{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:SB2QNZZ6QCGYHNJG2PCLEW4QXW","short_pith_number":"pith:SB2QNZZ6","canonical_record":{"source":{"id":"2212.10817","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"eess.IV","submitted_at":"2022-12-21T07:11:39Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"d22521a0bdab668f1555e71ecc8a29ecb3e36ff908a189ce718eb047cc4fe8d0","abstract_canon_sha256":"9af8e252b98e193e740d72175b43b3b3973f53308c692430e01e16583fb885b9"},"schema_version":"1.0"},"canonical_sha256":"907506e73e808d83b526d3c4b25b90bd8939d578f0341f24899b4be48c4f353e","source":{"kind":"arxiv","id":"2212.10817","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.10817","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"arxiv_version","alias_value":"2212.10817v1","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.10817","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"pith_short_12","alias_value":"SB2QNZZ6QCGY","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"SB2QNZZ6QCGYHNJG","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"SB2QNZZ6","created_at":"2026-07-05T05:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:SB2QNZZ6QCGYHNJG2PCLEW4QXW","target":"record","payload":{"canonical_record":{"source":{"id":"2212.10817","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"eess.IV","submitted_at":"2022-12-21T07:11:39Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"d22521a0bdab668f1555e71ecc8a29ecb3e36ff908a189ce718eb047cc4fe8d0","abstract_canon_sha256":"9af8e252b98e193e740d72175b43b3b3973f53308c692430e01e16583fb885b9"},"schema_version":"1.0"},"canonical_sha256":"907506e73e808d83b526d3c4b25b90bd8939d578f0341f24899b4be48c4f353e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:27:23.133272Z","signature_b64":"jsFXtfXM42TTAtEUca+/bj1fVjb/SODHH5hPnf3dVS1hZF7PsDUf8jjZFxOnQTV6nXRxFfN/dOYxNa5gdzgpDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"907506e73e808d83b526d3c4b25b90bd8939d578f0341f24899b4be48c4f353e","last_reissued_at":"2026-07-05T05:27:23.132869Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:27:23.132869Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2212.10817","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":"2026-07-05T05:27:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TM6A8nJud0/UdpQN1BFJS08fBKyVZzO0XNMdh/giQ53/3T9L8ZRcQ7y7kWbYAghmxy9B9SpIekIipV6L+mRZDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T08:02:27.774641Z"},"content_sha256":"ac1ea72aeda1df538eb1ddd99e7101fad1fda7460f07e0ecdb42979d7f6f82e9","schema_version":"1.0","event_id":"sha256:ac1ea72aeda1df538eb1ddd99e7101fad1fda7460f07e0ecdb42979d7f6f82e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:SB2QNZZ6QCGYHNJG2PCLEW4QXW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-fidelity Direct Contrast Synthesis from Magnetic Resonance Fingerprinting","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Ekin Karasan, Fei Tan, Jakob Meineke, Jonathan I. Tamir, Ke Wang, Mariya Doneva, Michael Lustig, Stella X. Yu, Thomas Amthor","submitted_at":"2022-12-21T07:11:39Z","abstract_excerpt":"Magnetic Resonance Fingerprinting (MRF) is an efficient quantitative MRI technique that can extract important tissue and system parameters such as T1, T2, B0, and B1 from a single scan. This property also makes it attractive for retrospectively synthesizing contrast-weighted images. In general, contrast-weighted images like T1-weighted, T2-weighted, etc., can be synthesized directly from parameter maps through spin-dynamics simulation (i.e., Bloch or Extended Phase Graph models). However, these approaches often exhibit artifacts due to imperfections in the mapping, the sequence modeling, and t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.10817","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/2212.10817/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":"2026-07-05T05:27:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IB1jKkx3+f8MvBDoUesSV4AHLchHn9PXfJsj4dU5rtAq4Io1DBDE4GeGHc5CZJrW0/XZQs+BjiZ2xKqBTEz4CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T08:02:27.775956Z"},"content_sha256":"cc1cc1f7360b65934eec72f8a2c214a014d29f03a5df4f584c8b64458e89087f","schema_version":"1.0","event_id":"sha256:cc1cc1f7360b65934eec72f8a2c214a014d29f03a5df4f584c8b64458e89087f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SB2QNZZ6QCGYHNJG2PCLEW4QXW/bundle.json","state_url":"https://pith.science/pith/SB2QNZZ6QCGYHNJG2PCLEW4QXW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SB2QNZZ6QCGYHNJG2PCLEW4QXW/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":"2026-08-05T08:02:27Z","links":{"resolver":"https://pith.science/pith/SB2QNZZ6QCGYHNJG2PCLEW4QXW","bundle":"https://pith.science/pith/SB2QNZZ6QCGYHNJG2PCLEW4QXW/bundle.json","state":"https://pith.science/pith/SB2QNZZ6QCGYHNJG2PCLEW4QXW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SB2QNZZ6QCGYHNJG2PCLEW4QXW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:SB2QNZZ6QCGYHNJG2PCLEW4QXW","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":"9af8e252b98e193e740d72175b43b3b3973f53308c692430e01e16583fb885b9","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"eess.IV","submitted_at":"2022-12-21T07:11:39Z","title_canon_sha256":"d22521a0bdab668f1555e71ecc8a29ecb3e36ff908a189ce718eb047cc4fe8d0"},"schema_version":"1.0","source":{"id":"2212.10817","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.10817","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"arxiv_version","alias_value":"2212.10817v1","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.10817","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"pith_short_12","alias_value":"SB2QNZZ6QCGY","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"SB2QNZZ6QCGYHNJG","created_at":"2026-07-05T05:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"SB2QNZZ6","created_at":"2026-07-05T05:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:cc1cc1f7360b65934eec72f8a2c214a014d29f03a5df4f584c8b64458e89087f","target":"graph","created_at":"2026-07-05T05:27:23Z","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/2212.10817/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetic Resonance Fingerprinting (MRF) is an efficient quantitative MRI technique that can extract important tissue and system parameters such as T1, T2, B0, and B1 from a single scan. This property also makes it attractive for retrospectively synthesizing contrast-weighted images. In general, contrast-weighted images like T1-weighted, T2-weighted, etc., can be synthesized directly from parameter maps through spin-dynamics simulation (i.e., Bloch or Extended Phase Graph models). However, these approaches often exhibit artifacts due to imperfections in the mapping, the sequence modeling, and t","authors_text":"Ekin Karasan, Fei Tan, Jakob Meineke, Jonathan I. Tamir, Ke Wang, Mariya Doneva, Michael Lustig, Stella X. Yu, Thomas Amthor","cross_cats":["cs.CV"],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"eess.IV","submitted_at":"2022-12-21T07:11:39Z","title":"High-fidelity Direct Contrast Synthesis from Magnetic Resonance Fingerprinting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.10817","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:ac1ea72aeda1df538eb1ddd99e7101fad1fda7460f07e0ecdb42979d7f6f82e9","target":"record","created_at":"2026-07-05T05:27:23Z","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":"9af8e252b98e193e740d72175b43b3b3973f53308c692430e01e16583fb885b9","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"eess.IV","submitted_at":"2022-12-21T07:11:39Z","title_canon_sha256":"d22521a0bdab668f1555e71ecc8a29ecb3e36ff908a189ce718eb047cc4fe8d0"},"schema_version":"1.0","source":{"id":"2212.10817","kind":"arxiv","version":1}},"canonical_sha256":"907506e73e808d83b526d3c4b25b90bd8939d578f0341f24899b4be48c4f353e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"907506e73e808d83b526d3c4b25b90bd8939d578f0341f24899b4be48c4f353e","first_computed_at":"2026-07-05T05:27:23.132869Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:27:23.132869Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jsFXtfXM42TTAtEUca+/bj1fVjb/SODHH5hPnf3dVS1hZF7PsDUf8jjZFxOnQTV6nXRxFfN/dOYxNa5gdzgpDg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:27:23.133272Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.10817","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac1ea72aeda1df538eb1ddd99e7101fad1fda7460f07e0ecdb42979d7f6f82e9","sha256:cc1cc1f7360b65934eec72f8a2c214a014d29f03a5df4f584c8b64458e89087f"],"state_sha256":"0a1a71ebeba2960fb2de9ac8594a198a879dad8f6573d3de898dbb598c201438"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OrCKilqIO3xLpBlql0C1wmoGzEcJcAhpsfLV8cmi/xOfFh8QZ/VSTUbKDiinYG4phMy9eiNPkXhzg300MzELAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T08:02:27.783293Z","bundle_sha256":"7f9a4a30be9b0666241052ac9a9f34eec13c5dba358ea6a0de3041012cf6aad0"}}