Echocardiography Computed Tomography (CT) Feature-based Holes Intensity-based Multimodality Image Registration Uncertainty Active contours methods Advancing front mesh Artificial intelligence Computerized tomography Deformable templates Echocardiography Images Hole filling Hollow Hybrid Hybrid. Featurebased Image enhancement Image fusion Image registration Image-guided Intervention Level set (LS) Approaches Medical applications Medical imaging Mesh Multimodality image registration Registration algorithms Segmentation Surfaces Triangular