This volume is based upon presentations made to the 4th European Symposium on Radiopharmacology which was held under the auspices of the European Joint Committee on Radiopharma- ceuticals (ENMS / SNME) in Athens from March 28 - 31, 1984. The Medical Insurance Foundation of the National Bank of Greece (TYPET) sponsored this meeting and the Joint Committee would like to express their gratitude to the local organising committee: G. Limouris, M. Pierroutsakou, A. Sarris, A. Tzoulis and C. Binas. A word of thanks also to Mrs. Tineke Busker who prepared the camera ready copy. The meeting reflects...