ADC值和常规T2WI鉴别颅底脊索瘤和侵袭性垂体瘤的价值

Journal of Practical Radiology(2017)

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Abstract
目的 探讨表观扩散系数(ADC)和常规T2WI在颅底脊索瘤和侵袭性垂体瘤(IPA)鉴别诊断中的价值.方法 回顾性分析本院经病理证实且影像学有鞍区破坏的15例颅底脊索瘤和向鼻咽部侵犯的19例IPA.计算肿瘤的最小ADC值、标准ADC值和相对T2WI(rT2WI)值,应用独立样本t检验和绘制受试者工作特征(ROC)曲线等统计学方法,评价三者在鉴别颅底脊索瘤和IPA的诊断效能.结果 标准ADC、最小ADC值和rT2WI在鉴别2种肿瘤时均有统计学意义(P<0.01),所得ROC曲线下面积依次下降.结论 ADC值和rT2WI信号强度均有助于颅底脊索瘤和IPA之间的鉴别.
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