{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:OE7FY3PFBYKHQHBJLV2WV42QYC","short_pith_number":"pith:OE7FY3PF","canonical_record":{"source":{"id":"1809.02506","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2018-09-06T12:51:58Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"ccb01ae2bdebcd8803c909dc7ae394fcd966d60b70ab3d41262d7301cc98b63e","abstract_canon_sha256":"9992e18cb228ecca037cd74745cd99edcd8f1caba63002d8e2e3e80c91b15d94"},"schema_version":"1.0"},"canonical_sha256":"713e5c6de50e14781c295d756af350c095ad044965dd2d4fb0e2cf3d83307fe8","source":{"kind":"arxiv","id":"1809.02506","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.02506","created_at":"2026-05-18T00:06:16Z"},{"alias_kind":"arxiv_version","alias_value":"1809.02506v1","created_at":"2026-05-18T00:06:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.02506","created_at":"2026-05-18T00:06:16Z"},{"alias_kind":"pith_short_12","alias_value":"OE7FY3PFBYKH","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OE7FY3PFBYKHQHBJ","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OE7FY3PF","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:OE7FY3PFBYKHQHBJLV2WV42QYC","target":"record","payload":{"canonical_record":{"source":{"id":"1809.02506","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2018-09-06T12:51:58Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"ccb01ae2bdebcd8803c909dc7ae394fcd966d60b70ab3d41262d7301cc98b63e","abstract_canon_sha256":"9992e18cb228ecca037cd74745cd99edcd8f1caba63002d8e2e3e80c91b15d94"},"schema_version":"1.0"},"canonical_sha256":"713e5c6de50e14781c295d756af350c095ad044965dd2d4fb0e2cf3d83307fe8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:16.899513Z","signature_b64":"j12aQw27B+P6cPlvXK1Fb7/TxAxMpxC4LuSifqsfLZ0/spJWtK2vnO7NhFlFobxImJu6GVGYOI5/iPnwpbycAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"713e5c6de50e14781c295d756af350c095ad044965dd2d4fb0e2cf3d83307fe8","last_reissued_at":"2026-05-18T00:06:16.898892Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:16.898892Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.02506","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":"2026-05-18T00:06:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ocru+PXAfKxKlud/0vN85xE+2NCq1dC7hyaCElz7oIAXZPnWJQvMfRgEq2T4KiceUhZj8p8Fk5xle/9Xu5dvDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T17:27:13.658362Z"},"content_sha256":"6cbb1a13a5a64f058ba4c92b159c0644926b42e46d0e08b797bbe12964dbc41e","schema_version":"1.0","event_id":"sha256:6cbb1a13a5a64f058ba4c92b159c0644926b42e46d0e08b797bbe12964dbc41e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:OE7FY3PFBYKHQHBJLV2WV42QYC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Balanced multi-shot EPI for accelerated Cartesian MRF: An alternative to spiral MRF","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"q-bio.QM","authors_text":"Arnold Julian Vinoj Benjamin, Ian Marshall, Marion I. Menzel, Mike E. Davies, Mohammad Golbabaee, Pedro A. G\\'omez, Tim Sprenger","submitted_at":"2018-09-06T12:51:58Z","abstract_excerpt":"The main purpose of this study is to show that a highly accelerated Cartesian MRF scheme using a multi-shot EPI readout (i.e. multi-shot EPI-MRF) can produce good quality multi-parametric maps such as T1, T2 and proton density (PD) in a sufficiently short scan duration that is similar to conventional MRF. This multi-shot approach allows considerable subsampling while traversing the entire k-space trajectory, can yield better SNR, reduced blurring, less distortion and can also be used to collect higher resolution data compared to existing single-shot EPI-MRF implementations. The generated param"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.02506","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":"2026-05-18T00:06:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c82JAGDliOTLzSfjSh74/Ey/7YS88+azWK9IsLasr8Okm5uFiL2k2QQEYpg6vTjAdiCRAruMPaUC1u9V3qUiDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T17:27:13.658996Z"},"content_sha256":"9d53230ea6936f9ccad5220d8b93d825e88f6cbae3f951dd4a4ee9a2f809cb03","schema_version":"1.0","event_id":"sha256:9d53230ea6936f9ccad5220d8b93d825e88f6cbae3f951dd4a4ee9a2f809cb03"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OE7FY3PFBYKHQHBJLV2WV42QYC/bundle.json","state_url":"https://pith.science/pith/OE7FY3PFBYKHQHBJLV2WV42QYC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OE7FY3PFBYKHQHBJLV2WV42QYC/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":"2026-05-31T17:27:13Z","links":{"resolver":"https://pith.science/pith/OE7FY3PFBYKHQHBJLV2WV42QYC","bundle":"https://pith.science/pith/OE7FY3PFBYKHQHBJLV2WV42QYC/bundle.json","state":"https://pith.science/pith/OE7FY3PFBYKHQHBJLV2WV42QYC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OE7FY3PFBYKHQHBJLV2WV42QYC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:OE7FY3PFBYKHQHBJLV2WV42QYC","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":"9992e18cb228ecca037cd74745cd99edcd8f1caba63002d8e2e3e80c91b15d94","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2018-09-06T12:51:58Z","title_canon_sha256":"ccb01ae2bdebcd8803c909dc7ae394fcd966d60b70ab3d41262d7301cc98b63e"},"schema_version":"1.0","source":{"id":"1809.02506","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.02506","created_at":"2026-05-18T00:06:16Z"},{"alias_kind":"arxiv_version","alias_value":"1809.02506v1","created_at":"2026-05-18T00:06:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.02506","created_at":"2026-05-18T00:06:16Z"},{"alias_kind":"pith_short_12","alias_value":"OE7FY3PFBYKH","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OE7FY3PFBYKHQHBJ","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OE7FY3PF","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:9d53230ea6936f9ccad5220d8b93d825e88f6cbae3f951dd4a4ee9a2f809cb03","target":"graph","created_at":"2026-05-18T00:06:16Z","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":"The main purpose of this study is to show that a highly accelerated Cartesian MRF scheme using a multi-shot EPI readout (i.e. multi-shot EPI-MRF) can produce good quality multi-parametric maps such as T1, T2 and proton density (PD) in a sufficiently short scan duration that is similar to conventional MRF. This multi-shot approach allows considerable subsampling while traversing the entire k-space trajectory, can yield better SNR, reduced blurring, less distortion and can also be used to collect higher resolution data compared to existing single-shot EPI-MRF implementations. The generated param","authors_text":"Arnold Julian Vinoj Benjamin, Ian Marshall, Marion I. Menzel, Mike E. Davies, Mohammad Golbabaee, Pedro A. G\\'omez, Tim Sprenger","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2018-09-06T12:51:58Z","title":"Balanced multi-shot EPI for accelerated Cartesian MRF: An alternative to spiral MRF"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.02506","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":"sha256:6cbb1a13a5a64f058ba4c92b159c0644926b42e46d0e08b797bbe12964dbc41e","target":"record","created_at":"2026-05-18T00:06:16Z","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":"9992e18cb228ecca037cd74745cd99edcd8f1caba63002d8e2e3e80c91b15d94","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2018-09-06T12:51:58Z","title_canon_sha256":"ccb01ae2bdebcd8803c909dc7ae394fcd966d60b70ab3d41262d7301cc98b63e"},"schema_version":"1.0","source":{"id":"1809.02506","kind":"arxiv","version":1}},"canonical_sha256":"713e5c6de50e14781c295d756af350c095ad044965dd2d4fb0e2cf3d83307fe8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"713e5c6de50e14781c295d756af350c095ad044965dd2d4fb0e2cf3d83307fe8","first_computed_at":"2026-05-18T00:06:16.898892Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:16.898892Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j12aQw27B+P6cPlvXK1Fb7/TxAxMpxC4LuSifqsfLZ0/spJWtK2vnO7NhFlFobxImJu6GVGYOI5/iPnwpbycAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:16.899513Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.02506","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6cbb1a13a5a64f058ba4c92b159c0644926b42e46d0e08b797bbe12964dbc41e","sha256:9d53230ea6936f9ccad5220d8b93d825e88f6cbae3f951dd4a4ee9a2f809cb03"],"state_sha256":"076bf8c8fbb9ea78ca2733a55f544a33d6c244e88ef8fcd17770661841e1bbe8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9zrIjI78INFxXmb3+fKCdZNbiN5camaA7IjbdrazR/bMzSCYefMCrvBO3rPEGMI404UAwV7CPr21BcvIiVKtBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T17:27:13.662211Z","bundle_sha256":"9fbffee8a60f9e275982b03d96c93fbdd3927eaf681259fa9deafd3fb8f267c8"}}