胶质瘤的最主要特征是弥漫浸润和具有复制合成肿瘤生长、增生所需要的血管网状结构的能力。血管增生程度不仅决定它的生物学侵袭性,还是病理分级的一个重要特征。MR灌注成像可通过静脉注入对比剂,动态扫描兴趣区,观察T_2~*的脑血流动力学变化,获得病变区及正常脑实质的血管结构特征,可为临床提供更为精确的诊断信息。 The main features of glioma is diffuse infiltration and has the ability to replicate the vascular network required for the synthesis of tumor growth and proliferation. The degree of vascular proliferation not only determines its biological invasiveness, but also an important feature of the pathological grade. MR perfusion imaging through intravenous contrast agents, dynamic scanning of interest area, observed T_2 ~ * cerebral hemodynamic changes, diseased area and normal brain parenchyma vascular structure characteristics, can provide more accurate clinical diagnosis information.