Application Of Magnetic Resonance Imaging In Fetal Intracranial Hemorrhage

Objective To investigate the value of magnetic resonance imaging(MRI)in Fetal Intracranial Hemorrhage(FICH).Methods A retrospective analysis of 65 cases of FICH detected by Magnetic resonance imaging(MRI)in Anhui Province Children’s Hospital from January 2014 to May 2022 was conducted to observe the location,range and signal characteristics of the hemorrhagic focus and grade the severity.The results were compared with Ultrasound.Results Eight cases Germinal matrix hemorrhage in 65 cases of patients with MRI,39 cases intraventricular hemorrhage,10 cases were intraventricular hemorrhage with parenchymal hemorrhage,8 cases with severe intracranial disease(including porencephaly abnormalities in 5 cases,the left hemisphere atrophy in 1 case,dandy-walker deformity in 1 case,hydrocephalus in 1 case).FICH grading included 8 cases of grade Ⅰ,24 cases of grade Ⅱ,15 cases of grade Ⅲ,10 cases of grade Ⅳ and 8cases of grade Ⅴ.Review of 65 cases of prenatal US report : 35 cases of abnormal lesions were found,including 28 cases of suspected FICH,1 case of suspected gray matter heterotopia,2 cases of brain parenchyma cystic lesions,1 case of suspected teratoma,3 cases of suspected choroidal cyst,and 30 cases of no lesions were found,including 24 cases of lateral ventricle widening,1 case of posterior fossa pool widening,1 case of auricle deformity,1 case of suspected corpus callosum dysplasia,3cases of hydrocephalus.Among 65 FICH cases,the abnormal detection rate of prenatal MRI(65/65,100%)was significantly higher than that of prenatal US examination(35/65,54%),and the difference was statistically significant(P < 0.01).For different grades of FICH,the detection rate of grade Ⅱ,Ⅲ and Ⅳ FICH was higher than that of US examination(P < 0.05).For the cases of multi-focal intracranial hemorrhage,the detection rate of FICH in 2 and 3 lesions on prenatal MRI was higher than that of US examination(P < 0.05).Conclusion The detection rate of prenatal MRI scan for FICH is significantly higher than that of ultrasound imaging,and the detection rate of FICH for different grades or multi-focal FICH is better than that of ultrasound imaging,which has advantages in the evaluation of the severity of FICH.