Ninety-eight children with chronic seizure disorders were studied by computerized axial tomography (CAT). Structural abnormalities were identified in 30% of these children. The greatest incidence of abnormalities was in children with focal motor seizures (43%) and in those whose EEG demonstrated focal slowing together with focal spikes (38%). The most common abnormality was either focal or generalized atrophy (13%). Only about 2% of the abnormalities discovered by CAT were potentially of therapeutic significance. However, the demonstration of a static process, or the finding of a normal CAT, may be quite helpful to the family and physician in certain children with chronic seizure disorders.
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Bachman et al. (1976) studied this question.