G Bertelli1, A E Quinton2, P D Lewis3, P Ali4, C Morgan3. 1. Department of Oncology, Singleton Hospital, Swansea. Electronic address: gian.bertelli@wales.nhs.uk. 2. Department of Oncology, Singleton Hospital, Swansea. 3. Centre for Nanohealth and Institute of Life Science, College of Medicine, Swansea University, Swansea. 4. Department of Nuclear Medicine, Singleton Hospital, Swansea, UK.