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首页> 外文期刊>AJR: American Journal of Roentgenology : Including Diagnostic Radiology, Radiation Oncology, Nuclear Medicine, Ultrasonography and Related Basic Sciences >Transverse thickening along the articular surface of the rotator cuff consistent with the rotator cable: identification with MR arthrography and relevance in rotator cuff evaluation.
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Transverse thickening along the articular surface of the rotator cuff consistent with the rotator cable: identification with MR arthrography and relevance in rotator cuff evaluation.

机译：沿转子袖带的关节表面横向增厚，与转子电缆一致：利用MR关节造影进行识别，并评估转子袖带的相关性。

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OBJECTIVE: The purposes of this study were to describe the imaging appearance of transverse thickening along the articular surface of the supraspinatus and infraspinatus tendons presumed to represent the rotator cable on MR arthrographic images obtained with the shoulder in abduction and external rotation (ABER) and in the non-ABER position and to assess the role of the rotator cable in the diagnosis of rotator cuff tears. MATERIALS AND METHODS: The study group comprised 54 patients who underwent arthroscopy of the shoulder and preoperative MR arthrography in which ABER images were obtained. Two blinded reviewers independently examined the ABER and non-ABER images for the presence of the rotator cable and rotator cuff tears. RESULTS: In intact rotator cuffs, the presumed rotator cable was not well visualized on non-ABER images. In one case of prominent rotator cable, MR arthrography showed no tear on non-ABER images, but at arthroscopy, a partial-thickness undersurface tear was found. On non-ABER images, both readers readily visualized the rotator cable in eight and 10 of 18 cases (44% and 56%) of partial-thickness undersurface tear and four of five cases (80%) of full-thickness tear. On ABER images, both readers readily visualized the rotator cable in 15 and 17 of 31 cases (48% and 55%) of intact cuff, 14 and 15 of 18 cases (78% and 83%) of undersurface tear, and four and five cases (80% and 100%) of full-thickness tear. Interobserver agreement on cable visualization was almost perfect (kappa = 0.86). CONCLUSION: On non-ABER MR arthrographic images, thickening along the articular side of the supraspinatus and infraspinatus tendons presumed to represent the rotator cable suggests the presence of a partial-thickness rotator cuff tear. On ABER images, the cable is well defined in intact and torn rotator cuffs.
机译：目的：本研究的目的是描述在肩关节外展和外旋（ABER）以及在获得的MR关节造影图像上，沿脊上肌和蛛网下肌腱的关节表面横向增厚的影像学表现，以代表旋转肌腱。非ABER位置，并评估转子电缆在诊断转子袖口撕裂中的作用。材料与方法：研究组包括54例接受了肩关节镜检查和术前MR关节造影的患者，这些患者均获得了ABER图像。两名不知情的审阅者独立检查了ABER和非ABER图像中是否存在转子电缆和转子袖口撕裂。结果：在完整的袖套中，在非ABER图像上无法很好地可视化假定的转子电缆。在一例突出的旋转电缆中，MR关节造影在非ABER图像上未显示撕裂，但在关节镜检查中发现部分厚度的地下撕裂。在非ABER图像上，两个阅读器都可以轻松看到18例局部厚度的表面下撕裂中的8例和10例（44％和56％）的旋转肌，以及5例全厚度的撕裂中的4例（80％）。在ABER图像上，两个阅读器都可以轻松观察到31例完整袖套中的15例和17例（48％和55％）的转子电缆，18例下表面撕裂中的14例和15例（78％和83％）以及4例和5例案例（80％和100％）的全层撕裂。观察员之间关于电缆可视化的协议几乎是完美的（kappa = 0.86）。结论：在非ABER MR关节造影图像上，沿上棘和假定伸肌肌腱的棘下肌腱的关节侧增厚提示存在部分厚度的肌腱袖口撕裂。在ABER图像上，电缆在完整且撕裂的袖套中定义良好。

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