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  

3.0T 3D fast imaging employing steady state acquisition with small flip angle for detecting fetal spinal dysplasia

作　　者：曹倩 尹宏宇 陈霞 张坤 王世琦[1] 康敏[1] CAO Qian;YIN Hongyu;CHEN Xia;ZHANG Kun;WANG Shiqi;KANG Min(Department of Radiology,Sichuan Provincial Maternal and Child Health Care Hospital,Chengdu 646000,China)

机构地区：[1]四川省妇幼保健院放射科,四川成都646000

出　　处：《中国医学影像技术》2024年第12期1931-1935,共5页Chinese Journal of Medical Imaging Technology

摘　　要：目的观察3.0T小翻转角(FA)3D快速稳态进动成像(FIESTA)显示胎儿脊柱发育畸形的价值。方法回顾性分析43胎因产前超声提示脊柱异常而接受脊柱MR检查,包括2D单次激发快速自旋回波(2D SSFSE)、2D FIESTA、2D磁敏感加权成像(SWI)及3D FIESTA的单胎胎儿,以Likert量表对图像显示胎儿颈、胸、腰骶椎质量进行主观评分,计算图像信噪比(SNR)及对比度噪声比(CNR),并对各序列进行比较。结果各序列图像显示胎儿颈、胸及腰骶椎质量主观评分、SNR及CNR差异均有统计学意义(P均<0.001)。2D SSFSE与2D FIESTA、2D SWI与3D FIESTA显示胎儿腰骶椎质量主观评分差异无统计学意义(P均>0.05),而其余序列显示胎儿颈、胸及腰骶椎质量主观评分结果两两比较差异均有统计学意义(P均<0.05)。3D FIESTA所示胎儿颈椎SNR、胸椎SNR及CNR均高于2D SSFSE、2D FIESTA及2D SWI(P均<0.05),所示颈椎CNR高于2D SSFSE及2D FIESTA(P均<0.05)、腰骶椎SNR高于2D SWI(P<0.05)而腰骶椎CNR高于2D SSFSE及2D SWI(P均<0.05)。结论3.0T小FA FIESTA有助于检出胎儿脊柱发育畸形。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.

关 键 词：脊柱 先天性畸形 胎儿 磁共振成像 翻转角 

分 类 号：R714.53[医药卫生—妇产科学] R445.2[医药卫生—临床医学]