On the question of whether to model or measure the levels of RF energy from mobile phones into the head

In recent years antenna engineers have brought their inventions ever closer to the human head. As a result concerns have surfaced about what effect radio frequency energy at the levels produced by mobile phones might or might have on the human brain. Since these devices are very popular, the subject can emotive and is its study is complex since it is extremely difficult to measure anything within a living head. Our work at Loughborough University seeks to establish the relative RF energy levels in parts of the head, particularly the eyes, due to mobile phones, spectacles and jewellery. This paper discusses and contrasts the two major disciplines in this area of research, namely measurement of representative physical phantoms (solution filled heads), and analysis of complex mathematical data based upon MRI and other useful sources in modelling.