• Hybrid PET/MRI systems.
• Motion correction of PET images.
• Methodology, new tracers and data analysis for clinical and research PET studies, in oncology, cardiology and neuropsychiatry.
• The use of PET in multicentre trials to evaluate new therapies.

Paul Marsden has been involved in PET imaging for most of his career and has worked in all aspects of the field from the production of new radionuclides through to the development of clinical and research scanning protocols. He has a degree in physics at Oxford University, and a PhD in Medical Physics from the Institute of Cancer Research, University of London. His research track record includes the early development of combined PET and MRI imaging systems, data analysis methods for clinical and research PET studies, the development of radionuclide production methods and development of PET and PET-CT image acquisition methods. Much of this work is in collaboration with other clinical researchers in oncology, radiotherapy, cardiology and neuropsychiatry. As Scientific Director at Guy's and St Thomas' PET Centre, Paul is also familiar with the various regulatory, logistical and technical issues associated with clinical and research PET studies. He contributes regularly to many PET-related international meetings and committees and, with Dr Sally Barrington, runs the NCRI PET Research Network.