What is electromagnetic radiation? Electromagnetic energy is a term used to describe all the different kinds of energies released into space by stars such as the Sun. These kinds of energies include some that you will recognize and some that will sound strange. They include: * Radio Waves * TV waves * Radar waves * Heat (infrared radiation) * Light * Ultraviolet Light (This is what causes Sunburns) * X-rays (Just like the kind you get at the doctor’s office) * Short waves
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scientists give a bunch of types of radiation when they want to talk about them as a group. Radiation is energy that travels and spreads out as it goes‚ visible that comes from a lamp in your house and radio waves that come from a radio station are two types of electromagnetic radiation. Other examples of EM radiation are microwaves‚ infrared and ultraviolet light‚ X-rays and gamma-rays. Hotter‚ more energetic objects and events create higher energy radiation than cool objects. Only extremely hot
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Radiography is the most familiar type of radiation technique and it uses electromagnetic radiation instead of visible light and this type uses the smallest amount of radiation. Electromagnetic radiation is produced when charged particles of sufficient energy hit a material. Computerized Tomography commonly known as a CT scan‚ during this procedure the patient ties on the table and enters a ring-shaped scanner and this type uses the highest dose of radiation because so many images are taken at once
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has benefitted the world of medicine and science by discovering a way to treat cancer with radiation‚ developing nuclear plants to produce electricity‚ and aiding in the advancements of technology used in the medical field.
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When these dust particles are inhaled‚ radiation is delivered to the nose‚ pharynx‚ and tracheobronchial tree. Where the dust particles are deposited‚ the radiation dose delivered
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died at the time from a coronary thrombosisc. Acute radiation syndrome (ARS) was originally diagnosed in 237 people on-site and involved with the clean-up and it was later confirmed in 134 cases. Of these‚ 28 people died as a result of ARS within a few weeks of the accident. Nineteen more subsequently died between 1987 and 2004 but their deaths cannot necessarily be attributed to radiation exposured. Nobody off-site suffered from acute radiation effects although a large proportion of childhood thyroid
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which were primarily used for imaging anatomy that required relatively higher doses of radiation. These units also worked off of a large focal spot which decreases the detail of the image. This was not ideal for imaging something as minute as a breast calcification. In the 60’s direct exposure x-ray film was the film of choice. This film often required a long exposure time which causes a higher dose of radiation to the
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exposed radiation was enormous‚ “accident of 1986 released vast quantities of radioactive materials and significantly contaminated about 200‚000 square kilometers of land” (Mousseau). Acute radiation syndrome caused the death of over 30 Chernobyl plant workers and first responders a few days and weeks after initial exposure. Per the NRC and UNSCEAR “More than 6‚000 cases of thyroid cancer may eventually be linked to radiation exposure in Ukraine‚ Belarus and Russia” (Lallanilla). Acute radiation is an
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plane and in other planes (sections) and with inhomogeneity corrections‚ when appropriate. The computer planning system can develop digitally reconstructed radiographs (DRRs) that give beams-eye-views of the radiation fields. 6. Dosimetry. Dosimetry is calculation of the amount of radiation dose absorbed by the patient. Beam data for treatment units are available as depth dose charts that allow simple dose calculation For simple field arrangements (single fields and parallel opposed fields)‚ it
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Wea`am Mohammad Al-jarie Dr. mokhleed zaza physics Medical applications of x-ray Introduction: X-radiation (composed of X-rays) is a form of electromagnetic radiation. X-rays have a wavelength in the range of 0.01 to 10 nanometers‚ corresponding to frequencies in the range 30 petahertz to 30 exahertz (3×1016 Hz to 3×1019 Hz) X-rays up to about 10 keV (10 to 0.10 nm wavelength) are classified as "soft" X-rays‚ and from about 10 to 120 keV (0.10 to 0.01 nm wavelength) as "hard" X-rays‚ due
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