The Computational Mathematics group of the University of Groningen has two four-year PhD positions on imaged-based numerical modeling of the cardiovascular system. The positions are embedded in the project "CardioZoom: High-Fidelity Cardiovascular Modeling from super-fast Magnetic Resonance Imaging", a 1.5M Euro, 5-year ERC-Starting Grant awarded to Dr Cristóbal Bertoglio by the European Research Council Therefore, the PhD candidates will join a vibrant and collaborative research group, with access to a large, (inter)national and multidisciplinary scientific network.