甲状旁腺腺瘤的MRI诊断

目的研究甲状旁腺腺瘤的MRI表现，并结合文献复习评价其诊断价值。方法6例经病理证实甲状旁腺腺瘤合并甲状旁腺机能亢进患者均经SE序列T1加权成像和T2加权成像，部分患者还经FL2D T1加权成像及STIR序列成像，以及Gd—DTPA增强扫描。结果研究证实，甲状旁腺腺瘤在T1WI上呈稍低信号，在T2WI上呈高信号；增强扫描呈轻一中度强化。结论MRI能清晰显示甲状旁腺腺瘤的大小、形态、部位及其与周围组织结构的关系，因此，它是诊断本病的最佳方法之一。

MRI diagnosis of parathyroid adenoma

Objective To study the MRI findings of parathyroid adenoma and to analyze together with literature review their diagnostic value. Methods Six patients（5 man, 1 woman; aged 28-40 years） with pathologically proved parathyroid adenoma associated with primary hyperparathyroidism underwent SE sequence MR T1WI and T2WI. Partial patients underwent additional FL2D T1WI and STIR sequence MRI. Results The study demonstrated that, parathyroid adenoma were slight hypointensity on T1WI, hyperintensity on T2WI, and mild to moderate enhancement after the administration of contrast medium （Gd-DTPA）. Conclusion MRI can clearly show the size, shape and site of parathyroid adenoma and its correlation with peripheral structures so that it is one of optimal methods to diagnose this disease.