Dr Rob Merrifield obtained his PhD in Medical Image Computing from Imperial College in 2003. He specialised in Patient Specific Modelling of Left Ventricular Morphology and Flow using Magnetic Resonance Imaging and Computational Fluid Dynamics. He has had significant impact in the field of medical image computing. He has authored the medical imaging software CMRtools that has been used for cardiac assessment in over 100,000 patients worldwide. The software allows the viewing and analysis of Cardiac Magnetic Resonance images and provides specialist assessment of cardiac morphology and function. He was responsible for regulatory approval of the software and attained FDA510(k) approval and a Class I CE Mark to allow the software to be used for clinical diagnosis in US and Europe. The software has been used in over 100 peer-reviewed research publications since 2003.