This review discusses the magnetic resonance imaging (MRI) features of
direct human immunodeficiency virus (HIV) brain infection as well as
other common opportunistic infections and neoplasms in the acquired im
munodeficiency syndrome (AIDS) population. MRI utilizing T2-weighted i
mages is an ideal method for screening. Gadolinium (Gd) should be admi
nistered to further characterize positive or questionable studies or w
hen meningeal disease is suspected.