Which statement about MRI findings in seizure evaluation is true?

• A. An MRI can determine the focal origin of the seizure.
• B. An MRI detects only tumors.
• C. An MRI is not useful for seizures.
• D. An MRI immediately cures seizures.

Answer: (A)

The key idea is that MRI is used to map brain structure and identify abnormalities that can pinpoint where seizures originate. A high-resolution MRI can reveal structural lesions in regions commonly involved in focal epilepsy, such as hippocampal sclerosis in temporal lobe epilepsy, cortical dysplasia, tumors, or vascular malformations. This information helps determine the focal origin of the seizures and guides treatment decisions, including surgical planning. MRI is not limited to detecting tumors; it detects a range of structural changes that may underlie seizures. It does not cure seizures immediately—its role is diagnostic and planning-oriented, often used with EEG and other tests. In some cases no lesion is seen despite focal onset, but the imaging still contributes to evaluation and management.