David Hamilton has 27 years of medical physics experience in nuclear medicine within general and teaching hospitals, university departments and regional health authorities within England, Ireland, Saudi Arabia, Kuwait and Bahrain; including honorary lectureship at Trinity College, Dublin. consultant Medical Physicist at the Military Hospital, Riyadh, Saudi Arabia since 1992.Published 41 abstracts, papers and book chapters. Gained PhD in 1983 with a thesis entiteld: The analysis of 81Krm equilibrium inhalation data. Bained BSc in Physics in 1973 and MSc in BioEngineering in 1975. Awarde