{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:E3MT3LVKEOBBEZVMNWY7CXOUEG","short_pith_number":"pith:E3MT3LVK","canonical_record":{"source":{"id":"2304.13385","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-04-26T08:52:29Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"cbed2520df7414fe20cb665e29e53f154ab42c979b7bac8add75d0b8d346e2d5","abstract_canon_sha256":"e4c128d557e51b19d38bc995ce2c774f17067a9517cbbc3793665af75a9a7af4"},"schema_version":"1.0"},"canonical_sha256":"26d93daeaa23821266ac6db1f15dd4218f87a75d28234b9b2b8dd53e1411c583","source":{"kind":"arxiv","id":"2304.13385","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.13385","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"arxiv_version","alias_value":"2304.13385v1","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.13385","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"pith_short_12","alias_value":"E3MT3LVKEOBB","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"pith_short_16","alias_value":"E3MT3LVKEOBBEZVM","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"pith_short_8","alias_value":"E3MT3LVK","created_at":"2026-07-05T06:04:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:E3MT3LVKEOBBEZVMNWY7CXOUEG","target":"record","payload":{"canonical_record":{"source":{"id":"2304.13385","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-04-26T08:52:29Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"cbed2520df7414fe20cb665e29e53f154ab42c979b7bac8add75d0b8d346e2d5","abstract_canon_sha256":"e4c128d557e51b19d38bc995ce2c774f17067a9517cbbc3793665af75a9a7af4"},"schema_version":"1.0"},"canonical_sha256":"26d93daeaa23821266ac6db1f15dd4218f87a75d28234b9b2b8dd53e1411c583","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:04:43.561089Z","signature_b64":"bG8QZxuxfd1J4ffGjRV/Jndh7vvvceEx+hMAH1m86US94SUFsWzo/u3rg2eUjZOVjX4xVG4etQV1qRFkpdsHAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"26d93daeaa23821266ac6db1f15dd4218f87a75d28234b9b2b8dd53e1411c583","last_reissued_at":"2026-07-05T06:04:43.560551Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:04:43.560551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2304.13385","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":"2026-07-05T06:04:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VTmNXIX/Djt4Qtuyjng7kELKEDwDp6bcBghldRckf3cE6y2rLWSn9IhwR1AYi+SeSHntHIKNw1TlR6wfPn7/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:48:33.327535Z"},"content_sha256":"62f93bc8e5d0b8dee2fb2a7d42b735c6fb931ec03aa0cd31d5e525717647bba0","schema_version":"1.0","event_id":"sha256:62f93bc8e5d0b8dee2fb2a7d42b735c6fb931ec03aa0cd31d5e525717647bba0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:E3MT3LVKEOBBEZVMNWY7CXOUEG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low-field magnetic resonance image enhancement via stochastic image quality transfer","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Biobele J. Brown, Daniel C. Alexander, David W. Carmichael, Delmiro Fernandez-Reyes, Felice D'Arco, Godwin Ogbole, Hongxiang Lin, Ikeoluwa Lagunju, Judith Helen Cross, Lisa Ronan, Matteo Figini, Ryutaro Tanno, Stefano B. Blumberg","submitted_at":"2023-04-26T08:52:29Z","abstract_excerpt":"Low-field (<1T) magnetic resonance imaging (MRI) scanners remain in widespread use in low- and middle-income countries (LMICs) and are commonly used for some applications in higher income countries e.g. for small child patients with obesity, claustrophobia, implants, or tattoos. However, low-field MR images commonly have lower resolution and poorer contrast than images from high field (1.5T, 3T, and above). Here, we present Image Quality Transfer (IQT) to enhance low-field structural MRI by estimating from a low-field image the image we would have obtained from the same subject at high field. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.13385","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/2304.13385/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":"2026-07-05T06:04:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KbkKug9GfEEFuPIZxkDgzXWcB1KO1sYAG0MAE7fVdvtUE+dfxUHUVdSKxWcYrpPXrE5/4HMf4a7GDdqT0rzlCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:48:33.327923Z"},"content_sha256":"a5f996724636e0efb91b053c8b1b244f7495caaa3fd200484dc4041e51cd1c53","schema_version":"1.0","event_id":"sha256:a5f996724636e0efb91b053c8b1b244f7495caaa3fd200484dc4041e51cd1c53"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E3MT3LVKEOBBEZVMNWY7CXOUEG/bundle.json","state_url":"https://pith.science/pith/E3MT3LVKEOBBEZVMNWY7CXOUEG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E3MT3LVKEOBBEZVMNWY7CXOUEG/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":"2026-07-07T10:48:33Z","links":{"resolver":"https://pith.science/pith/E3MT3LVKEOBBEZVMNWY7CXOUEG","bundle":"https://pith.science/pith/E3MT3LVKEOBBEZVMNWY7CXOUEG/bundle.json","state":"https://pith.science/pith/E3MT3LVKEOBBEZVMNWY7CXOUEG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E3MT3LVKEOBBEZVMNWY7CXOUEG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:E3MT3LVKEOBBEZVMNWY7CXOUEG","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":"e4c128d557e51b19d38bc995ce2c774f17067a9517cbbc3793665af75a9a7af4","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-04-26T08:52:29Z","title_canon_sha256":"cbed2520df7414fe20cb665e29e53f154ab42c979b7bac8add75d0b8d346e2d5"},"schema_version":"1.0","source":{"id":"2304.13385","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.13385","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"arxiv_version","alias_value":"2304.13385v1","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.13385","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"pith_short_12","alias_value":"E3MT3LVKEOBB","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"pith_short_16","alias_value":"E3MT3LVKEOBBEZVM","created_at":"2026-07-05T06:04:43Z"},{"alias_kind":"pith_short_8","alias_value":"E3MT3LVK","created_at":"2026-07-05T06:04:43Z"}],"graph_snapshots":[{"event_id":"sha256:a5f996724636e0efb91b053c8b1b244f7495caaa3fd200484dc4041e51cd1c53","target":"graph","created_at":"2026-07-05T06:04:43Z","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/2304.13385/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Low-field (<1T) magnetic resonance imaging (MRI) scanners remain in widespread use in low- and middle-income countries (LMICs) and are commonly used for some applications in higher income countries e.g. for small child patients with obesity, claustrophobia, implants, or tattoos. However, low-field MR images commonly have lower resolution and poorer contrast than images from high field (1.5T, 3T, and above). Here, we present Image Quality Transfer (IQT) to enhance low-field structural MRI by estimating from a low-field image the image we would have obtained from the same subject at high field. ","authors_text":"Biobele J. Brown, Daniel C. Alexander, David W. Carmichael, Delmiro Fernandez-Reyes, Felice D'Arco, Godwin Ogbole, Hongxiang Lin, Ikeoluwa Lagunju, Judith Helen Cross, Lisa Ronan, Matteo Figini, Ryutaro Tanno, Stefano B. Blumberg","cross_cats":["cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-04-26T08:52:29Z","title":"Low-field magnetic resonance image enhancement via stochastic image quality transfer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.13385","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":"sha256:62f93bc8e5d0b8dee2fb2a7d42b735c6fb931ec03aa0cd31d5e525717647bba0","target":"record","created_at":"2026-07-05T06:04:43Z","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":"e4c128d557e51b19d38bc995ce2c774f17067a9517cbbc3793665af75a9a7af4","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2023-04-26T08:52:29Z","title_canon_sha256":"cbed2520df7414fe20cb665e29e53f154ab42c979b7bac8add75d0b8d346e2d5"},"schema_version":"1.0","source":{"id":"2304.13385","kind":"arxiv","version":1}},"canonical_sha256":"26d93daeaa23821266ac6db1f15dd4218f87a75d28234b9b2b8dd53e1411c583","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"26d93daeaa23821266ac6db1f15dd4218f87a75d28234b9b2b8dd53e1411c583","first_computed_at":"2026-07-05T06:04:43.560551Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:04:43.560551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bG8QZxuxfd1J4ffGjRV/Jndh7vvvceEx+hMAH1m86US94SUFsWzo/u3rg2eUjZOVjX4xVG4etQV1qRFkpdsHAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:04:43.561089Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.13385","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:62f93bc8e5d0b8dee2fb2a7d42b735c6fb931ec03aa0cd31d5e525717647bba0","sha256:a5f996724636e0efb91b053c8b1b244f7495caaa3fd200484dc4041e51cd1c53"],"state_sha256":"f88a611e055c6384bd9c9706b883673ee042a327522da7470494d936a5ddaeba"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TQClUhjdDXxKvuR2j/AIZKoLZVWfD2f+ySdIuC16/z6KMAZqijDE/HItfYV0nPOLCnKUnxbSLrUq8caVn0XYDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:48:33.330239Z","bundle_sha256":"64ca0e6a8f606d398ac89251fe96244f8a825773fb69b6e8e306ad885b048bdf"}}