1. A 37-year-old man with right frontal low-grade astrocytoma.
A 37-year-old man with right frontal low-grade astrocytoma. A series of axial postcontrast T1-weighted images of the brain demonstrate a nonenhancing right frontal insular mass. The diffusion tensor tractogram, which has been coregistered and overlaid onto the contrast-enhanced T1-weighted images, demonstrates corticospinal tract (white marks) that is displaced but not invaded by the tumor.
S. Cha AJNR Am J Neuroradiol 2006;27:
©2006 by American Society of Neuroradiology