Fig 7. Hypoperfused glioma on ASL. Coronal FLAIR (upper left) and axial T2 (upper right) images demonstrate a high-signal-intensity mass in the left thalamus (white arrows). Minimal enhancement is seen after contrast (lower left), with corresponding low perfusion on the CBF map (white arrow, bottom right). The rim of normal perfusion (arrowheads) corresponds to the residual normal tissue in the adjacent thalamus.