色素沉着结节性滑膜炎的MRI诊断

目的：探讨色素沉着结节性滑膜炎的检查方法以及各种检查方法的价值。方法：６例病理证实的色素沉着结节性滑膜炎的患者做了ＭＲＩＴ１加权成像、Ｔ２加权成像以及增强后的Ｔ１加权成像序列。２例做了关节腔造影。结果：６例关节滑膜不均匀增厚，关节周围弥漫性或局限性Ｔ１加权成像、Ｔ２加权成像均为低信号的结节。强化后滑膜增强，结节强化。关节腔造影示关节软骨受损。结论：色素沉着结节性滑膜炎的ＭＲＩ检查具有特征性改变，ＭＲ可以做出正确诊断。

Pigmentary Villonodular Synovitis of Jiont:MR Imaging Diagnosis

Objective:To evaluate the method and valus of MRI examination for pigmentary villonodular synovitis(PVNS).Methods:6 patients with pigmented villonodularsynovitis proved by histopathologically were imaged by T 1WI,T 2WI and contrast eahanccd T 1WI of MRI arthrograpy was done in 2 cases.Results:MRI showed nonhomogeneous synovial proliferation,and localied or diffuse masses with low signal intenrsity on both T 1WI and T 2WI around joint.The proliferated synovium and synovial nodules were enhanced after contrast administration.The arthrography showed arthro cartilagines to be damaged.Conclusion:PVNS is of characteristic MR findings.The diagnesis of PVNS can be correctly established based on MR features.