Preface. Introduction. The biological basis of the commission's policy. The special application of the commission's policy to medicine. The Quantification of Radiation Dose and Risks. Dosimetric quantities. Risk-based quantities and estimates of risk from postnatal exposure. Estimates of risk from prenatal exposure.

The Framework of Radiological Protection. The Justification of a Practice. The generic justification of a defined procedure. The justification of a procedure for an individual patient. The Optimisation of Protection. General principles. The use of constraints in optimisation. The optimisation of protection in medical exposure.

The optimisation of protection in occupational exposure. Individual Dose Limits. Radiation Protection by Intervention. Practical Methods of Protection. Occupational exposure. Public exposure. Exposure of volunteers. Operational guides and reference levels.

Accidents and Emergencies. Accident prevention. Emergency plans and the mitigation of consequences. Institutional Arrangements. Responsibility and authority. Management requirements. Education and training. Compliance with the intended standard of protection.

References. Annex A. Summary of the 1990 recommendations. Annex B. The biological effects of ionising radiation.