Evaluation Of AIS Prognosis Based On SWI Vein Analysis

Objective:To analyse the clinical and imaging factors of asymmetrical vein sigh（AVS）on susceptibility weighted imaging（SWI）in patients with acute ischaemic stroke（AIS）with different treatment modalities and to explore their clinical application in assessing the long-term prognosis of patients with AIS.Methods:Two hundred and fifteen patients with AIS attending Guoyao Dongfeng General Hospital between 2019.08 and 2021.12 were collected,and MRI plain,DWI,MRA and SWI were performed within 72 hours from onset to examination time,and the NIHSS score at admission was completed by the assessment of the neurologist,and the MRS score was assessed after 3 months of follow-up;the veins that were increased and thickened on SWI compared with the contralateral side were defined as AVS,They were divided into asymmetric medullary vein sign（AMVS）,which is located in the deep medulla,and asymmetrical cortical vein sign（ACVS）,which is located under the cortex,according to the location of the visualisation,and grouping them according to the display of SWI venous signs,and their imaging and clinical data were compared using statistical methods such as independent samples t-test,Kruskal-Wallis H-test and logistic regression analysis.The patients were divided into intravenous thrombolysis group and general treatment group,compared the connection between different venous signs and prognosis of the two groups separately.Results:A total of 215 patients were eventually included in this study,60 with ACVS+ and AMVS+,73 with ACVS+ and AMVS-and 82 with ACVS-and AMVS-.The differences between the three groups were statistically significant in the interval between the onset of the disease and the MR examination,admission NIHSS score,DWI-ASPECTS score,MRA-TIMI classification and treatment modality(p