RADIATION DOSE EFFECTS IN RELATION TO OBSTETRIC X-RAYS AND CHILDHOOD CANCERS

摘要: Abstract Epidemiological data from the Oxford Survey of Childhood Cancers has been analysed in respect in-utero exposure to X-rays during obstetric investigations. The risk cancer was greatest when first trimester. excess X-ray examination directly related fetal dose. It is suggested that this dose-response relationship fits with a previously published hypothesis cancers caused way are due propagation one cell whose controlling gene had experienced small but irreversible change at moment X-rays.