The electroencephalographic (EEG) and cranial computed tomographic (CCT) findings of 41 children with hemiplegic cerebral palsy were analyzed. There was a positive correlation between EEG abnormalities and the affected side of the body in 25 (61 ), while there was a positive correlation between CCT abnormalities and the affected side of the body in 37 (90). In 24 cases (59), there was a positive correlation between EEG and CCT laterality. However, in 13 of the patients with dominant abnormalities in the cerebral hemisphere contralateral to the palsy, EEGs did not show the same laterality as the CCT. In two of these cases, dominant seizure discharges were present on the side opposite to the CCT abnormalities. CCT was more useful than EEG in determining the side of maximal brain damage in hemiplegic cerebral palsy (p < 0.01).
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