Automated collateral assessment restricted to the hypoperfused area for distal vessel occlusions in ischemic stroke.

ABSTRACT:

Objectives

This study aims to: (1) develop and evaluate a quantitative assessment of collateral status in the downstream area of an occluded intracranial artery in acute ischemic stroke and compare this method to middle cerebral artery (MCA)-based assessment; (2) determine the agreement between the automated occlusion-downstream area collateral score (ODACS) and expert raters' assessments, and compare this to inter-rater agreement.

Methods

Patients from MR CLEAN-NO IV and MR CLEAN Registry with a proximal M1, distal M1, or M2 occlusion were included. Using the hypoperfused area from CT perfusion (CTP) as a proxy for the occlusion-downstream territory and automated vessel segmentations from CT angiography (CTA), ODACS is calculated as the vessel volume ratio between downstrea

SUBMITTER: de Vries L 

PROVIDER: S-EPMC12417235 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature