9bef69c08bdd3286df4ebe7ea003bbcc8fe2d8725cad31e6c"},"schema_version":"1.0","source":{"id":"1811.08305","kind":"arxiv","version":1}},"canonical_sha256":"78134d078e3073c328f8d0de19595141220b09512ac0328138556cb787b177e6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78134d078e3073c328f8d0de19595141220b09512ac0328138556cb787b177e6","first_computed_at":"2026-05-18T00:00:14.398366Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:14.398366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AqSxMAO0N6GSsJONxod95ZOcWcj+NXZOBS9SuDKqWsraq50XzNYlFo0vVCLebxlR3NNahFmytmctC0Rqc8qqBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:14.398958Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.08305","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ed520d96d71801203d8dfa08bfc43f61106736f03924dc869434fa35c1ffc12","sha256:39b505e48b2caa12a739fa6ca1a66ffa834b106ec59202d26b303fada305a7b2"],"state_sha256":"1c28170dd0fd14c133760991cca351aaec2e8f013090946d962f259a35029254"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wsAdVnTrnj6Yx0+0AwKHvAvp5TVp8IDM3dJis9GrVw24xifA31rjNlJxHdGMSlXFm2j0jmKO3fCGamxN/9rDCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T12:55:12.568699Z","bundle_sha256":"1b65e2adf7134928adab8626110d23382bf2d6671b59bbb5292d31c5173604f4"}}