Collateral assessment on magnetic resonance imaging/angiography up to 30 hours after stroke onset.

ABSTRACT:

Purpose

We aimed to validate hyperintense vessel sign (HVS) on FLAIR imaging or posterior cerebral artery (PCA) laterality on MR angiography beyond 4.5 hours after stroke onset.

Materials and methods

Data from acute ischemic stroke patients with internal carotid or middle cerebral artery occlusion who underwent CT perfusion imaging at baseline, follow-up MR perfusion imaging and angiography within 30 hours after stroke, without effective recanalization on follow-up imaging, were analysed retrospectively. Patients were separately classified as high or low HVS (>5 or ≤5 slices of HVS), and PCA laterality positive or negative group. We compared core and penumbra volumes at follow-up imaging and neurological outcomes between high or low HVS group, and between PCA laterality posi

SUBMITTER: Tomari S 

PROVIDER: S-EPMC11371231 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature