Marius Keller graduated from Heidelberg Medical School (Germany) in 2015 after completing his final year at Johns Hopkins (Baltimore, USA) and the University of Zürich (Switzerland). His MD thesis investigated left ventricular strain imaging using echocardiography and cardiac magnetic resonance imaging. He continued residency training in cardiology at the University Clinic in Heidelberg before transitioning into anesthesiology and critical care in 2016. At the University Hospital Tuebingen (Germany) he has since conducted research on 3D-based strain echocardiography of the right ventricle as the vice lead of the according work group. He investigates netrins, proteins of the neuronal guidance family, in murine myocardial ischemia.