Preface. Subject dose in radiologic imaging: an introduction (D.A. Bradley et al.). Balancing patient dose and image quality (C.J. Martin, D.G. Sutton, P.F. Sharp). Measurement of image quality in diagnostic radiology (C.J. Martin, P.F. Sharp, D.G. Sutton). Use of the concept of energy imparted in diagnostic radiology (G.A. Carlsson et al.). Somatic effects in nuclear medicine and radiology (F.J. Overbeek et al.). Radiation dosimetry in nuclear medicine (M.G. Stabin et al.). Exposure of critical groups to nuclear medicine patients (P.J. Mountford, M.J. O'Doherty). Patient dosimetry measurement methods (K. Faulkner, D.A. Broadhead, R.M. Harrison). Characteristics of radiation detectors for diagnostic radiology (L.A. Dewerd, L.K. Wagner). Performance assessment of patient dosimetry services and X-ray quality assurance instruments used in diagnostic radiology (S. Green et al.). Impact of new digital X- and gamma-ray imaging systems upon patient doses (R. Speller et al.) Dosimetry for optimisation of patient protection in computed tomography (K.A. Jessen et al.). Radiation dose in interventional fluoroscopic procedures (R.A. Geise, T.J. O'Dea). Breast dosimetry (D.R. Dance, C.L. Skinner, G. Alm Carlsson). Estimating mean glandular dose using propriety mammography phantoms (L.D. Hartley, B.J. Cobb, D.E. Hutchinson). Radiation exposure in bone mineral density assessment (C.F. Njeh et al.). A compliance testing program for diagnostic X-ray equipment (D.E. Hutchinson, B.J. Cobb, C.S. Jacob). Patient dosimetry activities in the United States: the nationwide evaluation of X-ray trends (NEXT) and tissue dose handbooks (O.H. Suleiman, S.H. Stern, D.C. Spelic). Diagnostic medical exposures in the UK (P.C. Shrimpton, B.F. Wall, D. Hart). Radiation protection and quality assurance in diagnostic radiology - An IAEA coordinated research project in Asia and Eastern Europe (M. Oresegun et al.).