Ellie Song-Yi Kwak MD, Abstract Co-Author: Nothing to Disclose

Daniel S. Chow MD, Presenter: Nothing to Disclose

Mariel G. Kozberg BS, Abstract Co-Author: Nothing to Disclose

Akash D. Shah MD, Abstract Co-Author: Nothing to Disclose

Angela Lignelli-Dipple MD, Abstract Co-Author: Nothing to Disclose

Seizure disorders are common and 4-5% of individuals will experience at least one seizure in their lifetime, of which a fraction will suffer intractable epilepsy. In this subset, MR evaluation with dedicated seizure protocols can allow for detection of an epileptogenic cause in roughly 80% of cases. However, lesions are often subtle and may be missed if the radiologist does not know where to look. For this reason, a systemic approach in the evaluation of epilepsy must be utilized to adequately evaluate these patients. The purpose of this exhibit is to Review MR imaging protocol used in evaluation of patients with intractable epilepsy. Provide an anatomic organization for causes of intractable epilepsy for the practicing radiologist and trainee. A quiz will be provided at the end of the exhibit.  

Background and epidemiology of epilepsy Review of MR imaging protocols used for epilepsy evaluation (including pros and cons of sequences) Anatomical based review of intractable epilepsy a. Hippocampus (i.e. mesial temporal sclerosis, encephalitis) b. Cortex: (i.e. focal cortical dysplasia, encephalotrigeminal angiomatosis) c. Periventricular: (i.e. heterotopia, subependymal nodules in tuberous sclerosis) d. Miscellaneous: (i.e. epileptogenic tumors, cavernous hemangioma) Post quiz

http://abstract.rsna.org/uploads/2014/14004473/14004473_6h19.pdf

Kwak, E, Chow, D, Kozberg, M, Shah, A, Lignelli-Dipple, A, Knowing Where to Look: Organized Anatomic Approach to Evaluating MR Images for Patients with Intractable Epilepsy.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14004473.html