摘要:目的:探讨MRI对脑内脱髓鞘假瘤(DPT)诊断及疗效观察价值。方法:回顾性分析经临床治疗证实的1例DPT患者的MRI资料,治疗前和治疗后均行MRI平扫、扩散加权成像(DWI)和增强扫描,并复习相关文献对其进行总结。结果:患者治疗前MRI表现为单发不规则肿块,边界清楚,灶周有轻度水肿带,瘤体T2WI呈高信号,T1WI呈低信号,DWI呈环状高信号,增强扫描呈半环状强化;使用激素治疗后瘤灶体积缩小,T2WI呈稍高信号,T1WI呈稍低信号,DWI呈等信号,增强扫描无明显强化,灶周水肿及占位效应消失。结论:MRI平扫并结合DWI和增强扫描技术对DPT的诊断和疗效评价有很强的应用价值。
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