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Insights into Imaging
Fig. 5 | Insights into Imaging

Fig. 5

From: Current concepts in imaging and endovascular treatment of acute ischemic stroke: implications for the clinician

Fig. 5

A 67-year woman was admitted with a wake-up stroke. Clinically, she presented with severe right MCA infarct symptoms (NIHSS 14). Since the time of onset of the stroke could not be determined, MRI was performed. The diffusion-weighted trace image (a) shows an infarct core with diffusion restriction in the right basal ganglia. The parametric MR perfusion maps (b, cerebral blood volume (CBV) and c, time to peak (TTP)) show a mismatch indicating a large penumbra, i.e., area of potentially salvageable brain tissue. Subsequently, a successful mechanical thrombectomy was performed and the patient had a substantial recovery (NIHSS 3). Follow-up MRI on day 3 after treatment (d) shows that the core infarct remains limited within the right basal ganglia with sparing of the insular, frontal, and parietal cortex

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