Abstract #4592

Arterial transit artifact could prognose stroke patients beyond 24 hours from last known well

Di Wu¹, Shun Zhang², Weiyin Vivian Liu³, and Wenzhen Zhu⁴

¹Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China, ²Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China, ³GE Healthcare, Beijing, China, Beijing, China, ⁴Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China

Synopsis

The study aimed to assess the correlation of arterial transit artifact (ATA) with clinical outcomes and collateral circulation status in stroke patients beyond 24 hours from last known well. ATA is assessed by 3-dimentional pseudo-continuous ASL (3D-pCASL), collateral status by magnetic resonance angiography (MRA) using a grading system from 0 to 3, and clinical outcomes by 3-month modified Ranking Scale (3m-mRS). ATA was present in about half of the enrolled patients, most of whom had large artery disease. Though the correlation between ATA and the degree of collateral supply was not statistically significant, ATA could predict the favorable clinical outcomes.

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