干燥综合征的腮腺3.0T MR检查

3.0T MR examination on parotid gland in Sjogren's syndrome

目的:探讨干燥综合征(SS)患者腮腺3.0T MRI的影像学特征,以提高对该病的诊断水平。资料与方法:对22例SS患者(A组)和21例非SS患者(B组)分别行腮腺MRI检查,分析两组腮腺的信号特点并计算体积大小,总结SS患者腮腺MRI的表现特征。结果:A组腮腺的MRI表现具有一定特点。与B组比较,A组腮腺在T1WI及T2WI上信号不均匀,呈斑点状、结节状表现,部分患者腮腺可发生脂肪变性;A组腮腺平均体积为52.2 cm3,小于B组的68.3 cm3。结论:SS患者腮腺MRI的表现较有特征,MRI检查可为临床诊断该病提供客观的影像学依据。

Objective： To evaluate the MRI characteristics of parotid gland in Sjogren＇s syndrome （SS）. Materials and Methods： MRI features of parotid gland were studied in 22 patients with SS（Group A） and 21 controls without SS（Group B）. Analyze the MRI features of parotid gland in each group, calculate the volume of each parotid gland, to summarize the MRI special manifestations of parotid gland in SS. Results： The typical MRI appearance of the parotid gland in group A was char- acterized by a loss of homogeneity in signal intensity on %- and T2-weighted images with speckled to nodular structures in the parotid gland, some glands developed fatty degeneration. The mean volume of parotid gland in group A was smaller than that in group B. Conclusions： MRI of parotid gland with SS has typical appearance, and MRI can provide objective imaging evidence for diagnosing the disease.