1.5T磁共振SSFSE及FIESTA序列对胎盘植入的诊断及应用研究  

1.5T Magnetic Resonance SSFSE and FIESTA Sequence in the Diagnosis and Application of Placenta Accrete

作　　者：叶亚鹏 岑贤友 YE Ya-peng;CEN Xian-you(Imaging Department,The Fourth People's Hospital of Nanhai District,Foshan City,Guangdong 528211,China)

机构地区：[1]广东省佛山市南海区第四人民医院影像科,广东528211

出　　处：《影像技术》2022年第4期9-14,共6页Image Technology

基　　金：佛山市卫生和健康局2020年医学科研课题立项(20200387)。

摘　　要：目的:探讨1.5T磁共振单次激发快速自旋回波序列(SSFSE)及二维快速稳态进动序列(FIESTA)在胎盘植入患者中的诊断效果。方法:选择2019年1月-2021年6月疑似胎盘植入孕妇138例为对象,均分别行FIESTA及SSFSE单序列扫描,对比两种序列诊断效果,以手术及病理结果为“金标准”,分析FIESTA及SSFSE单序列在胎盘植入中的检出率,并利用公式计算不同序列诊断效能,比较两种序列诊断的图像质量。结果:138例疑似胎盘植入孕妇经手术及病理检查确诊51例,确诊率为36.96%。FIESTA序列检查确诊43例,检查准确度为78.26%[(32+76)/138](P<0.05);SSFSE单序列检查确诊46例,检查准确度为81.88%[(36+77)/138](P<0.05);1.5T磁共振FIESTA、SSFSE单序列联合检查确诊49例,检查准确度为92.75%[(45+83)/138](P>0.05);1.5T磁共振FIESTA、SSFSE单序列联合检查在胎盘植入中的诊断准确度、灵敏度、特异度、阳性预测值及阴性预测值均高于单一序列检查(P<0.05);FIESTA、SSFSE单序列及二者联合在胎盘植入诊断中图像优良率差异无统计学意义(P>0.05)。结论:1.5T磁共振FIESTA、SSFSE单序列用于胎盘植入均可获得较高检出率,且二者联合检查诊断灵敏度和特异度较高,未对图像质量产生影响,能为临床诊疗提供影像学依据。Objective:To investigate the diagnostic effect of 1.5T single-shot fast spin-echo sequence(SSFSE)and two-dimensional fast steady-state precession(FIESTA)sequence in patients with placenta accreta.Methods:A total of 138 pregnant women with suspected placenta accreta from January 2019 to June 2021 were selected as the subjects,and they all underwent FIESTA and SSFSE single-sequence scans respectively.The diagnostic effects of the two sequences were compared.The detection rate of FIESTA and SSFSE single sequence in placenta accreta was analyzed,and the diagnostic efficacy of different sequences was calculated by formula,and the image quality of the two sequences was compared.Results:Among 138 pregnant women with suspected placenta accreta,51 were diagnosed by surgery and pathological examination,and the diagnosis rate was 36.96%.FIESTA sequence examination confirmed 43 cases,and the inspection accuracy was 78.26%[(32+76)/138](P<0.05);SSFSE single sequence examination confirmed 46 cases,and the inspection accuracy was 81.88%[(36+77)/138](P<0.05);49 cases were diagnosed by 1.5T magnetic resonance FIESTA and SSFSE single-sequence combined examination,and the inspection accuracy was 92.75%[(45+83)/138](P>0.05);1.5T magnetic resonance FIESTA,SSFSE The diagnostic accuracy,sensitivity,specificity,positive predictive value and negative predictive value of single-sequence combined examination in placenta accreta were higher than those of single-sequence examination(P<0.05).The excellent and good rate of images in the diagnosis was not statistically significant(P>0.05).Conclusion:1.5T MRI FIESTA and SSFSE single sequence can achieve high detection rate in placenta accreta,and the combined detection of the two has high diagnostic sensitivity and specificity,which does not affect the image quality,and can be used for clinical diagnosis and treatment.Provide imaging evidence.

关 键 词：1.5T磁共振 单次激发快速自旋回波序列 二维快速稳态进动序列 胎盘植入 诊断效果 

分 类 号：R445.2[医药卫生—影像医学与核医学]