Diffusion tensor analysis of peritumoral edema using lambda chart analysis indicative of the heterogeneity of the microstructure within edema.

摘要: Object. Histopathological studies indicate that cerebral edema associated with tumors (peritumoral edema) does not represent a single pathophysiological or clinical entity. In this study the authors investigated peritumoral by performing lambda chart analysis (LCA), noninvasive technique can be used to make visible and analyze apparent water diffusivity in tissues vivo, assessed utility of LCA differentiating high-grade gliomas from nonglial tumors. Methods. The characteristics four tumor groups—12 gliomas, five low-grade 11 metastatic tumors, 15 meningiomas—were 43 patients magnetic resonance imaging aid 3-tesla system. all groups, exhibited greater trace values reduced anisotropy compared normal white matter. Edema had significantly higher than ...