Neurología : publicación oficial de la Sociedad Española de Neurología
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Both single photon emission computed tomography (SPECT) and positron emission tomography (PET) are helpful in the practice of neurology. Ictal SPECT is useful to determine the origin of focal seizures in the pre-surgical evaluation. ⋯ Given its higher resolution and some other factors, PET is more useful in the evaluation of brain tumors, dementia and the parkinsonian syndromes. It is also useful in the presurgical evaluation of epilepsy.
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Multiple sclerosis is the most important disabling neurological disease in young adulthood in our environment. However, its etiology remains unknown. It has been proposed that multiple sclerosis is caused by an interaction of genetic and environmental factors. In particular, Epstein-Barr virus infection could play a fundamental role in the pathophysiology of multiple sclerosis. ⋯ Based on the published evidence, Epstein-Barr virus infection can be considered to have a causal role in the etiology of multiple sclerosis. Further research should be conducted to elucidate the mechanisms underlying this association and to assess its potential for multiple sclerosis prevention and treatment.