This ISUOG 2025 webinar, presented by Prof. Asma Khalil, outlines a systematic approach to fetal brain ultrasound in the second trimester. The session focuses on how to perform a structured and reproducible assessment of the fetal brain as part of the routine mid-trimester anomaly scan.
Prof. Khalil reviews the essential axial planes required for standard fetal brain ultrasound, including the transventricular, transthalamic, and transcerebellar views. She explains the correct identification of key intracranial structures such as the lateral ventricles, cavum septi pellucidi, thalami, cerebellum, and cisterna magna, emphasizing anatomical landmarks and proper plane alignment.
The webinar highlights the importance of following a consistent scanning sequence to improve detection rates and reduce the risk of missed abnormalities. Practical guidance is provided on optimizing image acquisition, confirming correct anatomical orientation, and understanding normal developmental features of the fetal brain in the second trimester.
In addition, Prof. Khalil discusses when further evaluation through detailed fetal neurosonography may be indicated and reinforces the role of structured assessment in improving diagnostic confidence.
This ISUOG 2025 session delivers clinically focused guidance aimed at standardizing fetal brain ultrasound examination and supporting accurate central nervous system evaluation in daily obstetric practice.
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