STUDIES ON EFFECTIVE UTILIZATION OF X-RAY ENERGY USING INTENSIFYING SCREENS
نویسندگان
چکیده
منابع مشابه
An in-vivo study on the energy dependence of X-ray biological effectiveness
Background: The International Commission on Radiological Protection (ICRP) has attributed the same relative risk for X and gamma radiations of all energies. Several studies have proven that the biological effect of low energy photon is more than that of higher ones. The assessment of risks is important due to the wide use of low energy X-rays for mammography screening and other diagnostic appli...
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These experiments indicate that the direct action of x-rays in more powerful doses than can be applied therapeutically is somewhat injurious to tumor cells, but by no means destroys them. Experiment 1 also indicates that the cancer cells establish a resistance to the x-rays after repeated doses. This harmonizes with the experience of clinicians who have succeeded in checking cancerous growths f...
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I review the contribution of Chandra X-ray Observatory to studies of dark energy. There are two broad classes of observable effects of dark energy: evolution of the expansion rate of the Universe, and slow down in the rate of growth of cosmic structures. Chandra has detected and measured both of these effects through observations of galaxy clusters. A combination of the Chandra results with oth...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1987
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00001364027