Lacunar Infarction: (Left) Diffusion-weighted MRI; (Right) Flair axial MRI. Note the numerous white matter lesions in the Flair image, consistent with small vessel disease. The new stroke is not well ...

A 54 year-old man with a history of hypertension developed weakness affecting the left face, arm and leg. On examination, he had a pure motor hemiparesis. The admitting diagnosis was lacunar stroke.

Deep brain stimulation (DBS) is a widely used surgical treatment for neurological disorders such as Parkinson's disease, essential tremor, and obsessive–compulsive disorder. The procedure involves ...