This thoroughly revised textbook provides a practically applicable guide to three-dimensional echocardiography (3DE). Background is provided on the evolution of the technology and physics that support the implementation of both transthoracic and transesophageal approaches to 3DE. The incremental value of 3DE to assess cardiac chambers is also described. Moreover, a range of cardiac valvular diseases including the mitral, aortic, and tricuspid valve have been portrayed and illustrated in depth.These include congenital abnormalities, regurgitation and stenosis. Emphasis is also placed on technical aspects of the technique and where it can provide added value, including post-surgery assessments and evaluation of cardiac masses.