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In relation to the Doses and Sources of Radiation, give examples of Radioactive sources (non-sealed) in medicine for Medical Imaging.
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- Differentiate between the modes of action of ionizing radiationand ultraviolet radiation.Define briefly the term radioactivity.Name the four major classes of pesticides. What are the advantages and disadvantages of each type? CLASS OF PESTICIDE ADVANTAGE DISADVANTAGE Describe the similarities and differences between ionizing and nonionizing radiation. FORM OF RADIATION SIMILARITIES DIFFERENCES Ionizing Non-ionizing Define the term stochastic. How do the stochastic effects of ionizing radiation differ from the nonstochastic effects Match the term and its definition. ANSWER a. Becquerel A. SI unit measure of amount of radioactivity present in a material b. Coulomb/kg B. SI unit measure of amount of exposure to radioactivity c. Curie C. SI unit measure of absorbed dose of radiation d. Gray D. SI unit measure of radiation dose related to biological effect e. Rad E. Common unit measure of amount of radioactivity present in a material f. Rem…
- What changes in Radiation Protection criteria led to the use of Equivalent dose and Effective dose for radiation protection purposes?If 6 Gy of 250 kV x-rays kills 30% of tumor cells, and 4 Gy of a neutron beam kills the same percent of tumor cells, the RBE of the neutron beam is equal toDiscuss which of the following factors you consider is more important for radiation: quality, quantity, primary versus remnant (exit), thickness of body part or type of tissue (atomic number). Justify your answer. Explain in your post how the x-ray is produced. As you describe the process, be sure to identify what is the source of free electrons, and define the concepts of electron acceleration, focusing of electrons, electron deceleration, target interactions, and Bremsstrahlung radiation in terms of their relation to the process. Also, describe the photon interaction with matter in relation to the Compton effect, photoelectric absorption, coherent (classical) scatter, and attenuation by various tissues. Explain the characteristic of the x-ray beam with respect to the frequency and wavelength.