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In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. This research aimed to assess the validity of ultrasound scans with new features in detecting fetal anal atresia and verify the effectiveness of these new features. Additionally, we aimed at investigating the perinatal incidence of anal atresia. This multicenter prospective study recruited 94, normal gravidas and 84 gravidas with anal atresia fetuses. The gold standard for diagnosing perinatal anal atresia is routine neonatal anus examinations.
The incidence calculation was based on the results of the gold standard. The validity of our new approach was evaluated via a diagnostic test involving all 94, subjects. The effectiveness of our new features was assessed through an ablation study in a randomly established new dataset, with the ratio of anal atresia to non-anal atresia cases of The annual perinatal incidence of anal atresia between and ranges from 0.
Ultrasound scans show high validity and clinical value in detecting fetal anal atresia. Our new ultrasound features significantly promote the detection of fetal anal atresia. Anal atresia is a congenital anorectal malformation featuring an absence of a normal anus 1 and may accompany a broad spectrum of congenital defects from membranous covering to complex cloacal malformations related to genital or urinary tracts 2 , 3 , 4 , 5. It is rare in low-risk fetuses with a perinatal incidence under 0.
However, it can produce numerous poor outcomes, such as high long-term mortality of fetuses and neonates, and urogenital system dysfunction 3.
