Imaging features of acute ischaemic stroke

The importance of quick door-to-needle times for patients with focal cerebral ischaemia who are candidates for thrombolysis, and the emergence of mechanical thrombectomy as an effective treatment for large vessel occlusion ischaemic stroke, underlines the importance of early imaging and timely intervention. In this article we cover the main imaging modalities, including computed tomography (CT), CT angiography, magnetic resonance imaging, digital subtraction angiography and perfusion imaging.