Theoretical concepts and prior clinical studies justify the interest in applying high-resolution, ultra high-field MRI as a tool to evaluate detailed brain anatomy and physiology in children with focal epilepsy. Most studies comparing the diagnostic yield of 3T versus 1.5T imaging in detecting structural lesions in patients with focal epilepsy reached positive conclusions concerning the rates of newly detected lesions at 3T Very few comparative studies have investigated the diagnostic yield of 7T with respect to conventional MRI, however these included both examinations performed at 1.5T and at 3T.