The application of MR in acute abdomen in pregnancy
10.3969/j.issn.1002-1671.2025.04.020
- VernacularTitle:MR在妊娠期急腹症中的应用
- Author:
Jian QI
1
;
Lili SHI
1
Author Information
1. 唐山市妇幼保健院放射科,河北 唐山 063000
- Publication Type:Journal Article
- Keywords:
magnetic resonance imaging;
acute abdomen in pregnancy;
diffusion weighted imaging;
apparent diffusion coefficient
- From:
Journal of Practical Radiology
2025;41(4):629-632
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the diagnostic value of MR in acute abdomen in pregnancy(AAP).Methods A total of 38 cases of acute abdominal pain pregnant patients who underwent pelvic MRI examinations were selected.The diagnoses made during surgery or at discharge were taken as the final diagnostic results.The MR imaging manifestations of various diseases were analyzed.Results The coincidence rate of MR diagnosis in 38 pregnant women with acute abdominal pain was 92.1%(35/38).Among them,19 cases were torsion of ovarian tumor pedicle,and 17 cases were correctly diagnosed by MR.The manifestations were adnexal tumors with spiral pedicle structures,the wall of the tumor near the pedicle were locally thickened,and there were exudative lesions around the tumor.There were 9 cases of hysteromyoma with degenerative hemorrhage,which showed mixed signal nodules or masses in the myometrium on the side of abdominal pain,and the boundaries were clear.Hemorrhagic focus with high signal intensity were found on T1WI.There were 7 cases of placental abruption,and 6 cases were correctly diagnosed by MR.The new mixed signal mass protruding from one side of the placenta into the uterine cavity.T2WI showed equal or slightly high signal,T1WI showed equal signal,diffusion weighted imaging(DWI)showed high signal,apparent diffusion coefficient(ADC)showed low signal,and the lesion were located under the placenta and tilted near the placenta edge.There were 3 cases of appendicitis with surrounding abscess formation.MR manifesta-tions included structural disorder of the right lower abdomen and turbid fat space,with peripheral exudative lesions visible.Round or irregular cystic masses could be seen,in which T2WI showed slightly high signal and T1WI showed equal signal,DWI showed high signal,and ADC showed low signal.In 2 cases,a slightly high T2WI signal focus was found in the curved blind tube with a diameter of＞6 mm.Conclusion MRI has differential diagnostic value for AAP,which can provide accurate diagnostic basis for clinic.
