Diagnostic testing of seizure disorders

Area of Science:

• Neurology
• Medical Imaging
• Neurophysiology

Background:

• Seizure disorder diagnosis relies heavily on patient history and physical exams.
• Electroencephalography (EEG) and magnetic resonance imaging (MRI) are crucial extensions for evaluating potential seizure disorders.
• Identifying epileptogenic lesions is key in seizure disorder management.

Purpose of the Study:

• To review the technical aspects of EEG and MRI in seizure disorder evaluation.
• To discuss common findings and potential challenges associated with EEG and MRI.
• To explore the utility of adjunctive tests in specific seizure disorder cases.

Main Methods:

• Review of technical considerations for electroencephalography (EEG).
• Review of technical considerations for magnetic resonance imaging (MRI).
• Discussion of findings and pitfalls for both EEG and MRI.

Main Results:

• EEG serves as an essential extension of the neurologic examination for seizure disorders.
• MRI is frequently required to detect lesions that may cause epilepsy.
• Adjunctive tests like ambulatory EEG, video/EEG, PET, SPECT, and serum evaluations are valuable in specific clinical scenarios.

Conclusions:

• EEG and MRI are indispensable tools in the comprehensive evaluation of patients with suspected seizure disorders.
• Understanding the technical nuances, common findings, and limitations of EEG and MRI improves diagnostic accuracy.
• A tailored approach incorporating adjunctive tests enhances the diagnostic yield for complex epilepsy cases.