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-  2015 

痛风性关节炎的双能量CT影像学诊断 DECT Diagnosis of Gouty Arthritis

Keywords: 痛风性关节炎,尿酸盐结晶,DECT,影像表现,诊断

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Abstract:

目的:分析痛风性关节炎(GA)的双能量CT(DECT)影像学表现,探讨痛风性关节炎DECT的诊断价值。方法:回顾性总结GA 188例DECT、48例X线、17例MRI影像学表现,比较DECT双能量分析对痛风结节的检出率,比较急性期、非急性期痛风受累关节的DECT影像学表现。结果:GA急性期有65例、非急性期有123例,男∶女为13.5∶1,平均年龄(55.2±15.2)岁。DECT双能量分析前后对急性期痛风结节检出率分别为16.92%、69.23%,对非急性期痛风结节检出率分别为20.32%、90.24%,差异均有显著性,P<0.05。GA急性期与非急性期比较痛风结节、关节囊及关节面病变检出率均有显著性差异,P<0.05。MRI检出GA急性期、非急性期关节软骨病变率分别为80%、66.7%。结论:DECT双能量分析可以特异性检出痛风结节,显著提高痛风结节的检出率。DECT能较好地检出痛风关节病变,非急性期痛风结节、关节囊、关节面病变率均高于急性期关节病变。MRI可以敏感地检出关节软骨病变。X线能检出非急性期痛风关节的改变

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