临床医学工程2026，Vol.33Issue(6)：655-658,4.DOI:10.3969/j.issn.1674-4659.2026.06.0655
MRI对颞下颌关节盘变性移位的诊断价值及影像学特征分析
Diagnostic Value of MRI for Temporomandibular Joint Disc Degeneration and Displacement and Analysis of Imaging Features
摘要
Abstract
Objective To explore the diagnostic value of magnetic resonance imaging(MRI)for temporomandibular joint disc degeneration and displacement,and analyze its imaging features.Methods A total of 67 patients with suspected temporomandibular joint disc degeneration and displacement admitted to Lanzhou Second People's Hospital from January 2025 to June 2025 were selected as research subjects,and all patients underwent MRI examination.Taking the comprehensive clinical diagnosis as the gold standard,the efficacy of MRI in diagnosing temporomandibular joint disc degeneration and displacement was evaluated,and the differences in MRI signs between patients with and without temporomandibular joint disc degeneration and displacement were compared.Results Among the 67 patients,62 cases were confirmed as temporomandibular joint disc degeneration and displacement and 5 cases as non-temporomandibular joint disc degeneration and displacement by comprehensive clinical diagnosis;MRI examination detected 61 cases of temporomandibular joint disc degeneration and displacement and 6 cases of non-temporomandibular joint disc degeneration and displacement.The accuracy,sensitivity,specificity,positive predictive value and negative predictive value of MRI in diagnosing temporomandibular joint disc degeneration and displacement were 95.52％(64/67),96.77％(60/62),80.00％(4/5),98.36％(60/61)and 66.67％(4/6),respectively.The MRI results showed good consistency with comprehensive clinical diagnosis(Kappa value=0.703).MRI signs indicated that the detection rates of reducible anterior joint disc displacement,joint disc degeneration and joint cavity effusion in patients with temporomandibular joint disc degeneration and displacement were higher than those in patients without temporomandibular joint disc degeneration and displacement,and the measured values of anteroposterior and left-right diameters of the condyle were smaller than those in patients without temporomandibular joint disc degeneration and displacement(P＜0.05).Conclusions MRI has high diagnostic efficacy for temporomandibular joint disc degeneration and displacement,and can clearly visualize the abnormal changes of soft tissue and bony structures of the temporomandibular joint,providing a reliable imaging basis for clinical screening and definitive diagnosis of temporomandibular joint disc degeneration and displacement.关键词
磁共振成像/颞下颌关节盘变性移位/诊断价值/影像学特征Key words
Magnetic resonance imaging/Temporomandibular joint disc degeneration and displacement/Diagnostic value/Imaging feature分类
医药卫生引用本文复制引用
孙西浚,吴小桃..MRI对颞下颌关节盘变性移位的诊断价值及影像学特征分析[J].临床医学工程,2026,33(6):655-658,4.基金项目
兰州市科技计划项目(项目编号:2023-ZD-109) （项目编号:2023-ZD-109）
