{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T13:39:35Z","timestamp":1784900375409,"version":"3.55.0"},"reference-count":18,"publisher":"Oxford University Press (OUP)","issue":"1148","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BJR"],"published-print":{"date-parts":[[2023,8]]},"abstract":"Objectives:<\/jats:title> To investigate the interdisciplinary interobserver reproducibility of Hertel-exophthalmometry-like protrusion measurements on multidetector-row-computed-tomography- (MDCT-) images of the orbit to facilitate structured evaluation of the orbit and mid-face. <\/jats:p><\/jats:sec>Methods:<\/jats:title> Respective reproducibility of base-length along the interfronto-zygomatic line, right and left ocular protrusion, and deriving interocular difference was measured in this retrospective (04\/2009-03\/2020) single-centre observational study. MDCT-series and slice-positions were selected independently, using picture-archiving-and-communication-system- (PACS-) tools on tilt-corrected axial MDCT-images (slice-thickness 0.6\u20133.0\u2009mm, window\/centre 350\/50 HU) in 37 selected adult patients (24 female, age 57 \u00b1 13 years, average\u00b1standard-deviation) with clinical indication for Hertel-exophthalmometry, by one radiology-attending, two ophthalmology-attendings, one critical-care-attending, and one ear-nose-throat-surgery resident, respectively. Bland-Altman plots and Wilcoxon-matched-pairs-signed-rank-tests compared interobserver results. <\/jats:p><\/jats:sec>Results:<\/jats:title> Mean and median interobserver and intraobserver (radiology-attending) deviations were within 1\u2009mm of respective averages of base-length (98 \u00b1 4\u2009mm), right and left ocular protrusion (21 \u00b1 4\u2009mm) and interocular difference (2 \u00b1 1\u2009mm). Relative interobserver deviations were within 2.0% of average (all patients) for base-length, and 5.0% (>80% of patients) for ocular protrusion. Pairwise interobserver comparison showed no significant differences between interocular differences of protrusion. <\/jats:p><\/jats:sec>Conclusions:<\/jats:title> Respective measurements of base-length, ocular protrusion, and deriving interocular difference show high interdisciplinary interobserver reproducibility in tilt-corrected axial MDCT-images of the orbit or mid-face. <\/jats:p><\/jats:sec>Advances in knowledge:<\/jats:title> Hertel-exophthalmometry-like protrusion measurements did not depend on the years of experience or the medical subspecialty of the observer. Measurements are objective, well reproducible and important for multiple medical disciplines and should thus be included in pertinent radiology reports. <\/jats:p><\/jats:sec>","DOI":"10.1259\/bjr.20211408","type":"journal-article","created":{"date-parts":[[2023,6,19]],"date-time":"2023-06-19T10:17:26Z","timestamp":1687169846000},"source":"Crossref","is-referenced-by-count":3,"title":["Hertel-exophthalmometry-like multi-detector-row-CT-exophthalmometry: inter-disciplinary inter-observer reproducibility of measurements"],"prefix":"10.1093","volume":"96","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5908-0381","authenticated-orcid":false,"given":"Ullrich G","family":"Muller-Lisse","sequence":"first","affiliation":[{"name":"Department of Radiology, Klinikum der Ludwig-Maximilians-Universit\u00e4t M\u00fcnchen, Munich, Bavaria, 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