1. Department of Radiology, The Royal Marsden NHS Foundation Trust, London, UK
2. Cancer Imaging, School of Biomedical Engineering & Imaging Sciences, King’s College London, London, UK
3. Department of Radiology, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
4. Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, UK
5. Department of Radiology, Velindre Cancer Centre, Cardiff, UK