Correlation of MRI and EEG in Diagnosing of Epilepsy in Khartoum City

Abstract

Epilepsy is a central nervous system (neurological) disorder in which brain activity becomes abnormal, causing seizures or periods of unusual behavior, sensations, and sometimes loss of awareness. The study aimed to evaluate the correlation of both EEG and MRI FLAIR in diagnostic of epilepsy in the Khartoum City. Magnetic resonance imaging (MRI) and electroencephalography (EEG) techniques were evaluated for each patient. A total of 55 patients in Alzaitoona Special Hospital and Modern Medical Center during the period spanned from July 2018 until December 2018 are studied. The study shown that, the most frequent type of epilepsy in EEG finding was generalized that had the percentage of about(76.4%). The study also characterized the brain in a patient with epilepsy, it was found that the number of patients diagnosed as lesion and brain atrophy was (21 and 10) respectively, and found that there was a significant chi square relation between them in MRI at p<0.01. Temporal lobe was the most common location of lesion in MRI (34.5%). Cystic lesion followed by Ischaemia (23.8% and 14.3% respectively) were the most common lesions type, a significant relationship was observe between lesions location and type in MRI at p<0.01. Study also found that all patients diagnosed with ventricular system dilatation, had lesions and increasing in brain volume at significant chi square at p<0.01 for both variables. The study concluded that, both MRI flair and EEG should be used in diagnosis of epilepsy they had complementarity role; MRI detected the cause of epilepsy while EEG discovered the first onset of the disease. The study recommend to use specialized protocols instead of using routine scanning protocol include Magnetic Resonance Spectroscopy (MRS), functional MRI (fMRI) and FDG-PET scan for further diagnosis or when MRI is normal or showed nonspecific findings.