Biological effects of ultrasound: mechanisms and clinical implications National Council on Radiation Protection and Measurements (USA), Report 74 (1983) xiii + 266 pp, $1 5
This report contains the recommendations of the National Council on Radiation Protection of the USA. It covers the biological effects of ultrasound with special attention paid to clinical applications. It is intended to be a resource for ‘health professionals’ and others involved with, or interested in, the use of ultrasound. The first chapters of the report deal with the basic physics of ultrasound and wave propagation_ medical ultrasound fields, and ultrasonic biophysics. The applications which may involve human exposure to ultrasound are described in Chapter 5, and then three chapters describe observed biological effects of ultrasound in animal subjects, in plants, and in in vitro systems. The final two chapters summarize the evidence safety of clinical ultrasound and provide mendations for its continued safe usage. The basic science chapters should be clear to anyone physics and mathematics.
for the recom-
(2-4) are well written, and with a basic grounding in
It is a strength of this publication that the chapters on biological effects (6-8) make no attempt to be exhaustive, but rather draw on the better literature reports in an effort to illustrate effects seen. The existing literature is somewhat disparate, the choice of experimental systems largely reflecting the investigator’s own interests. and. in the main, not having been designed to answer the important questions of clinical safety. Chapter 9 of this report summarizes the information available pertaining to the safety question and also discusses the information that can be obtained from a mechanistic approach to the subject. The final chapter puts forward recommendations that would set a standard of excellence if acted upon. The recommendations cover research needs, equipment characterization. clinical practice and education for diagnostic ultrasound, therapeutic ultrasound usage and exposure criteria. This report is well written and easily read. It should provide a useful reference book both to the medically qualified ultrasound user. and to the physicist who needs to know about ultrasound. There are now a number of reviews of this type published on behalf of national or international bodies. This NCRP report compares favourably with the others, and although not as comprehensive as some, is probably both the most readable and the most clearly written.
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