不同扫描方位MRI对肩关节盂唇Bankart损伤的诊断价值

摘要

目的:评估MRI单一方位扫描和综合3个方位扫描成像对于前下盂唇Bankart 损伤的诊断价值.方法:以关节镜表现作为诊断金标准,分析31例Bankart损伤者的MRI表现,分别计算单一方位和综合3个方位扫描对肩关节盂唇Bankart 损伤诊断的敏感度、特异度、阳性预测值、阴性预测值、准确度.结果:横轴位扫描对Bankart损伤的诊断敏感度为54.84%、特异度为80.77%;斜冠位敏感度为45.16%、特异度为84.61%;斜矢位敏感度为41.94%、特异度为88.46%;综合3个方位扫描的诊断敏感度为80.65%、特异度为88.46%.综合3个方位扫描诊断Bankart 损伤的敏感度高于单一方位扫描,比较差异均有统计学意义(均为P＜0.05).结论:对疑有Bankart 损伤患者行肩关节MRI扫描,扫描方位应包括横轴位、斜冠位和斜矢位.%Objective:To evaluate and compare the diagnostic value of single -directional scanning and inte -grated three-position MRI of in Bankart lesion of anterior inferior labrum. Methods; Using arthroscopic performance as diagnostic golden standard , we retrospectively analysed the MRIs of 31 cases with Bankart lesion. We calculated the sensitivity , specificity, positive predictive value , negative predictive value , and accuracy in the diagnosis of Bankart lesion using various single -directional scan and integrated three-position MRI. Results: The sensitivity and specificity o f Single axial scan , single oblique coronal scan , single oblique sagittal scan and comprehensive three-azimuth scan for the Bankart lesion diagnosis was 54. 84% and 80. 77% , 45. 16% and 84. 61% , 41. 94% and 88. 46% , 80. 64% and 88. 46% , respectively. The diagnostic sensitivity of integrated three-azimuth scan was higher than that of single-directional scan, with statistical significance. Conclusion: Conventional scanning program of patients with suspicion of Bankart lesion should take a comprehensive MRI including the horizontal axis bit , oblique coronal and oblique sagittal.