X-RAYS DURING PREGNANCY

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Abstract
Contemporary radiobiological research has stimulated interest in and controversy over the magnitude of the radiation hazard associated with roentgen pelvimetry and other diagnostic procedures that expose the fetus to x-rays. Many aspects of the problem were discussed at a recent conference on the effects of radiation and other deleterious agents on embryonic development, sponsored by the biology division of the Oak Ridge National Laboratory, the proceedings of which will be published soon by Oak Ridge. Very little is known about the nature of whole-body radiation injury in the case of the fetus. It is probable that fetal blood-forming organs and other tissues are just as radiosensitive as adult structures and that comparable physiological disturbances occur. The present discussion is concerned only with genetic effects, particularly as they are manifested in the later development of the individual. Exposure of the fetus to sublethal doses of ionizing radiation may have two important

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