基于德阳市正常胎儿MRI脑径线定量评估  

Normative diameter measurements of the fetal brain using MRI in Deyang city of China

作　　者：宋思思[1] 黄霓 陈淑君[1] 刘高元 明兵[1] SONG Sisi;HUANG Ni;CHEN Shujun;LIU Gaoyuan;MING Bing(Department of Radiology,Deyang People’s Hospital,Deyang,Sichuan Province 618000,China)

机构地区：[1]德阳市人民医院放射科,四川德阳618000

出　　处：《实用放射学杂志》2023年第2期287-291,共5页Journal of Practical Radiology

摘　　要：目的回顾性分析胎儿MRI图像并测量脑径线值,建立基于MRI的正常胎儿脑径线定量评估方法。方法收集199例正常胎儿的头部MRI图像并进行分析测量,测量径线包括脑双顶径(BBPD)、颅骨双顶径(SBPD)、脑枕额径(BFOD)、颅骨枕额径(SFOD)、头围(HC)、小脑横径(TCD)、小脑蚓部上下径(VHD)及小脑蚓部前后径(VWD)。对胎儿MRI脑径线测值与孕周关系进行分析。其中63例3 d内同时行超声检查,分析MRI测值与超声测值的一致性。结果胎儿MRI脑径线测值与孕周有明显的线性相关,其R2值分别为0.878、0.808、0.862、0.854、0.835、0.915、0.785、0.732。MRI BBPD、HC测值与超声测值有良好的一致性,两者之间无统计学差异(P>0.05)。结论基于MRI定量评估正常胎儿脑径线,可为临床诊断胎儿生长受限(FGR)提供重要参考依据。Objective To retrospectively analyzed fetal MRI images and brain diameter measurements were measured to produce reference biometry data based on MRI.Methods A total of 199 MRI examinations of fetal with normal brain appearances were included in this study.Diameter measurements were measured including brain biparietal diameter(BBPD),skull biparietal diameter(SBPD),brain fronto-occipital diameter(BFOD),skull fronto-occipital diameter(SFOD),head circumference(HC),transverse cerebellar diameter(TCD),vermis height diameter(VHD)and vermis width diameter(VWD).The relationship between diameter measurements of fetal brain and gestational age was analyzed.In addition,the consistency of MRI and ultrasound measurements was examined in 63 fetuses who had ultrasound examinations within three days of each other.Results All fetal brain diameter measurements showed a significant linear correlation with gestational age.And the R2 values were as follows:0.878,0.808,0.862,0.854,0.835,0.915,0.785,0.732.Formeasuring BBPD and HC,there was no significant difference between MRI and ultrasound(P>0.05).Conclusion Quantitative assessment of normal fetal brain diameter based on MRI can be a valuable reference in the clinical diagnosis of fetal growth restriction(FGR).

关 键 词：胎儿 脑部 径线 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R714.5[医药卫生—诊断学] R322.81[医药卫生—临床医学]