Imaging of left-to-right shunt in adults

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Purpose of review

Left-to-right shunts are commonly seen in congenital heart diseases. This review aims to review the anatomy, physiology, and imaging of the four most common left-to-right lesions in adults.

Recent findings

Reported late complications of left-to-right lesions provide guidance in follow-up imaging. Use of three-dimensional echocardiography helps not only in the diagnosis of these defects but also in assistance during device closure.


Noninvasive imaging plays a significant role in the diagnosis and management of left-to-right lesions.

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