Imaging of left-to-right shunt in adults.

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.

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