Sports Health. 2009 Jul;1(4):293-300. doi: 10.1177/1941738109338361.
Both magnetic resonance imaging (MRI) and sonography are well suited to tendon imaging. A normal tendon on MRI demonstrates low signal intensity and on sonography, an echogenic fibrillar pattern. MRI is considered the imaging gold standard, providing an anatomic overview and excellent soft tissue contrast. Sonography is a more rapidly performed examination; it has greater resolution than that of MRI; it allows dynamic evaluation of tendons and muscles; and it can guide percutaneous therapeutic procedures. Moreover, the advent of sonographic extended-field-of-view imaging allows the demonstration of the entire length of a tendon, matching MRI's ability to display a large anatomic region. Sonography should best be considered a focused examination, concentrating on the area of pain and clinical suspicion of pathology, whereas MRI can provide a global assessment of the region of concern. Both modalities demonstrate high accuracy for abnormalities of various tendons. This article reviews normal tendon anatomy and its imaging appearance, as well as the imaging appearances of tendon degeneration and tear.
磁共振成像（MRI）和超声都非常适合用于肌腱成像。正常的肌腱在 MRI 上显示低信号强度，在超声上显示出回声纤维状模式。MRI 被认为是成像的金标准，提供了全面的解剖结构和出色的软组织对比度。超声检查的速度更快；它的分辨率高于 MRI；它可以动态评估肌腱和肌肉；并且可以引导经皮治疗程序。此外，超声扩展视野成像的出现使整个肌腱的长度都可以显示出来，与 MRI 显示大的解剖区域的能力相匹配。超声最好被认为是一种有针对性的检查，集中在疼痛区域和对病理的临床怀疑，而 MRI 可以对关注区域进行全面评估。这两种方式对于各种肌腱的异常都具有很高的准确性。本文回顾了正常肌腱解剖及其影像学表现，以及肌腱变性和撕裂的影像学表现。
