He earned his PhD from the Institute of Cancer Research, University of London. His research interests range from proton imaging and therapy to photon beam modeling Monte Carlo, electronic portal imaging, and 4D Monte Carlo proton and photon dosimetry. Frank Verhaegen is head of clinical physics research at the Maastro Clinic. He also holds a professorship at the University of Maastricht. Dr. Verhaegen is a fellow of the Institute of Physics and Engineering in Medicine and the Institute of Physics. He earned his PhD from the University of Ghent. His research interests include imaging and dosimetry for photon and electron therapy, brachytherapy, particle therapy, and small animal radiotherapy. Reviews