This text/atlas details the practical applications of these MRI and CT imaging modalities to a wide range of neurodiagnostic problems. For each pathologic condition reviewed, leading radiologists and neuroradiologists: examine normal MRI and CT anatomy and pathologic findings; consider the types of diagnostic problems best resolved by MRI and CT; and establish the rationale for utilizing MRI and CT as the primary study - or for using both modalities as complementary studies.