Abstract:

Objective: To explore the application of ultrasound alone and ultrasound combined with magnetic resonance imaging (MRI) in the diagnosis of fetal diseases. Methods: 177 pregnant women with abnormal fetal detected by ultrasound, and further examined by MRI, were selected from January 2015 to July 2019. Those cases with lost follow-up and without reexamination were excluded. The cases were then divided into groups according to MRI diagnosis results. The accuracy rates of ultrasound and/or MRI diagnosis according to the pregnancy outcomes were analyzed.Results: The result of ultrasound and the result of MRI were consistent in diagnosing the fetal respiratory system and urinary system, and the proportions of exact match were 45.9% and 53.8%, respectively. MRI mostly supplemented the results of ultrasound when using in the diagnosis of the fetal digestive system disease and ovarian cyst, with the supplemental proportion of 57.7% and 80%, respectively. The accuracy rate of MRI in the diagnosis of digestive system diseases was significantly higher than that of ultrasound (P<0.05); there was no obvious difference between the accuracy rate of MRI and ultrasound in detecting structural abnormalities and echo enhancement (allP<0.05).Conclusions: In case of fetal respiratory and urinary system disease detected by ultrasound, MRI can be suggested when the ultrasonic diagnosis information was insufficient. When detecting fetal digestive system disease and ovarian cysts, MRI was better recommendation regardless of the structural abnormalities or echo enhancement found by ultrasound.

Key words: Ultrasonography, prenatal, Magnetic resonance imaging, Fetal diseases, Diagnosis, Pregnancy outcomes