A method for providing guidance in Cardiac Resynchronization Therapy (CRT) comprising: a) providing image data sets of the heart of a patient； b) creating a three-dimensional (3D) anatomical model of the cardiac structures； c) calculating myocardium infarct scar distribution； d) calculating heart mechanical activation data； e) superimposing the scar distribution and the mechanical activation data on the 3D anatomical model to obtain a 3D roadmap model including anatomical geometry and mechanical activation data. A corresponding device and computer program are also model disclosed.
