Nontraumatic Neuroemergencies - II
Several clinical presentations require emergent neuroimaging to determine the cause of the neurological deficit and to institute appropriate therapy. Time is critical because neurons that are lost cannot be replaced. Generally, the clinical symptoms are due to ischemia, compression, or destruction of neural elements. The two primary imaging modalities for the central nervous system (CNS) are computed tomography (CT) and magnetic resonance imaging (MRI). CT is fast and can readily visualize fractures, hemorrhage, and foreign bodies. Otherwise, in patients who can cooperate for the longer imaging study, MRI provides better contrast resolution and has higher specificity for most CNS diseases. The five major categories of nontraumatic neuroemergencies are discussed below.
KeywordsHerpes Simplex Encephalitis Obstructive Hydrocephalus Epidural Abscess Homonymous Hemianopsia Clinical Magnetic Resonance Imaging
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- 3.Chepuri NB, Perl II J, Masaryk TJ, Turski PA (2006) Aneurysms and central nervous system vascular malformations. In: Edelman, Hesselink, Zlatkin, Crues (eds), Clinical magnetic resonance imaging. 3rd edn. Saunders-Elsevier, Philadelphia, pp 1414–1453Google Scholar
- 5.Kanamalla US, Ibarra RA, Jinkins JR (2000) Imaging of cranial meningitis and ventriculitis, Neuroimaging Clin N Am 10:309–332Google Scholar
- 6.Karampekios S, Hesselink JR (2006) Infectious and inflammatory diseases. In: Edelman, Hesselink, Zlatkin, Crues (eds) Clinical magnetic resonance imaging. 3rd edn. Saunders-Elsevier, Philadelphia, pp 1248–1286Google Scholar