Chronic seizure disorders: contribution of MR imaging when CT is normal.
One hundred consecutive patients with complex partial seizures were studied by magnetic resonance (MR) imaging and computed tomography (CT). Thirty-four patients had seizures of more than 5 years' duration, yet neurologic examinations and previous pre- and postinfusion CT scans had been normal. MR imaging demonstrated surgical lesions of potentially therapeutic significance in four of these 34 patients. Two patients underwent surgery with removal of a thrombosed arteriovenous malformation and a glioma. Although CT has been found to detect structural abnormalities, its yield of therapeutically significant abnormalities has been low.
D000293:Adolescent; D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis; D002648:Child; D005260:Female; D005910:Glioma / Q000175:diagnosis; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis; D002542:Intracranial Embolism and Thrombosis / Q000175:diagnosis; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D012640:Seizures / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013702:Temporal Lobe; D014057:Tomography, X-Ray Computed