Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario.

ABSTRACT:

Objectives

The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise.

Methods

We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous).

Results

Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overal

SUBMITTER: Pfaff JAR 

PROVIDER: S-EPMC8660718 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature