Transcription of 3. SUMMARY OF HEALTH EFFECTS OF IONIZING RADIATION
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3. SUMMARY OF HEALTH EFFECTS OF IONIZING RADIATION
IONIZING RADIATION 81. 3. SUMMARY OF HEALTH EFFECTS OF IONIZING RADIATION . INTRODUCTION. IONIZING RADIATION is a form of RADIATION with sufficient energy to remove electrons from their atomic or molecular orbital shells in the tissues they penetrate (Borek 1993). These ionizations, received in sufficient quantities over a period of time, can result in tissue damage and disruption of cellular function at the molecular level. Of particular interest is their effect on deoxyribonucleic acids (DNA). A special issue to consider when examining the HEALTH EFFECTS caused by IONIZING RADIATION is the concept of dose and dose rate. The dose delivered to tissue from IONIZING RADIATION can either be acute (the energy from the RADIATION is absorbed over a few hours or days) or chronic (the energy is absorbed over a longer period of months, years, or over a lifetime). The dose becomes particularly important when the individual is exposed is to radioactive materials inside the body.
(“Levels of Significant Exposure to Radiation and Radioactive Material”) in this profile. For example, Table 8-1 lists the observed health effects from radiation and radioactive material using inhalation as the route of exposure. Entry 109 shows a study in which Beagle dogs were exposed for 2 to 22 minutes to 90SrCl 2. Although these ...
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