Prediction of infarction and reperfusion in stroke by flow- and volume-weighted collateral signal in MR angiography.

ABSTRACT:

Background and purpose

In proximal anterior circulation occlusive strokes, collateral flow is essential for good outcome. Collateralized vessel intensity in TOF- and contrast-enhanced MRA is variable due to different acquisition methods. Our purpose was to quantify collateral supply by using flow-weighted signal in TOF-MRA and blood volume-weighted signal in contrast-enhanced MRA to determine each predictive contribution to tissue infarction and reperfusion.

Materials and methods

Consecutively (2009-2013), 44 stroke patients with acute proximal anterior circulation occlusion met the inclusion criteria with TOF- and contrast-enhanced MRA and penumbral imaging. Collateralized vessels in the ischemic hemisphere were assessed by TOF- and contrast-enhanced MRA using 2 methods: 1)

SUBMITTER: Ernst M 

PROVIDER: S-EPMC7965659 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature