A comparative study of asymmetrical prominent veins sign in stroke based on susceptibility maps and phase maps
10.3969/j.issn.1002-1671.2025.10.002
- VernacularTitle:基于磁敏感图和相位图对脑卒中不对称突出静脉征的对照研究
- Author:
Yongfang YIN
1
;
Yan LIANG
1
;
Yuhuan WANG
1
;
Hao FANG
1
;
Haibo LIU
1
;
Yanling ZHAO
1
Author Information
1. 吉林省人民医院放射科,吉林 长春 130000
- Publication Type:Journal Article
- Keywords:
susceptibility weighted imaging;
corrected phase image;
acute ischemic stroke;
collateral circulation;
asymmetrical prominent veins sign
- From:
Journal of Practical Radiology
2025;41(10):1600-1603
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the value of the minimum intensity projection(minIP)images generated by post-processing of susceptibility weighted imaging(SWI)and corrected phase image(CPI)in evaluating the asymmetrical prominent veins sign(APVS)in acute ischemic stroke.Methods A retrospective analysis was conducted on 86 patients with acute ischemic stroke.Group A underwent conventional SWI reconstruction to generate minIP images,while group B used CPI for re-reconstruction to produce minIP images.Both groups used the same scanning method but different post-processing techniques to generate two sets of images,with each group consisted of 86 patients.Two deputy chief physicians of imaging diagnostics scored subjectively with a double-blind 5-point method to compare the ability of the two groups to display APVS and analyze the display rate of APVS.Results The subjective scores of group B were significantly higher than those of group A,with a statistically significant difference(P<0.05).The display rates of APVS in groups A and B were 67.44%and 73.26%respectively.Group B had a higher display rate of APVS below the tentorium cerebelli than above it.Conclusion The minIP images generated by CPI post-processing can achieve the effects similar to phase difference enhanced imaging(PADRE),and is superior to SWI reconstruction method in displaying APVS.It can be used as a supplementary post-processing method when acute stroke shows poor APVS,which has practical clinical application value and can provide more imaging basis for clinical practice.
