Use of cardiac CT angiography to assist in the diagnosis and treatment of aortic prosthetic paravalvular leak: a practical guide.

Percutaneous repair of aortic paravalvular regurgitation can help avoid the need for repeat valve surgery. Although the initial diagnosis of paravalvular regurgitation is usually made with echocardiography, cardiac CT angiography helps to determine the site and morphology of these leaks. The utility of CT is highly dependent on the quality of the data. Herein, we describe a systematic approach to image acquisition and interpretation of cardiac CT angiography in patients with aortic paravalvular regurgitation, which integrates findings from echocardiography. This approach can be used to minimize inaccuracies in the diagnosis and enhance the procedural success for percutaneous repair of aortic paravalvular regurgitation.