With the exception of herpes simplex virus encephalitis type 1 involving preferentially limbic structures of the brain the imaging features of viral encephalitis are mostly unspecific. Typical features of viral encephalitis are vasogenic brain oedema and swelling, variable contrast enhancement of the involved structures and possibly haemorrhage. The major task of the neuroradiologist is to differentiate viral encephalitis from other noninflammatory entities such as neoplastic diseases or ischaemia.
KeywordsHerpes Zoster Progressive Multifocal Leukoencephalopathy Progressive Multifocal Leukoencephalopathy Magnetization Transfer Ratio Herpes Simplex Virus Encephalitis
- Falcone S, Post MJ (2000) Encephalitis, cerebritis, and brain abscess: pathophysiology and imaging findings. Neuroimag Clin N Am 10(2):333–353Google Scholar
- Hähnel S, Storch-Hagenlocher B, Seitz A (2006) Infectious diseases of the brain: imaging and differential diagnosis. Radiologie Up2Date 3:207–234 [in German]Google Scholar
- Weber W, Henkes H, Felber S et al (2000) Diagnostic imaging in viral encephalitis. Radiologe 40 (11):998– 010 [in German]Google Scholar