Mar 2, 2025 · Aging ischemic strokes can be important in a number of clinical and medicolegal settings. Both CT and MRI can help in determining when a stroke occurred as imaging features evolve in a reasonably predictable fashion. There is substantial heterogeneity in the terminology denoting time from onset.

Mar 26, 2025 · A CT stroke protocol is obtained in the emergency setting to rapidly diagnose and quantify patients presenting with probable ischemic strokes and to enable appropriate urgent management (e.g. endovascular clot retrieval or intravenous thrombolysis).

Feb 25, 2024 · This is a basic article for medical students and other non-radiologists Ischemic stroke is a clinical diagnosis where an acute neurological deficit follows brain infarction.

Apr 26, 2023 · A stroke is a clinical diagnosis that refers to a sudden onset focal neurological deficit of presumed vascular origin. Stroke is generally divided into two broad categories 1,2: ischemic stroke (87%) hemorrhagic stroke (13%) Terminology The term "stroke" is ambiguous and care must be taken to ensure that precise terminology is used.

Mar 4, 2024 · The key to interpreting CT perfusion in the setting of acute ischaemic stroke is understanding and identifying the infarct core and the ischaemic penumbra, as a patient with a small core and a large penumbra is most likely to benefit from reperfusion therapies.

Case Discussion These sequential CTs demonstrate a number of important aspects in stroke imaging. Initially the signs may be subtle or entirely absent on CT. The hyperdense MCA and insula ribbon are two early signs of stroke. CT is still the first imaging modality in …

Mar 14, 2025 · As such these features are discussed in the generic article: cerebral infarction. There are however certain features specific to middle cerebral artery infarct, and these are discussed below. For both CT and MRI it is worth dividing the …

May 1, 2024 · Brainstem stroke syndromes, also known as crossed brainstem syndromes, refer to a group of syndromes that occur secondary to lesions, most commonly infarcts, of the brainstem.

Feb 27, 2025 · Appearances of MRI are as expected for an ischaemic stroke, demonstrating restricted diffusion on DWI / ADC sequences. Sequences susceptible to signal drop out due to blood products (especially SWI) are useful as they are more sensitive than CT to early haemorrhage and may help direct therapy (e.g. withhold thrombolytic therapy) although they ...

Feb 8, 2024 · Contrast staining primarily in the setting of ischemic stroke, most frequently post endovascular clot retrieval but also following intravenous thrombolysis 1-7.