Abnormal radionuclide cerebral angiograms and scans due to seizures.

The effect of recent seizures on the brain scan was determined in a retrospective study of patients who had had seizures. All patients who underwent brain scanning within eight days of seizures and who did not have a specific intracranial lesion were included. The 99mTc-pertechnetate cerebral angiogram and/or delayed scan was abnormal in 73% of 22 patients. The data suggest that if seizures occur within six days of the brain imaging, the image is likely to be abnormal.