{"as_of":"2026-08-19T19:29:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:ef50f2f3b61d5ef5a5b6de64445a346d0c25c42c00d1a938efffda831e296beb","coverage":[{"denominator":25,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":25,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-11T11:46:21.563102Z","state":"measured"},{"denominator":25,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":25,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-19T06:32:44.657259+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[],"links":{"evidence":"/evidence","html":"/paper/2412.15018/citation-record","integrity":"/paper/2412.15018/integrity","json":"/paper/2412.15018/citation-record.json","paper":"/paper/2412.15018"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1088/1361-6560/ac43fc","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.793206Z","title":"PET respiratory motion correction: quo vadis?","venue":null,"work_id":"0066b469-854e-4444-b9d9-01e4159f03a6","year":2022},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.438160Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:6f8d5d8fc50f2a364efdaf1ff6582b486779aa8bc126c71982987c12a5a00b09","observation_id":"484c23d1-5395-4e05-b516-4d263b1a58dc","resolution":{"observed_at":"2026-08-11T11:46:21.797965Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2011.61537","doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:22.441138Z","title":"Device-less gating for PET/CT using PCA,","venue":null,"work_id":"30fa181a-306a-42c6-8175-21ef27ebc2be","year":2011},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.445771Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:0d6a651da8c29bcb72302d8f089ff5c786241755ead9deb6fcc8d72fc9758465","observation_id":"5a21324a-c8c5-46b8-8964-22aa86ba9020","resolution":{"observed_at":"2026-08-11T11:46:22.448470Z","resolver_source":"raw_fallback","status":"malformed_identifier"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.452660Z","title":"Time-of-flight pet data determine the attenuation sinogram up to a constant,","venue":null,"work_id":null,"year":2012},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.452660Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:cb811721b62282686ca75ba655e80f3ddaee1cc2e264e07bb03c41d9787983e4","observation_id":"a128da62-38de-4bcd-af70-9e0f9cf7eb4a","resolution":{"observed_at":"2026-08-11T11:46:21.452660Z","resolver_source":null,"status":"malformed_identifier"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.458216Z","title":"Simultaneous reconstruction of activity and attenuation in time-of-flight PET,","venue":null,"work_id":null,"year":2012},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.458216Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:9065d07f6d575b0e4c8884605a2524908e7c117309abbeb33300d6cfd7fd0100","observation_id":"2112ff8d-de5b-4c58-b29c-a49b5c86218f","resolution":{"observed_at":"2026-08-11T11:46:21.458216Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2014.23181","doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:22.271900Z","title":"ML-reconstruction for TOF-PET with simultaneous estima- tion of the attenuation factors,","venue":null,"work_id":"8dd0eeb7-7b77-4559-aaac-209965b76c38","year":2014},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.463746Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:16c85da55a547ddc1a71117f5bf00372707c2d25573516eeebdb45fb9b61ff17","observation_id":"91e06bdc-968d-42a0-92a5-9b6ab414ce15","resolution":{"observed_at":"2026-08-11T11:46:22.280370Z","resolver_source":"raw_fallback","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.468761Z","title":"Distributed optimization and statistical learning via the alternating direction method of multipliers,","venue":null,"work_id":null,"year":2011},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.468761Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:6cf925084793fd2c50f84ac2a707f86f9a4c7ad903567347c520430bf00ce5aa","observation_id":"231a26f1-a3dc-436d-b20c-5c8af25a8a92","resolution":{"observed_at":"2026-08-11T11:46:21.468761Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1088/1361-6560/aaa201","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.760740Z","title":"Anthropomorphic thorax phantom for cardio-respiratory motion simulation in tomographic imaging,","venue":null,"work_id":"d0bdaad8-6774-41b2-a405-9b113394d55c","year":2018},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.474756Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:b181f1d9889c67b7225ffa3f0a05041ca87954777c5afee5099bd34a50f4501d","observation_id":"3412f3b7-9b5e-462f-858c-9cae94158bb2","resolution":{"observed_at":"2026-08-11T11:46:21.764699Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2012.22066","doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:22.197837Z","title":"Noise properties of motion-compensated tomographic image recon- struction methods,","venue":null,"work_id":"6ffe8024-c4c0-47cf-8e37-6b65263290e5","year":2013},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":8,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.480032Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:0aca3113aed21cadecd7543ef282dd8b72c86ed70f627d47ebfc0dbabca3a8ff","observation_id":"b72aa4c6-1ffa-472d-a2a6-4087b10fffb9","resolution":{"observed_at":"2026-08-11T11:46:22.205761Z","resolver_source":"raw_fallback","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1109/23.632704","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.746697Z","title":"Non-rigid summing of gated pet via optical flow,","venue":null,"work_id":"ed42e2f9-2b04-4d1f-830d-2c1042c71826","year":1997},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":9,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.484757Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:3665d900bd70b671a8330930d01c3fc293d2c6aea52a110f7d909bcf1d2198bf","observation_id":"a285ecf1-3514-4cd2-9dfd-6d07bd584a9e","resolution":{"observed_at":"2026-08-11T11:46:21.751607Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2006.87089","doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:22.087887Z","title":"Lung motion correction on respiratory gated 3-d pet/ct images,","venue":null,"work_id":"0da3e740-1ab5-437e-a3da-85bd86012572","year":2006},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":10,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.490013Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:12558d99a1dba64205be515567109026865c6edbee876ff149b03b463bae90b5","observation_id":"7406b9ae-67a3-4b65-b680-ebf833a0a925","resolution":{"observed_at":"2026-08-11T11:46:22.095017Z","resolver_source":"raw_fallback","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:22.507807Z","title":"Regularized b-spline deformable registration for respiratory motion cor- rection in PET images,","venue":null,"work_id":"a90281bf-183a-4c60-8354-4b48cb1fb3d4","year":null},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":11,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.495098Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:142a33c16794299c84d4b9f07ec7aff54ad2f7d20cf345e8899a8cea07f66387","observation_id":"268c4427-d35d-4d79-a033-d001ed72d678","resolution":{"observed_at":"2026-08-11T11:46:22.513284Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.2967/jnumed.117.203000","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.716974Z","title":"Respiratory motion compensation for PET/CT with motion information derived from matched attenuation-corrected gated PET data,","venue":null,"work_id":"4fa502c7-7eb7-4c1e-b7f1-1bb8a8d33bae","year":2018},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.505631Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:04ab4bd82f52b96a0ebc6f1c6b4d9dbe02e1f56bf803e98c1c2a99b883fb252b","observation_id":"b20bd935-076d-4aed-ba03-ab99ea191b28","resolution":{"observed_at":"2026-08-11T11:46:21.721313Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:22.491578Z","title":"Maximum-likelihood joint image reconstruction/motion estimation in attenuation-corrected respiratory gated pet/ct using a single attenuation map,","venue":null,"work_id":"ae85f72e-343b-4d59-b171-66e1e6ebf576","year":2016},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":13,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.509906Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:285b81d5bebd12899313a1dc5b7cd558dd7aba54a4a79b9c94c9fb88896698d2","observation_id":"0da99337-f07b-42a9-a8d5-55998527e422","resolution":{"observed_at":"2026-08-11T11:46:22.496859Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1002/mp.12253","metadata_source":"openalex","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-12T11:03:20.376878Z","title":"Evaluation of a direct motion estimation/correction method in respiratory-gated PET/MRI with motion-adjusted attenuation,","venue":"Medical Physics","work_id":"8031f3b2-e0a6-4f42-b0fe-4e54afe78860","year":2017},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":14,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.514124Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:71d6555eba20682f1771244ae1b6a43fdbbb86eb368986fd8600c30b0e5fd218","observation_id":"9483526b-7817-4023-946f-0f23832082b0","resolution":{"observed_at":"2026-08-11T11:46:21.702598Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1088/0031-9155/61/3/l11","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.675360Z","title":"Maximum-likelihood joint image reconstruction and motion estimation with misaligned attenuation in TOF-PET/CT,","venue":null,"work_id":"0669d8dd-96e3-421a-ac36-db9080640ee3","year":2016},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.518439Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:ddccf5f5ae3ed3fa40cbfd4e0be2bd2aff36d68082c66991676ae9f579361bb4","observation_id":"10d5afa4-1b37-4777-a4f1-25cab0127f79","resolution":{"observed_at":"2026-08-11T11:46:21.682160Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.522874Z","title":"Joint estimation of activity, attenuation and motion in respiratory-gated time-of-flight pet,","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":16,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.522874Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:049a67f5693a3422e7ef87086df09ec4395b40aa748a562885feb9a0cf83e013","observation_id":"74b7d5f3-8d92-47d6-86d5-10c1c4fe3291","resolution":{"observed_at":"2026-08-11T11:46:21.522874Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:22.475446Z","title":"A modified expectation maximization algorithm for penalized likelihood estima- tion in emission tomography,","venue":null,"work_id":"ce81d754-2c19-426c-a41d-590e18c3e28c","year":null},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.527130Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:9ab2dd0608b43ef058d0432b47d17c68f63d647ebb749addefe9eef8dc6c16e1","observation_id":"b9e6fe16-ac0e-4925-85cd-a711406a3a0f","resolution":{"observed_at":"2026-08-11T11:46:22.480376Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1186/s40658-015-0132-1","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.636934Z","title":"Performance evaluation of the biograph mCT flow PET/CT system according to the NEMA NU2-2012 standard,","venue":null,"work_id":"252f8e41-3522-4cf0-8bfe-9e3e15387106","year":2012},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":18,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.536977Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:c579fb11d6c43226b302f5697e310568f7ce877f9b841bd920e19e48af98df8e","observation_id":"884f778d-6407-4a5c-bf08-b6260710affb","resolution":{"observed_at":"2026-08-11T11:46:21.643565Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.2967/jnumed.117.189514","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.614566Z","title":"Studies of a next-generation silicon-photomultiplier-based time-of-flight PET/CT system,","venue":null,"work_id":"cbf3d343-d4cf-4457-8cca-632441f5fb82","year":2017},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":19,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.541984Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:5decb0ba6e9bd573485ef37b64cfc2a9513d0d45ecbed1dc273816e8258241ee","observation_id":"d2bd338a-b042-4954-ba09-a1511bc59332","resolution":{"observed_at":"2026-08-11T11:46:21.623751Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1704.06209","last_updated":"2017-04-20T16:15:40Z","snapshot_observed_at":"2026-08-16T08:39:14.978501Z","submitted_at":"2017-04-20T16:15:40Z","title":"ADMM Penalty Parameter Selection by Residual Balancing","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1704.06209","snapshot_observed_at":"2026-08-11T11:46:21.546793Z","title":"ADMM penalty parameter selection by residual balancing,","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":20,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.546793Z"},"links":{"cited_paper":"/paper/1704.06209","citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:8ef067c581a330fcfba3ed97e00adda0fb1fb13d76f94fee9ea558a603782ccb","observation_id":"e2567f85-3c34-47bd-97a2-b60696378e81","resolution":{"observed_at":"2026-08-11T11:46:21.546793Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2009.20282","doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.888446Z","title":"Fast gradient-based algorithms for constrained total variation image de- noising and deblurring problems,","venue":null,"work_id":"c414bb9a-7a3f-47a8-9c7f-fc6ac3334c7c","year":2009},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.558270Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:e0ec5915417d15c4e5cf32e7192bd214e6664ccca302557119160bc34dad67c9","observation_id":"cd51a05a-e299-45fe-a0eb-dec771ceb538","resolution":{"observed_at":"2026-08-11T11:46:21.896320Z","resolver_source":"raw_fallback","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:22.458493Z","title":"Diffeomorphic demons: Efficient non- parametric image registration,","venue":null,"work_id":"d0b1395d-5cac-4747-8a07-e25d07fb7d97","year":2009},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":22,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.563102Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:8788785b127c562c405f42517aaa83cb247ac30c889eb4b9d9553d3f95067fa6","observation_id":"3949f815-282d-4725-abdb-c2c802ad25cf","resolution":{"observed_at":"2026-08-11T11:46:22.463599Z","resolver_source":"raw_fallback","status":"malformed_identifier"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1109/42.370409","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.656624Z","title":null,"venue":null,"work_id":"5947e075-3da0-46cb-8d71-a88331b2f33d","year":null},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":1995,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.531753Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:8010ba6a88b38ea50e98fe215d8dc84f8d6cb24c7cced634cb9991c58d992e93","observation_id":"3f78911e-4993-44eb-8a10-d5c128d777e2","resolution":{"observed_at":"2026-08-11T11:46:21.662480Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1088/0031-9155/54/9/008","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-11T11:46:21.732379Z","title":null,"venue":null,"work_id":"5b00390e-ad0e-41aa-85a3-5e03c3ef062a","year":null},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":2009,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.500496Z"},"links":{"citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:6ece0456f14b71c28bab45f62180f3a25b58d821fd4beafa1855ce125afea533","observation_id":"8eac8f84-acd6-44e0-86c3-da038c8f72c8","resolution":{"observed_at":"2026-08-11T11:46:21.736596Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1704.06209","last_updated":"2017-04-20T16:15:40Z","snapshot_observed_at":"2026-08-16T08:39:14.978501Z","submitted_at":"2017-04-20T16:15:40Z","title":"ADMM Penalty Parameter Selection by Residual Balancing","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1704.06209","snapshot_observed_at":"2026-08-11T11:46:21.552249Z","title":"[Online]","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET","version":2},"reference_index":2017,"source":"pdf_text","source_observed_at":"2026-08-11T11:46:21.552249Z"},"links":{"cited_paper":"/paper/1704.06209","citing_paper":"/paper/2412.15018"},"observation_digest":"sha256:d963957afdd75be88c003e01bc0aaff47110e598750cc9fd119568e9f706eacb","observation_id":"f88cc4c8-5516-4aeb-9130-3ebf1af8529a","resolution":{"observed_at":"2026-08-11T11:46:21.552249Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"paper":{"arxiv_id":"2412.15018","last_updated":"2025-03-17T11:31:52Z","latest_version":2,"primary_category":"physics.med-ph","snapshot_observed_at":"2026-08-16T00:52:27.647196Z","submitted_at":"2024-12-19T16:30:56Z","title":"Joint estimation of activity, attenuation and motion in respiratory-self-gated time-of-flight PET"},"reference_resolution":{"displayed":25,"state_counts":{"malformed_identifier":3,"metadata_mismatch":4,"parse_uncertain":0,"unresolved":5,"verified_exact":10,"verified_fuzzy":3},"total_outbound_references":25},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"thesis":"As of 19 August 2026, this Paper Citation Record lists 25 of 25 outbound references and 0 inbound Pith citation observations for arXiv:2412.15018."}