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Book reviews

Organ Doses from Medical X-ray Examinations Calculated Using Monte Carlo Techniques. NRPB, R186. By D. G. Jones and B. F. Wall, pp. 87, 1985 (HMSO, London), £6.00. ISBN 0–85951–254–1A National Survey of Doses to Patients Undergoing a Selection of routine X-ray Examinations in English Hospitals. NRPB, R200. By P. C. Shrimpton, B. F. Wall, D. G. Jones, E. S. Fisher, M. C. Hillier, G. M. Kendall and R. M. Harrison, pp. 169, 1986 (HMSO, London), £9.00. ISBN 0–85951–275–4An Update on the Frequency of Medical and Dental X-ray Examinations in Great Britain—1983. NRPB, R201. By B. F. Wall, M. C. Hillier and G. M. Kendall, pp. 29, 1986 (HMSO, London), £4.00. ISBN 0–85951–276–2

This excerpt was created in the absence of an abstract.

These three books are a natural sequence which gives the information to calculate the population radiation dose from X-ray diagnosis in Great Britain. The first, R186, recalculates the organ doses at various kilovoltages and radiographic projections. This has, of course, been done before. This work uses refinement of the mathematical, Monte Carlo phantom. The allusion to gambling contained within the name arises from the use of random sampling of probability distributions—one million histories were run on the computer for each field chance must have been defeated. The result gives, compared with earlier studies, a set of data more comprehensive with regard to the list of organ doses, and with an increased number of radiographic projections.