Effects of T2-FLAIR sequence under different imaging conditions on the appearance of ivy sign in patients with moyamoya disease
10.7644/j.issn.1674-9960.2025.04.009
- VernacularTitle:不同成像条件下T2-FLAIR序列对烟雾病患者常春藤征显示的影响
- Author:
Wenxue TIAN
1
;
Shen GAO
;
Xiangyun RONG
;
Zhaoxue ZHANG
;
Jianming CAI
;
Fugeng SHENG
;
Hongtao ZHANG
Author Information
1. 解放军总医院第五医学中心放射诊断科,北京 100071
- Keywords:
moyamoya disease;
time of echo;
echo train length;
T2-fluid attenuated inversion recovery
- From:
Military Medical Sciences
2025;49(4):303-306
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of T2-fluid attenuated inversion recovery(T2-FLAIR)sequence on the appearance of ivy sign in patients with moyamoya disease under different imaging conditions.Methods Coronal T2-FLAIR scans were performed in 51 consecutive adult patients with moyamoya disease who had not undergone surgery and had their first visit to this hospital between March and July of 2024.According to the scanning conditions,the patients were divided into 19 and 14 of the echo train length in two groups,and 103,144,and 195 ms of the time of echo(TE)in three groups,respectively.The left and right cerebral hemispheres and whole brains were scored according to the cerebral vascular anatomy,and scores of the ivy sign of left and right cerebral hemispheres and whole brain were compared.Results There was no statistical significance in the ivy sign scores of right and left cerebral hemispheres and whole brain between the two groups with 19 and 14 of the echo train length(P＞0.05).Comparison of ivy sign scores in right and left cerebral hemispheres and whole brain was statistically significant among the three groups of TE at 144,103 and 195 ms(P＜0.05).Conclusion The best appearance of ivy sign in patients with moyamoya disease is seen under the condition of TE at 195 ms,so appropriately extending the TE time is helpful for ivy sign display.
