{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:D32DRTVXU7ALVQOWVYOBJXYJO3","short_pith_number":"pith:D32DRTVX","canonical_record":{"source":{"id":"1802.08909","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-02-24T20:43:23Z","cross_cats_sorted":[],"title_canon_sha256":"1669e96307ec3112df538f34277a2890e84696fb5d72194084b2dd98abc91cf5","abstract_canon_sha256":"84f61c5f37ecd7b8c50928deee17915e72194879df6703fb2f5b81cc02582701"},"schema_version":"1.0"},"canonical_sha256":"1ef438ceb7a7c0bac1d6ae1c14df0976ee4549e3e0e579dff63a30e72cb25b4f","source":{"kind":"arxiv","id":"1802.08909","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.08909","created_at":"2026-05-18T00:22:36Z"},{"alias_kind":"arxiv_version","alias_value":"1802.08909v1","created_at":"2026-05-18T00:22:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.08909","created_at":"2026-05-18T00:22:36Z"},{"alias_kind":"pith_short_12","alias_value":"D32DRTVXU7AL","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"D32DRTVXU7ALVQOW","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"D32DRTVX","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:D32DRTVXU7ALVQOWVYOBJXYJO3","target":"record","payload":{"canonical_record":{"source":{"id":"1802.08909","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-02-24T20:43:23Z","cross_cats_sorted":[],"title_canon_sha256":"1669e96307ec3112df538f34277a2890e84696fb5d72194084b2dd98abc91cf5","abstract_canon_sha256":"84f61c5f37ecd7b8c50928deee17915e72194879df6703fb2f5b81cc02582701"},"schema_version":"1.0"},"canonical_sha256":"1ef438ceb7a7c0bac1d6ae1c14df0976ee4549e3e0e579dff63a30e72cb25b4f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:22:36.068501Z","signature_b64":"pM7OZvVLusujYeDixqhOlWVoYNdhelWMdk9u1eocAfNS3AYv+mcam0CxTx+2hPfiTaSNOWto2uXRFzS3q953Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ef438ceb7a7c0bac1d6ae1c14df0976ee4549e3e0e579dff63a30e72cb25b4f","last_reissued_at":"2026-05-18T00:22:36.067882Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:22:36.067882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.08909","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":"2026-05-18T00:22:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eXlVqISy7mb2v+FFPA0l6p2d/6D/ga+mKWxol3J+MSbA2WH7qWfOoHzWNtZWNvuSAevIbOH/5D2B7Vb9v9RqDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:58:36.146457Z"},"content_sha256":"b9fec18ffd7bfbb7d99a3e1d2b90ee906a084995c0962866501a69bf4757413d","schema_version":"1.0","event_id":"sha256:b9fec18ffd7bfbb7d99a3e1d2b90ee906a084995c0962866501a69bf4757413d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:D32DRTVXU7ALVQOWVYOBJXYJO3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Free-breathing cardiac MRI using bandlimited manifold modelling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Bijoy Thattaliyath, Deidra Ansah, Mathews Jacob, Ravi Ashwath, Sunrita Poddar, Yasir Mohsin","submitted_at":"2018-02-24T20:43:23Z","abstract_excerpt":"We introduce a novel bandlimited manifold framework and an algorithm to recover freebreathing and ungated cardiac MR images from highly undersampled measurements. The image frames in the free breathing and ungated dataset are assumed to be points on a bandlimited manifold. We introduce a novel kernel low-rank algorithm to estimate the manifold structure (Laplacian) from a navigator-based acquisition scheme. The structure of the manifold is then used to recover the images from highly undersampled measurements. A computationally efficient algorithm, which relies on the bandlimited approximation "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.08909","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":"2026-05-18T00:22:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"muiXmBtRS4K+1KnWkpuVNQpovsKhcgcs/DK8qojF3DSsrdEhnTRFr5Gsh1RLyJEkE/plaTWfruPPoeBLwVGMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:58:36.146800Z"},"content_sha256":"e5c9abce99b7b21fde52cbb62499b988d38f4a3b249368d1b7dd5755698c8878","schema_version":"1.0","event_id":"sha256:e5c9abce99b7b21fde52cbb62499b988d38f4a3b249368d1b7dd5755698c8878"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D32DRTVXU7ALVQOWVYOBJXYJO3/bundle.json","state_url":"https://pith.science/pith/D32DRTVXU7ALVQOWVYOBJXYJO3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D32DRTVXU7ALVQOWVYOBJXYJO3/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":"2026-06-02T21:58:36Z","links":{"resolver":"https://pith.science/pith/D32DRTVXU7ALVQOWVYOBJXYJO3","bundle":"https://pith.science/pith/D32DRTVXU7ALVQOWVYOBJXYJO3/bundle.json","state":"https://pith.science/pith/D32DRTVXU7ALVQOWVYOBJXYJO3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D32DRTVXU7ALVQOWVYOBJXYJO3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:D32DRTVXU7ALVQOWVYOBJXYJO3","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":"84f61c5f37ecd7b8c50928deee17915e72194879df6703fb2f5b81cc02582701","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-02-24T20:43:23Z","title_canon_sha256":"1669e96307ec3112df538f34277a2890e84696fb5d72194084b2dd98abc91cf5"},"schema_version":"1.0","source":{"id":"1802.08909","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.08909","created_at":"2026-05-18T00:22:36Z"},{"alias_kind":"arxiv_version","alias_value":"1802.08909v1","created_at":"2026-05-18T00:22:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.08909","created_at":"2026-05-18T00:22:36Z"},{"alias_kind":"pith_short_12","alias_value":"D32DRTVXU7AL","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"D32DRTVXU7ALVQOW","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"D32DRTVX","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:e5c9abce99b7b21fde52cbb62499b988d38f4a3b249368d1b7dd5755698c8878","target":"graph","created_at":"2026-05-18T00:22:36Z","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":"We introduce a novel bandlimited manifold framework and an algorithm to recover freebreathing and ungated cardiac MR images from highly undersampled measurements. The image frames in the free breathing and ungated dataset are assumed to be points on a bandlimited manifold. We introduce a novel kernel low-rank algorithm to estimate the manifold structure (Laplacian) from a navigator-based acquisition scheme. The structure of the manifold is then used to recover the images from highly undersampled measurements. A computationally efficient algorithm, which relies on the bandlimited approximation ","authors_text":"Bijoy Thattaliyath, Deidra Ansah, Mathews Jacob, Ravi Ashwath, Sunrita Poddar, Yasir Mohsin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-02-24T20:43:23Z","title":"Free-breathing cardiac MRI using bandlimited manifold modelling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.08909","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:b9fec18ffd7bfbb7d99a3e1d2b90ee906a084995c0962866501a69bf4757413d","target":"record","created_at":"2026-05-18T00:22:36Z","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":"84f61c5f37ecd7b8c50928deee17915e72194879df6703fb2f5b81cc02582701","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-02-24T20:43:23Z","title_canon_sha256":"1669e96307ec3112df538f34277a2890e84696fb5d72194084b2dd98abc91cf5"},"schema_version":"1.0","source":{"id":"1802.08909","kind":"arxiv","version":1}},"canonical_sha256":"1ef438ceb7a7c0bac1d6ae1c14df0976ee4549e3e0e579dff63a30e72cb25b4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ef438ceb7a7c0bac1d6ae1c14df0976ee4549e3e0e579dff63a30e72cb25b4f","first_computed_at":"2026-05-18T00:22:36.067882Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:22:36.067882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pM7OZvVLusujYeDixqhOlWVoYNdhelWMdk9u1eocAfNS3AYv+mcam0CxTx+2hPfiTaSNOWto2uXRFzS3q953Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:22:36.068501Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.08909","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9fec18ffd7bfbb7d99a3e1d2b90ee906a084995c0962866501a69bf4757413d","sha256:e5c9abce99b7b21fde52cbb62499b988d38f4a3b249368d1b7dd5755698c8878"],"state_sha256":"1b94255c6cceafb140f95c6446512597c42edb3c75a994f14593ae2b005097f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S/+IMjWah51OP0lVyXHNVKqzeWqZPwOO47lOl9PPNlfXMbIIRDQPfv4PnG2UXm+y+yF0bBkvPQ3pmwcR9xzdDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:58:36.148734Z","bundle_sha256":"e55d3e0a008ac23e864043ff1aa27ef5f3ee3eba708daab119be0041b4530c1d"}}