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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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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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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electromagnetic radiation (EMR). EMR is a form of energy that reveals its presence when it strikes the matter. Remote Sensing has a sensor which can detect the electromagnetic radiation coming from an object. Remote Sensing data also enables direct observation of the land surface or any other objects at repetitive intervals and therefore allow monitoring the changes occurring in it through aerial or satellite sensor. Electromagnetic Radiation: Emission of EMR (Electro-Magnetic Radiation) occurs from
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Being Cool Sources: 1. https://www.google.co.uk/#q=which+electromagnetic+waves+emitted+from+the+sun+produce+a+heating+effect http://www.universetoday.com/60065/radiation-from-the-sun/ 2. http://www.raytek.com/Raytek/en-r0/IREducation/Emissivity.htm?trck=emissivity http://www.keller-msr.com/temperature-pyrometers/emissivity-definition-and-influence-in-non-contact-temperature-measurement.php 3. http://www.gcsescience.com/pen10-matt-black.htm http://scienceline.ucsb.edu/getkey
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control the working speed of the developer with respect to the exposed silver bromide. The developer also contains a reducing agent. Electromagnetic Energy- The forms of energy propagated by wave motion as photons or discrete quanta. The forms of radiation have no matter associated with them‚ They differ widely in wavelength‚ frequency‚ and photon energy and have
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Many people who have skin cancer require surgery for effective initial treatment. However‚ there are several other nonsurgical options may be considered for the treatment of squamous cell and basal cell skin cancers such as topical medications‚ radiation therapy and photodynamic therapy. According to Dr. Anna Bar an Assistant Professor of Dermatologic Surgery at Oregon Health & Science University‚ there continues to be progress in nonsurgical treatments for skin cancer that are useful for people
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Section 1: What is radioactivity? Nuclear Radiation During radioactive decay‚ the unstable nuclei of these isotopes emit particles‚ or release energy‚ to become stable isotopes‚ as Figure 1 shows. After radioactive decay‚ the element changes into a different isotope of the same element or into an entirely different element. Recall that isotopes of an element are atoms that have the same number of protons but different numbers of neutrons in their nuclei. Different elements are distinguished
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