3.0T 3D fast imaging employing steady state acquisition with small flip angle for detecting fetal spinal dysplasia
10.13929/j.issn.1003-3289.2024.12.026
- VernacularTitle:3.0T小翻转角3D快速稳态进动成像显示胎儿脊柱发育畸形
- Author:
Qian CAO
1
;
Hongyu YIN
1
;
Xia CHEN
1
;
Kun ZHANG
1
;
Shiqi WANG
1
;
Min KANG
1
Author Information
1. 四川省妇幼保健院放射科,四川成都 646000
- Publication Type:Journal Article
- Keywords:
spine;
congenital abnormalities;
fetus;
magnetic resonance imaging;
flip angle
- From:
Chinese Journal of Medical Imaging Technology
2024;40(12):1931-1935
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of 3.0T 3D fast imaging employing steady state acquisition(FIESTA)with small flip angle(FA)for detecting fetal spinal dysplasia.Methods Forty-three singletons who underwent spinal MR examination,including 2D single shot fast spin echo(2D SSFSE),2D FIESTA,2D susceptibility weighted imaging(SWI)and 3D FIESTA sequences due to suspected spinal dysplasia by prenatal ultrasound were retrospectively enrolled.Likert scale was performed to evaluate imaging quality of fetal cervical,thoracic and lumbosacral vertebrae,then signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were calculated.The subjective scores and objective evaluations of imaging quality were compared among different sequences.Results Significant differences of subjective scores,SNR and CNR of fetal cervical,thoracic and lumbosacral vertebrae were found among different sequences(all P＜0.001).Subjective scores of fetal lumbosacral vertebrae were not significantly different between 2D SSFSE and 2D FIESTA nor 2D SWI and 3D FIESTA(both P＞0.05),while significant differences of subjective scores of fetal cervical,thoracic and lumbosacral vertebrae were found between each 2 other sequences(all P＜0.05).For 3D FIESTA,SNR of fetal cervical and thoracic vertebrae,as well as CNR of thoracic vertebrae were all higher than those of 2D SSFSE,2D FIESTA and 2D SWI(all P＜0.05),while CNR of cervical vertebrae was higher than that of 2D SSFSE and 2D FIESTA(both P＜0.05),SNR of lumbosacral vertebrae was higher than that of 2D SWI(P＜0.05),and CNR of lumbosacral vertebrae was higher than that of 2D SSFSE and 2D SWI(both P＜0.05).Conclusion 3.0T FIESTA with small FA was helpful for detecting fetal spinal dysplasia.
