Discrepancy between perfusion- and diffusion-weighted images in ischemic stroke: A case report.

Rationale: With the development of multi-slice computed tomography (CT) technology, perfusion CT angiography (p-CTA) is now widely used for the diagnosis of acute cerebral infarction. Although p-CTA has the advantage of distinguishing between an ischemic penumbra and an infarct core, more research is needed with respect to its clinical use.

Patient Concerns: A healthy 36-year-old man experienced sudden dizziness while swimming.