Dr. Hoffmann is a certified Medical Physics Expert and is heading the Experimental MR-integrated Proton Therapy group at OncoRay – National Centre for Radiation Research in Oncology in Dresden, Germany since 2015. He completed his postdoctoral training in Medical Physics in 2007 at the Radboud University Medical Centre in Nijmegen, The Netherlands. He continued to work in Nijmegen as a Medical Physics staff member with interests in brachytherapy, mathematical optimization of radiation treatment planning and MR imaging for radiotherapy until 2011. He then moved to MAASTRO Clinic in Maastricht, The Netherlands, where he was appointed Principle Physicist brachytherapy and became responsible for the introduction of advanced MRI techniques for radiation treatment planning. His current focus includes MR-guided tumour therapy using ionizing radiation and focused ultrasound (FUS). Key areas of his research program include the use of 4D-MRI for motion characterization in patients with abdominopelvic tumours, the development of a first prototype for MR-guided proton therapy, and the clinical implementation of combined tumour therapy of MR-guided FUS and high-precision radiation therapy. Dr. Hoffmann has published over 60 manuscripts. He serves on committees for the Netherlands Commission on Radiation Dosimetry (NCS) and is coordinating the “Image Guidance in Particle Therapy” work package of the European Particle Therapy Network (EPTN) task force of ESTRO. Dr. Hoffmann is passionate about teaching, has supervised 10 doctoral dissertations and has mentored dozens of medical physics residents and students in his career.