Abstract Editorial Table of Contents Preface Main Points Executive Summary Glossary 1.Introduction 2. Specifications of the computational phantoms 3. Selection and segmentation of tomographic data 4. Modifications of segmented images to create reference computational phantoms 5. Description of the adult reference computational phantoms 6. Applications and limitations of the reference computational phantoms 7. References Appendix A: ID listings, medium, density, mass, minimum/maximum columns, rows and slices occupied by each organ/tissue (containing rectangular prism) and organ centres of mass. Appendix B: List of media and their elemental composition Appendix C: List of source regions, acronyms and ID numbers Appendix D: List of target regions, acronyms and ID numbers Appendix E: Distributions of depths of selected organs/tissues Appendix F: Chord-length distributions between selected organ pairs Appendix G: Cross-Sectional Images Appendix H: Selected Organ dose conversion coefficients - external photons Appendix I: Selected Organ dose conversion coefficients - external neutrons Appendix J: Selected Organ dose conversion coefficients - external helium ions Appendix K: Selected Specific absorbed fractions - photons Appendix L: Selected Specific absorbed fractions - electrons Appendix M: Summary of the CD Contents