Objective To observe the diagnostic value of shoulder MR arthrographic fat-suppressed three-dimensional (3D) isotropic volumetric interpolated breath-hold examination (VIBE) sequence for labral tears. Methods MR arthrographic fat-suppressed 3D isotropic VIBE and conventional T1W turbo spin-echo sequences were performed in 79 patients. The results of arthroscopy were regarded as gold standards, the sensitivity, specificity and accuracy of fat-suppressed 3D VIBE and conventional TSE images for detection of labral tears were calculated and compared by 2 radiologists, respectively. K values were calculated to quantify the level of interobserver agreement. Results Twenty-seven of the 79 patients were classified as SLAP lesions, 44 as anterior labral tears, and 10 as posterior labral tears. There was no statistical difference between fat-suppressed 3D isotropic VIBE and conventional TSE regarding the sensitivity (81.48%-88.89%, 85. 19%-92. 59%) and specificity (82. 69%-84. 62%, 84. 62%-86. 54%) of SLAP lesions, sensitivity (88.64% -90.91%, 90. 91%-95. 45%) and specificity (94. 29%-97. 14%, 97.14%) of anterior labral tears, nor sensitivity (80. 00%-90. 00% , 80%) and specificity (92. 75%-95. 65% , 94. 20%-95. 65%) of posterior labral tears. At interobserver comparison, the consistency was very good. Conclusion Fat-suppressed 3D isotropic VIBE MR arthrography is a reliable method to evaluate labral tears.%目的 评价肩关节MR造影各向同性三维容积插入屏气(VIBE)序列对盂唇撕裂的诊断价值.方法 由2名影像诊断医师独立回顾性对比分析79例肩关节造影常规二维序列图像和各向同性三维VIBE重建图像,判定有无盂唇撕裂,计算敏感度和特异度,比较常规二维序列与各向同性三维VIBE诊断价值及两名影像诊断医师评价的一致性.结果 79例患者中,肩关节镜证实上方盂唇撕裂(SLAP损伤)27例,前方盂唇撕裂44例,后方盂唇撕裂10例.肩关节MR造影各向同性三维VIBE以及常规二维序列对上方盂唇撕裂的敏感度分别为81.48％(22/27)～88.89％(24/27)、85.19％(23/27)～92.59％(25/27),特异度为82.69％(43/52)～84.62％(44/52)、84.62％(44/52)～86.54％(45/52)；对前方盂唇撕裂的敏感度分别为88.64％(39/44)～90.91％(40/44)、90.91％(40/44)～95.45％(42/44),特异度为94.29％(33/35)～97.14％(34/35)、97.14％(34/35)；对后方盂唇撕裂的敏感度分别为80.00％(8/10)～90.00％(9/10)、80.00％(8/10),特异度为92.75％(64/69)～95.65％(66/69)、94.20％(65/69)～95.65％(66/69).2名影像诊断医师评价的一致性极好.各向同性三维VIBE和常规二维序列对于盂唇撕裂的诊断效能差异均无统计学意义.结论 肩关节MR造影各向同性三维VIBE序列成像是评价盂唇撕裂比较可靠的影像方法.
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