单层厚块单次激发快速自旋回波重 T2加权序列在胎儿 MRI 中的诊断价值  

The diagnostic value of thick-slab single-shot turbo spin-echo T2 ＊-weighted sequence in fetal MRI

作　　者：莫显斌[1,2] 夏明[1,3] 蔡萍[1] 杜明珊[1] 侯文静[1] 陈康[1] 杨春[2] 姚倩东[2] 王新[1] 

机构地区：[1]第三军医大学西南医院放射科,重庆400038 [2]四川省科学城医院放射科 [3]四川省泸州市人民医院放射科

出　　处：《实用放射学杂志》2015年第6期994-997,共4页Journal of Practical Radiology

基　　金：重庆市自然科学基金计划项目，2007年重庆市人口和计划生育软科学研究项目（2007-1-127）。

摘　　要：目的：评价单次激发厚块快速自旋回波（SSTSE）重 T2加权序列磁共振胎儿成像（MRF）在胎儿检查中的价值。方法随机抽取产前超声筛查诊断或怀疑胎儿先天缺陷及染色体异常行常规 MR 检查后的孕妇1990例中的328例共338个胎儿行MRF,比较 MRF 和常规方法的诊断结果。结果MRF 检出624个病变,14例（2.2%）改变了常规 MR 的主要诊断；额外发现48个（8.4%）胎儿病变、66个母体病变；78个胎儿病变 MRF 上未显示；MRF 的介入,增强了350个高含水量病变（56.1%）常规 MR诊断的信心。结论MRF 对于胎儿肢体、充满液体器官的异常扩张、病理性积液以及胎儿囊性病变的评估具有重要价值,对多层T2 WI 序列起重要辅助诊断作用。Objective To evaluate the diagnostic value of thick-slab single-shot turbo spin-echo （SSTSE）T2 ？-weighted sequence in magnetic resonance fetography （MRF）for fetal abnormalities.Methods 328 of 1 990 pregnant women with the diagnosis of fetal congenital defects on prenatal ultrasound screening or chromosome examination were randomly selected,and 338 fetuses were ob-tained.These fetuses were scanned by conventional magnetic resonance imaging （MRI）and MRF.The diagnostic results from the two MR methods were compared.Results Six hundred and twenty-four lesions were detected by MRF.The primary diagnosis based on conventional MRI was changed for 14 lesions （2.2%）.New findings were identified for 48 fetal lesions （8.4%）and 66 ma-ternal lesions.However,78 fetal lesions could not to be identified by MRF.MRF could increase the diagnostic confidence for fetal lesions with high water content （56.1% of the lesions）.Conclusion MRF can yield more precise information for fetal extremities, fluid-filled cavities,pathological hydrops and cystic lesions.As an additional aid to the conventional multi-slice T2-weighted se-quence.

关 键 词：诊断成像 胎儿 磁共振成像 

分 类 号：R714.5[医药卫生—妇产科学] R445.2[医药卫生—临床医学]