2025年1月19日 · CT. Non-contrast CT of the brain remains the mainstay of imaging in the setting of an acute stroke. It is fast, inexpensive and readily available. Its main limitation, however, is the limited sensitivity in the acute setting.

2023年4月26日 · 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.

2023年3月23日 · A CT stroke protocol, often referred to as a code stroke CT, has become a fairly widespread and standardized approach to imaging patients presenting with acute neurological symptoms that may represent cerebral infarction or cerebral hemorrhage (together grouped under the vague term stroke).

2024年3月4日 · The key to interpreting CT perfusion in the setting of acute ischemic stroke is understanding and identifying the infarct core and the ischemic penumbra, as a patient with a small core and a large penumbra is most likely to benefit from reperfusion therapies.

2024年2月13日 · CT. hypoattenuation, somewhat, higher than CSF. volume loss. often associated with gliosis and Wallerian degeneration. MRI. Follows CSF signal on all sequences including FLAIR. T1: low signal T2: high signal, attenuating fully on …

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2023年4月15日 · Epidemiology. ACA territory infarcts are rare, comprising ~2% of ischemic strokes 1,2.. Clinical presentation. ACA stroke syndrome presents as 1-3:. dysarthria, aphasia; unilateral contralateral motor weakness (leg/shoulder > arm/hand/face)

2024年9月7日 · The Alberta stroke program early CT score (ASPECTS) 1 is a 10-point quantitative topographic CT scan score used for middle cerebral artery (MCA) stroke patients. It has also been adjusted for the posterior circulation (see below).

2024年5月9日 · CT, which is the main brain imaging modality in hyperacute stroke, unfortunately, has a known limited sensitivity to assess strokes involving the posterior circulation, especially in the posterior fossa structures 1-3. MRI is the most sensitive.