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Mar 4, 2024 · CT perfusion may overestimate infarct core on admission, especially in the early time window of a stroke, by predicting lesion in areas that will not show infarct on follow-up imaging. This mismatch is known as a g host infarct core 8. Most CT perfusion protocols are centered upon the basal ganglia and supra-ganglionic level.
Feb 3, 2020 · In this review, we give an overview of computed tomography perfusion (CTP) and perfusion magnetic resonance imaging (MRP) in acute ischemic stroke and discuss technical properties, clinical use, and pitfalls.
Oct 22, 2018 · Specifically, CTP could be obtained selectively to (1) assess mismatch status in patients with a large vessel occlusion on CTA who may be candidates for endovascular therapy in the delayed time-window, (2) rule-in or rule-out ischemia when the clinical diagnosis is uncertain, or (3) clarify if there is a large vessel occlusion when the CTA resul...
Feb 9, 2023 · Automated perfusion imaging identifies the hypoperfused brain area and aims to distinguish the reversible (penumbra with CBF <40 mL/100 g per minute) from the irreversible (infarct-core with CBF <20 mL/100 g per minute) ischemic brain volume.
Jul 14, 2021 · Rudilosso S, Urra X, San Román L, et al. Perfusion deficits and mismatch in patients with acute lacunar infarcts studied with whole-brain CT perfusion. AJNR 2015; 36:1407–1412 Crossref
C−E, CT perfusion demonstrates asymmetric perfusion with relatively increased CBV (C), increased CBF (D), and decreased MTT (E) in this region (arrows) compared with the contralateral brain. This is consistent with postischemic hyperperfusion.
Mar 10, 2016 · Increasingly, perfusion computed tomography CT (PCT) is performed for physiological evaluation of the brain parenchyma in the setting of cerebral ischemia, and this technique may be used to determine volume of core infarction and of the penumbra.
