Brain MRI in Epilepsy
Magnetic Resonance Imaging (MRI) is the primary neuroimaging tool for patients with epilepsy. It helps identify structural brain abnormalities that may trigger or maintain seizures.
Why MRI Is Important in Epilepsy
- After a first seizure, MRI is used to exclude serious underlying causes such as tumors, vascular malformations, stroke, or inflammatory lesions.
- Seizure classification. Structural abnormalities may indicate focal epilepsy, even when seizures appear generalized clinically.
- Surgical evaluation. MRI helps determine whether a resectable lesion is present.
- Preoperative planning. It defines lesion location and surgical approach.
Structural Changes Detected on MRI
Neocortical Gliosis
Gliosis develops after trauma, infection, inflammation, or ischemia and may form an epileptogenic focus.
Brain Tumors
Although relatively uncommon, certain tumors are associated with focal epilepsy.
Mesial Temporal Sclerosis
A common cause of drug-resistant temporal lobe epilepsy, characterized by hippocampal atrophy and signal changes on MRI.
Cortical Malformations
Developmental abnormalities such as cortical dysplasia are frequent causes of epilepsy, particularly in children and young adults.
Advanced MRI protocols significantly improve the detection of subtle epileptogenic lesions.