Fetal MRI in diagnosis of duodenal obstruction
10.13929/j.issn.1003-3289.2025.10.004
- VernacularTitle:胎儿MRI诊断十二指肠梗阻
- Author:
Juncheng ZHU
1
;
Fenglin JIA
;
Yi LIAO
;
Gang NING
;
Xuesheng LI
;
Yujin ZHANG
;
Haibo QU
Author Information
1. 四川大学华西第二医院放射科出生缺陷与相关妇儿疾病教育部重点实验室,四川成都 610041;成都市第七人民医院(成都医学院附属肿瘤医院)放射科,四川成都 610213
- Publication Type:Journal Article
- Keywords:
fetus;
duodenal obstruction;
magnetic resonance imaging
- From:
Chinese Journal of Medical Imaging Technology
2025;41(10):1633-1636
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of fetal MRI in diagnosis of duodenal obstruction(DO).Methods A total of 35 fetuses with suspected DO according to MRI were retrospectively included.The length and the maximum diameter of the dilated duodenum were measured,so as site(categorized in descending order from proximal to distal as descending segment,horizontal segment and ascending duodenum/proximal jejunum)and the degree of obstruction(complete or incomplete)were assessed.Taken findings of labor induction specimen,postnatal neonatal surgery or follow-up data as standards,the positive predictive value(PPV)of MRI for diagnosing fetal DO was calculated,while the correlations of the measured parameters of dilated duodenum and the confirmed obstruction site/degree were analyzed.Results Among 35 fetuses,DO was confirmed in 34 fetuses,yielding an overall PPV of 97.14％(34/35)for MRI.In 34 fetuses with confirmed DO,there were 23 with descending DO(DDO),4 with horizontal DO(HDO)and 7 with ascending DO/proximal jejunum obstruction(ADO/PJO),including 12 with complete DO and 22 with incomplete DO.PPV of MRI for diagnosing DDO,HDO and ADO/PJO was 87.50％(21/24),50.00％(2/4)and 100％(7/7),respectively,for diagnosing complete and incomplete DO was 90.00％(9/10)and 84.00％(21/25),respectively.Both the length and the maximum diameter of fetal proximal dilated duodenum showed on MRI were positively correlated with the actual obstruction site(from proximal to distal)(rs=0.736,P＜0.001;rs=0.424,P=0.011,respectively),but had no significant rank correlation with the degree of obstruction(rs=-0.216,P=0.212;rs=-0.285,P=0.097,respectively).Conclusion Fetal MRI could effectively evaluate the length and the maximum diameter of dilated duodenum hence indicating the level and degree of DO.
