Pilocytic (PA) and pilomyxoid astrocytomas (PMA) are related low-grade tumors which occur predominantly in children. PMAs have a predilection for a supratentorial location in younger children with worse outcomes. However, the two have similar imaging characteristics. Quantitative MR sequences such as dynamic susceptibility contrast (DSC) perfusion and diffusion (DWI) were assessed for significant differences between the two tumor types and locations.

中文翻译：

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动态敏感性对比灌流和弥散加权成像对毛细血管星形细胞瘤和星形胶质细胞星形细胞瘤的鉴别

上皮型（PA）和绒毛状星形细胞瘤（PMA）是相关的低度肿瘤，主要发生于儿童。PMA倾向于在结局较差的年幼儿童中处于幕上位置。但是，两者具有相似的成像特性。评估了定量MR序列（例如动态磁化率对比（DSC）灌注和扩散（DWI））在两种肿瘤类型和位置之间的显着差异。