Heart diseases are the most severe illness in industrial countries. For the diagnosis and therapy of several severe heart diseases the accurate visualisation of the 3D heart geometry (spatial heart shape and volume of the ventricles, shape and structure of the vessel tree, heart walls' movement) can play a crucial role. Attributes like the shape of the ventricles, the curvature of the vessels, or the shape of a stenosis could play an important role in operation planning (find optimal angle for next injection, decide stent type etc.). The objective of the 3D HeartView project is to demonstrate the benefits of HPCN technology in improving the diagnostic and clinical procedures of heart diseases treatment. It enables fast 3D modeling of the heart based on 2D X-ray angiographic pictures.