Which imaging planes are essential for a comprehensive fetal echocardiography exam?

• A. Four-chamber view; left and right ventricular outflow tract views; three-vessel/trachea view; basal short-axis view
• B. Two-chamber view; aortic root view; sagittal view; basal short-axis view
• C. Long-axis view; coronary view; four-chamber view; three-vessel view
• D. Four-chamber view only

Answer: (A)

A comprehensive fetal echocardiography relies on imaging in multiple complementary planes to fully map the heart’s structure, connections, and how the great vessels relate to each other. The four-chamber view is the foundation because it lets you assess the atrial and ventricular connections, atrioventricular valves, chamber sizes, and situs, which are essential for identifying many common anomalies. Including the left and right ventricular outflow tract views is crucial to evaluate the origins and paths of the main outflow tracts and the function of the valves at the outlets, helping to detect stenoses or atresias that the four-chamber view alone might miss. The three-vessel/trachea view adds a cross-sectional look at the great vessels and their spatial relationship to the trachea, enabling detection of discordant great vessel connections and other arch anomalies that can accompany congenital heart disease. The basal short-axis view provides a base-level cross-section that helps visualize the origins of the great vessels and their relationship to the ventricles, supporting assessment of septal integrity and outflow tract alignment. Together, these planes give a systematic, full assessment of cardiac anatomy and vessel relationships that a more limited set would not, making this combination the most complete approach. Other planes like a lone sagittal or single two-chamber view may offer additional detail in specific cases, but they do not substitute for the comprehensive set described here.