Beyond Mesial Temporal Sclerosis: Optimizing MRI Evaluation in Focal Epilepsy
Epilepsy is one of the most common neurologic disorders in the United States. The importance of accurately detecting structural causes of epilepsy cannot be overstated. MRI findings initially misdiagnosed as “lesion negative” may result in delayed definitive surgical treatment
and increased morbidity because patients with underlying structural lesions are more likely to be refractory to medical therapy. Under-reporting of pertinent MR imaging findings in epilepsy is due to either a failure of imaging to adequately depict the abnormality or an inability to recognize
the abnormality when present. The purpose of this article is to describe optimal epilepsy MR imaging and to review common focal epileptogenic lesions, with an emphasis on subtle abnormalities.
Learning Objective: Describe the sequences necessary to optimize detection of epileptogenic lesions on MRI and identify common focal epileptogenic lesions.
Learning Objective: Describe the sequences necessary to optimize detection of epileptogenic lesions on MRI and identify common focal epileptogenic lesions.
Keywords: AED = antiepileptic drug; AVM = arteriovenous malformation; DNET = dysembryoplastic neuroepithelial tumor; FCD = focal cortical dysplasia; FOV = field of view; HS = hippocampal sclerosis; IHI= ipsilateral hippocampal inversion; MCF = middle cranial fossa; SPECT = single-photon emission tomography
Document Type: Research Article
Publication date: June 1, 2013
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content