Assessment of Hyperacute Cerebral Ischemia Using Laser Speckle Contrast Imaging

Document Type

Article

Publication Date

11-1-2024

Abstract

Background: Accurate diagnosis of cerebral ischemia severity is crucial for clinical decision making. Laser speckle contrast imaging-based cerebral blood flow imaging can help assess the severity of cerebral ischemia by monitoring changes in blood flow. Method: In this study, we simulated hyperacute ischemia in rats, isolating arterial and venous flow-related signals from cortical vasculature. Pearson correlation was used to examine the correlation between damaged vessels. Granger causality analysis was used to investigate causality correlation in ischemic vessels. Results: Resting state analysis revealed a negative Pearson correlation between regional arteries and veins. Following cerebral ischemia induction, a positive artery-vein correlation emerged, which vanished after blood flow reperfusion. Granger causality analysis demonstrating enhanced causality coefficients for middle artery-vein pairs during occlusion, with a stronger left-right arterial effect than that of right-left, which persisted after reperfusion. Conclusions: These processing approaches amplify the understanding of cerebral ischemic images, promising potential future diagnostic advancements.

Identifier

85208771750 (Scopus)

Publication Title

Brain Connectivity

External Full Text Location

https://doi.org/10.1089/brain.2024.0026

e-ISSN

21580022

ISSN

21580014

PubMed ID

39291777

First Page

459

Last Page

470

Issue

9

Volume

14

Grant

NSFC82250410380

Fund Ref

National Natural Science Foundation of China

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