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Information × Registration Number 0299U004086, 0198U003162 , R & D reports Title Investigation of interaction of polydisperse systems, which abnormally attenuate ionizin radiation photon beam, and biologic media. popup.stage_title Head Pylypenko M.I., Registration Date 02-06-2000 Organization Grigor'ev Institut for Medical Radiology popup.description2 Object of investigation: polydisperse media; skin, muscles and epithelium of cavitary organs of 70 rats. Objective: Peculiarities of biological reaction of interstitial tissue (skin, epithelium of cavitary organs) and internal media of the organism for contact with polydisperse systems based on tungsten, barium sulphate and zinc oxide. Methods: x-ray, dosimetric, morphological. Obtained result: Biological influence in the surrounding tissues of threads with polydisperse systems (tungsten, barium, zinc based) with increased ability to attenuate radiation has been studied. According to the reaction of the contacting tissue non-toxic materials which can be used in practice were chosen. Higher x-ray contrast of small-disperse fractions of polydisperse barium connected with more marked ability was revealed. The use of small-disperse samples increases diagnostic informativity at x-ray study of the cavitary organs (gastrointestinal tract, urinary bladder). The experiments demonstrated marked toxic action of m edical barium sulphate and absence of toxicity of small-dispersion samples. The area of use: radiation protection and x-ray diagnosis in medicine and industry. Product Description popup.authors popup.nrat_date 2020-04-03 Close