FIG 1. Comparison of MR images obtained at the inferior border of a glioblastoma multiforme. Although the arterial structures in the sylvian fissure (arrowheads) are identified at both 1.5- and 8-T imaging, the smaller venous structures (unlabeled arrows) are depicted only on the 8-T image. These venous structures represent draining veins from the tumoral bed. A indicates anterior; CP, choroid plexus within the trigone of the left lateral ventricle; L, lateral; M, medial; P, posterior; VOG, vein of Galen; and 3V, third ventricle.

A, Image obtained at 8 T (714/10, 23° flip angle, 900 x 900 matrix, 2-mm section thickness, 20-cm FOV).

B, FSE T2-weighted image obtained at 1.5 T (5650/104, 512 x 512 matrix, 3-mm section thickness, 20-cm FOV).

C, Gadolinium-enhanced magnetization-transfer image obtained at 1.5 T (616/20, 256 x 256 matrix, 5-mm section thickness).