Which sonographic views allow visualization of a patent ductus arteriosus (PDA)?

Comprehensive and Detailed Explanation From Exact Extract:

Visualization of a patent ductus arteriosus (PDA) typically requires imaging planes that include the aortic arch and pulmonary artery, which are well seen from the suprasternal notch window and the basal parasternal short axis view.

The suprasternal notch window provides a longitudinal view of the aortic arch and adjacent pulmonary artery, where the PDA is located. The basal parasternal short axis at the level of the great vessels can also visualize flow through the PDA using color Doppler.

Other views like parasternal long axis and apical views are less optimal for direct PDA visualization.

This is detailed in the "Textbook of Clinical Echocardiography, 6e", Chapter on Congenital Heart Defects and PDA Imaging【20:370-375†Textbook of Clinical Echocardiography】.