Angiogram Echocardiography Medical image processing 3D reconstruction Active contours methods Artificial intelligence Computed Tomography (CT) Computerized tomography Coronary arteries Coronary artery extraction Coronary artery segmentation Deformable templates Discrete wavelet transform Echocardiography Images Feature-based Fundamental component Heart Hybrid. Featurebased Image enhancement Image fusion Image registration Image segmentation Image-guided Intervention Intensity-based Level set (LS) Approaches Mathematical morphology Medical applications Medical imaging Multi-scale approaches Multimodality Image Registration