CORRELATION BETWEEN CT SCAN AND EEG FINDINGS IN PARTIAL SEIZURES

Background: Epilepsy is a chronic disorder characterized by recurrent seizures. It also has a great variety of medical and psychosocial implications. Despite the different methodologies used, most studies gave incidence rates varying from 20 to 50 per 1,00,000. For the diagnosis of epilepsy apart from history and clinical examination other diagnostic tools like EEG and CT scan are employed. Aim of the study: To study clinical profile and correlation of EEG and CT findings in diagnosis of partial seizures. Study design: It is a hospital based prospective observational study. Methods: 50 patients with partial seizures presented to Department of Pediatrics and Neonatology, MIMS, Nellimarla were studied over a period of 12 months. Correlation between abnormal CT and EEG findings were studied in different age sub groups. Results: Out of 50 patients, 36% had both epileptiform discharges and focal lesions in CTscan brain. 4% patients had both normal EEG and CT scan brain. 40% patients had focal lesions in CTscan brain without epileptiform discharges. 20% patients had epileptiform discharges without focal lesions in CTscan brain. EEG sensitivity in detecting focal lesions about 72.4%. Conclusion: EEG can be used as screening method in diagnosis of partial seizures and is cost effective. CT scan is mandatory to know the underlying etiology.