Current practice of first-trimester ultrasound screening for structural fetal anomalies in developed countries.

First-trimester screening for structural fetal anomalies is widely offered in developed countries but large differences are reported in availability and use of screening protocols, extent of anatomy assessment, training and experience of sonographers and quality monitoring systems. Consequently, this results in an unequal offer to parents in developed countries, sometimes even within the same country. Furthermore, as offer and execution differ so widely, this has to be taken into account when results of screening policies are scientifically published or compared. This article is protected by copyright. All rights reserved.