{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T14:25:05Z","timestamp":1780410305618,"version":"3.54.1"},"reference-count":43,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2026,4,20]],"date-time":"2026-04-20T00:00:00Z","timestamp":1776643200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Acta Radiol"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>T2* mapping provides objective data on chondromalacia. However, its reliability in evaluating both patellar and trochlear cartilages has not yet been established.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To evaluate the repeatability and reproducibility of T2* mapping of patellar and trochlear cartilage in patients with patellofemoral maltracking, and to compare the reliability of axial and sagittal imaging planes for early detection of chondromalacia.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and Methods<\/jats:title>\n                    <jats:p>This retrospective study included 106 knees from patients aged 18\u201340 years presenting with anterior knee pain and MRI evidence of patellofemoral malalignment between January 2023 and August 2025. T2* mapping was performed on a 3\u2005T MRI scanner using standardized protocols. Patellar and trochlear cartilage were manually divided into 12 compartments in axial and sagittal planes. Regions of interest were placed manually, and T2* relaxation times were measured independently by a musculoskeletal radiologist and an orthopedic surgeon. Intra- and inter-observer reliability were assessed using intraclass correlation coefficients (ICCs).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Most compartments demonstrated good-to-excellent intra- and inter-observer agreement (ICC \u22650.75), particularly in the upper and mid patellar cartilage zones. Axial-plane measurements consistently showed higher ICC values than sagittal-plane measurements. The lowest reliability was observed in lower cartilage zones and in sagittal-plane measurements. All results were statistically significant (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009&lt;0.001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>T2* mapping of the patellofemoral joint provides reliable measurements, with superior performance in the axial plane and in mid-upper zones. Routine use of axial-plane T2* mapping may facilitate early detection of chondromalacia in young adults with anterior knee pain, potentially improving clinical decision-making and preventing irreversible cartilage damage.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/02841851261438071","type":"journal-article","created":{"date-parts":[[2026,4,20]],"date-time":"2026-04-20T13:00:23Z","timestamp":1776690023000},"page":"517-527","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["T2* mapping of the patellofemoral joint at 3 T MRI: a repeatability and reproducibility study"],"prefix":"10.1177","volume":"67","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4073-9665","authenticated-orcid":false,"given":"Atilla Hikmet","family":"Cilengir","sequence":"first","affiliation":[{"name":"Izmir Democracy University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4062-5112","authenticated-orcid":false,"given":"Ugurcan","family":"Suner","sequence":"additional","affiliation":[{"name":"Van Training and Research Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-5071-0620","authenticated-orcid":false,"given":"Yilmaz","family":"Onder","sequence":"additional","affiliation":[{"name":"Izmir Katip Celebi University, Atat\u00fcrk Training and Research Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7075-0873","authenticated-orcid":false,"given":"Tugrul","family":"Bulut","sequence":"additional","affiliation":[{"name":"Izmir Katip Celebi University, Atat\u00fcrk Training and Research Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1225-2526","authenticated-orcid":false,"given":"Merve","family":"Gursoy","sequence":"additional","affiliation":[{"name":"Acibadem Izmir Kent Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2380-4197","authenticated-orcid":false,"given":"Berna","family":"Dirim Mete","sequence":"additional","affiliation":[{"name":"Izmir Democracy University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,4,20]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00330-011-2275-3"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/jor.25384"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00132-021-04099-4"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1186\/s40634-021-00350-1"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-018-2951-3"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-015-2217-2"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1186\/s12891-017-1679-x"},{"key":"e_1_3_2_9_2","first-page":"487","article-title":"Articular cartilage: degeneration and osteoarthritis, repair, regeneration, and transplantation","volume":"47","author":"Buckwalter JA","year":"1998","unstructured":"Buckwalter JA, Mankin HJ. Articular cartilage: degeneration and osteoarthritis, repair, regeneration, and transplantation. Instr Course Lect 1998;47:487\u2013504.","journal-title":"Instr Course Lect"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.mri.2004.01.071"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.orthres.2003.09.008"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2017.11.018"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2322030976"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-020-72299-7"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1136\/bmjopen-2014-006895"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.21037\/qims-20-674"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-012-1511-5"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.crad.2013.01.023"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.21014"},{"key":"e_1_3_2_20_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11420-008-9106-3"},{"key":"e_1_3_2_21_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2010.10.030"},{"key":"e_1_3_2_22_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2010.10.029"},{"key":"e_1_3_2_23_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2011.01.023"},{"key":"e_1_3_2_24_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.25757"},{"key":"e_1_3_2_25_2","doi-asserted-by":"publisher","DOI":"10.1259\/bjr.20151075"},{"key":"e_1_3_2_26_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00330-018-5826-z"},{"key":"e_1_3_2_27_2","doi-asserted-by":"publisher","DOI":"10.3390\/diagnostics13152534"},{"key":"e_1_3_2_28_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.25061"},{"key":"e_1_3_2_29_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.12121413"},{"key":"e_1_3_2_30_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11547-017-0781-3"},{"key":"e_1_3_2_31_2","doi-asserted-by":"publisher","DOI":"10.1186\/s13244-019-0755-1"},{"key":"e_1_3_2_32_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.216.2.r00au07582"},{"key":"e_1_3_2_33_2","doi-asserted-by":"publisher","DOI":"10.1259\/0007-1285-66-789-755"},{"key":"e_1_3_2_34_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-011-1299-8"},{"key":"e_1_3_2_35_2","unstructured":"Wolfe S Varacallo M Thomas JD et al. Patellar instability. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing 2024. Available from: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK482427\/."},{"key":"e_1_3_2_36_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.09090596"},{"key":"e_1_3_2_37_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2006.10.001"},{"key":"e_1_3_2_38_2","doi-asserted-by":"publisher","DOI":"10.3348\/kjr.2016.17.6.903"},{"key":"e_1_3_2_39_2","doi-asserted-by":"publisher","DOI":"10.1159\/000490796"},{"key":"e_1_3_2_40_2","doi-asserted-by":"publisher","DOI":"10.1177\/1947603518783481"},{"key":"e_1_3_2_41_2","doi-asserted-by":"publisher","DOI":"10.1177\/1947603520961165"},{"key":"e_1_3_2_42_2","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.21005"},{"key":"e_1_3_2_43_2","doi-asserted-by":"publisher","DOI":"10.1186\/s12880-022-00799-1"},{"key":"e_1_3_2_44_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejro.2021.100329"}],"container-title":["Acta Radiologica"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/02841851261438071","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/02841851261438071","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/02841851261438071","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T13:47:16Z","timestamp":1780408036000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/02841851261438071"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,4,20]]},"references-count":43,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2026,6]]}},"alternative-id":["10.1177\/02841851261438071"],"URL":"https:\/\/doi.org\/10.1177\/02841851261438071","relation":{},"ISSN":["0284-1851","1600-0455"],"issn-type":[{"value":"0284-1851","type":"print"},{"value":"1600-0455","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,4,20]]}}}