It is of paramount importance to use cardiac imaging to guide interventional treatment of congenital, structural as well as valvular heart diseases in order to ensure successful outcomes. Recently, there has been a surge in transcatheter treatment of these cardiac conditions. Intraprocedural guidance of catheter-based treatment is based mainly on transesophageal echocardiography, particularly 3-dimesional imaging for procedures such as the Mitralclip, left atrial appendage occlusion, mitral valve-in-valve procedure, and atrial septal defect occlusion.