What is the purpose of advanced imaging in acute stroke?

What is the purpose of advanced imaging in acute stroke?

• A. To identify candidates for mechanical thrombectomy or pinpoint cause of hemorrhage
• B. To measure blood pressure
• C. To evaluate heart rhythm
• D. To assess skin perfusion

Answer: (A)

Advanced imaging in the acute stroke setting is used to map brain tissue and vessels so decisions about urgent treatment can be made precisely. It shows whether there is a large vessel occlusion that could be opened with mechanical thrombectomy, and it helps distinguish tissue that is still at risk from tissue that has already infarcted. Techniques like CT angiography or MR angiography identify the blocked artery, while CT perfusion or MR perfusion estimate the penumbra versus the core infarct, refining who can benefit from reperfusion therapy and when. This imaging can also help reveal the cause of a hemorrhage (for example, an aneurysm or vascular malformation) and guide emergency management. Other options—such as measuring blood pressure, evaluating heart rhythm, or assessing skin perfusion—are important in stroke care but are not the imaging-based methods used to determine suitability for thrombectomy or to pinpoint hemorrhage sources.

Advanced imaging in the acute stroke setting is used to map brain tissue and vessels so decisions about urgent treatment can be made precisely. It shows whether there is a large vessel occlusion that could be opened with mechanical thrombectomy, and it helps distinguish tissue that is still at risk from tissue that has already infarcted. Techniques like CT angiography or MR angiography identify the blocked artery, while CT perfusion or MR perfusion estimate the penumbra versus the core infarct, refining who can benefit from reperfusion therapy and when. This imaging can also help reveal the cause of a hemorrhage (for example, an aneurysm or vascular malformation) and guide emergency management.

Other options—such as measuring blood pressure, evaluating heart rhythm, or assessing skin perfusion—are important in stroke care but are not the imaging-based methods used to determine suitability for thrombectomy or to pinpoint hemorrhage sources.