Medicon `98 is the eighth in the series of regional meetings of the International Federation of Medical and Biological Engineering (IFMBE) in the Mediterranean. The goal of Medicon `98 is to provide updated information on the state of the art on medical and biological engineering and computing. Medicon `98 was held in Lemesos, Cyprus, between 14-17 June, 1998. The full papers of the proceedings were published on CD and consisted of 190 invited and submitted papers. A book of abstracts was also published in paper form and was available to all the participants. Twenty seven papers fall within the scope of INIS and are dealing with Nuclear Medicine,Computerized Tomography, Radiology, Radiotherapy, Magnetic Resonance Imaging and Personnel Dosimetry (eds).