Usefulness of the Right Parasternal Approach to Evaluate the Morphology of Atrial Septal Defect for Transcatheter Closure Using Two-Dimensional and Three-Dimensional Transthoracic Echocardiography

Additional use of the right parasternal approach enables detailed morphologic evaluation for transcatheter closure of ASDs. In patients with suboptimal images on 3D TTE in the left conventional approach, additional 3D TTE in the right parasternal approach can improve the feasibility of obtaining optimal 3D images to evaluate the shapes and locations of ASDs.