{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T08:39:26Z","timestamp":1782895166585,"version":"3.54.5"},"reference-count":34,"publisher":"Termedia Sp. z.o.o.","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pol J Radiol"],"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To determine the intra- and interrater reliability of the anterior cruciate ligament (ACL) graft signal-to-noise quotient (SNQ) assessed on magnetic resonance imaging (MRI) using a standardized coronal-oblique plane and region-of-interest (ROI) measurement protocol.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and methods<\/jats:title>\n                    <jats:p>Twelve adults following ACL reconstruction underwent MRI graft assessment. Five ROIs were placed along the intra-articular portion of the ACL graft. Posterior cruciate ligament (PCL) and background ROIs were used for SNQ normalization (SNQ = [ACL signal \u2212 PCL signal]\/background signal). Two radiologists independently performed two blinded measurement sessions, 1 week apart. Reliability included intraclass correlation coefficients (ICCs), 95% confidence intervals (CIs), standard error of measurement (SEM), and smallest detectable difference (SDD).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Intrarater ICCs for individual ROIs ranged from 0.67 to 0.90, with the highest reliability at R2 (ICC = 0.90; 95% CI: 0.70-0.97) and the lowest at R5 (ICC = 0.67; 95% CI: 0.20-0.89). Corresponding SEM values ranged from 0.31 to 1.01 and SDD from 0.87 to 2.79. Interrater ICCs ranged from 0.52 to 0.83, again highest at R2 (ICC = 0.83; 95% CI: 0.65-0.92) and lowest at R5 (ICC = 0.52; 95% CI: 0.15-0.76). Interrater SEM values ranged from 0.51 to 1.23 and SDD from 1.43 to 3.43. Averaging SNQ across all five ROIs improved reliability, yielding excellent intrarater agreement (ICC = 0.90; 95% CI: 0.67-0.97; SEM = 0.28; SDD = 0.76) and good interrater agreement (ICC = 0.85; 95% CI: 0.67-0.93; SEM = 0.34; SDD = 0.96).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The proposed MRI-based SNQ protocol demonstrates excellent intrarater and good interrater reliability over a 1-week interval. ROI averaging meaningfully enhances reproducibility and provides actionable SDD thresholds for detecting ACL graft signal change.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.5114\/pjr\/218236","type":"journal-article","created":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T07:24:52Z","timestamp":1782890692000},"page":"299-305","source":"Crossref","is-referenced-by-count":0,"title":["Reliability of anterior cruciate ligament (ACL) graft signal intensity measurement on MRI: a novel method with intra- and interrater analysis over a 1-week interval"],"prefix":"10.5114","volume":"91","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-2699-1773","authenticated-orcid":false,"given":"Wojciech","family":"Szewczyk","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-5118-7745","authenticated-orcid":false,"given":"Micha\u0142","family":"Marek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8650-2746","authenticated-orcid":false,"given":"Florian","family":"Forelli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8150-7513","authenticated-orcid":true,"given":"Maciej","family":"Bia\u0142y","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3061","published-online":{"date-parts":[[2026,6,22]]},"reference":[{"key":"ref-1918598","doi-asserted-by":"crossref","unstructured":"Frobell RB, Lohmander LS, Roos HP. 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