At-risk brain tissue identified with arterial spin labeling in neurotuberculosis.

A 13-year-old immunocompromised girl developed neurotuberculosis. Arterial spin labeling technique indicated areas of hypoperfusion in the vascular territories of the left posterior cerebral artery and superior cerebellar artery without restricted diffusion, suggesting early tuberculous arteritis. MR angiography confirmed vascular involvement, so adjunctive anticoagulant therapy was initiated. Complete resolution of arterial spin labeling findings was observed 1 month later. This documents early tuberculous vasculopathy revealed by arterial spin labeling in a child with neurotuberculosis. Since there may be a paucity of clinical symptoms in the evolution of arteritis in neurotuberculosis, arterial spin labeling may help indicate early hypoperfusion and alert for modification of treatment before irreversible vascular damage occurs.