Correlation Between the Localization of the Epileptogenic Zone and Magnetic Resonance Imaging in Focal Epilepsy
Abstract number :
1.236
Submission category :
Year :
2000
Submission ID :
1393
Source :
www.aesnet.org
Presentation date :
12/2/2000 12:00:00 AM
Published date :
Dec 1, 2000, 06:00 AM
Authors :
Damian E Consalvo, Walter H Silva, Silvia A Oddo, Brenda Giagante, Pablo Salgado, Silvia S Kochen, Roberto E Sica, CONICET, FEMIEN Fdn, Ramos Mejia Hosp, Buenos Aires, Argentina; CONICET, Ramos Mejia Hosp, Buenos Aires, Argentina; Ramos Mejia Hosp, Bue
RATIONALE: Magnetic Resonance Imaging (MRI) is the method of choice to detect epileptogenic lesions. We correlated their findings with the epileptogenic zone (EZ) established on the basis of clinical and EEG data. METHODS: We selected 400 clinical histories of patients who had a MRI done and we analyzed, retrospectively, their ictal semiology, EEG and response to treatment. RESULTS: They were classified in 3 groups: A) Temporal lobe epilepsy, B) Frontal and C) Parieto-Occipital. We included 155 patients: Group A) 68 cases (43.9%), 28 men (41.1%), age average 32 ? 11.2 years, abnormal MRI in 44 (64.7%), refractory 48 (70.5%). Group B) 68 cases (43.9%), 38 men (55.8%), age average 30 ? 14.7 years, abnormal MRI in 26 (38.2%), refractory 30 (44.1%). Group C) 19 cases (12.2%), 13 men (68.4%), age average 27 ? 11.1 years, abnormal MRI in 11 (57.8%), refractory 12 (63.1%). CONCLUSIONS: There were higher possibilities of detecting lesions that correlate with EZ in Temporal lobe epilepsy than in Frontal or Parieto-Occipital. The chances to find abnormalities on the MRI were 5 times higher in refractory than in non-refractory patients.