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Elizabeth Farris

on 29 March 2011

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Transcript of X-RAYS

The Science Behind X-Rays. Definition: electromagnetic radiation similar to that of visible light, but of much shorter wavelength X rays are sometimes called Roentgen rays after Wilhelm Konrad Roentgen, who discovered them in 1895. Roentgen called them X rays because the symbol X stands for the unknown and he was unable to determine the nature of the radiation. Jobs Radiologist A physician who specializes in the diagnosis and treatment of disease by X rays. Properties Strong, deeply penetrating, and highly destructive rays with short wavelengths are called hard X rays. Those with longer wavelengths and less penetrating power—the type used in medical and dental diagnosis—are known as soft X rays. •Like radio waves and other electromagnetic radiation, X rays have a wide range of wavelengths X rays are an invaluable tool in medicine, technology, and scientific research. •The ability of X rays to penetrate depends not only on their wavelength, but also on the density and thickness of the substance. Uses In Medicine X rays help dentists detect diseases of the teeth Doctors use X rays to locate bullets and other foreign objects within the body and to guide them in setting broken bones X-Rays are also used to detect cancer, ulcers, kidney stones, and other abnormalities •X rays can halt the growth of cells and even destroy them altogether. They are used to destroy benign and malignant tumors. X rays have also been used in the treatment of leukemia and bursitis. In Industry X rays are used to inspect canned goods and other packaged products. A conveyor carries the goods past a beam of X rays. If a container is improperly filled, or if it contains a foreign substance, the X rays set off an alarm or set into action a device that removes the container from the conveyor. X rays are similarly used to separate beryl from granite and to inspect airplane and automobile parts, rubber goods, plastics, metal castings, and a variety of other products. •Customs officers and airport security personnel use X rays in examining luggage and packages to check for weapons or smuggled articles X rays have also been used to learn whether paintings attributed to noted painters are authentic. Sometimes they have revealed changes made in the original work, or an earlier painting under the one that appears on the surface. DANGERS!!! Because X rays can kill living cells, they must be used with extreme care. When improperly used they can cause severe burns, cancer, leukemia, and cataracts. X-Rays can speed aging, reduce immunity to disease, and bring about disastrous changes in the reproductive cells Lead screens, sheets of lead-impregnated rubber, and leaded glass are used to shield patients and technicians from undesired radiation. A number of minor doses over a number of years A large dose at one time X-Rays can be a very useful instrument, but keep in mind the harmful effects of X-Rays. The End :)
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