Casper Beijst is a medical physicist and scientist at the department of radiotherapy of the UMC Utrecht. His research focuses on the development of MRI/PET for therapy guidance. He is the project leader of the MRI/PET research group. He has an official double registration as a medical physicist both in the field of radiotherapy and radiology/nuclear medicine. The crossover in expertise allows him to bridge the gap between radiology and radiotherapy with the aim of improving imaging for therapy guidance