Titlebook: Clinical Radiotherapy Physics; Subramania Jayaraman,Lawrence H. Lanzl Book 2004Latest edition Springer-Verlag Berlin Heidelberg 2004 Charg

慢慢冲刷

Step 1: The First Impression Counts,will decay and when. This is because radioactive decay is a random process. Any radionuclide may decay in any given time interval with a certain probability, but not with any certainty. We can only predict the averages for a whole group, without being specific about a particular nuclide. Furthermore

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https://doi.org/10.1007/978-3-658-38324-4epends on the stopping power of the medium. A light particle such as an electron may follow a zig-zag, tortuous path, changing directions during several energy-diminishing encounters, as illustrated in Figure 6.1. The thickness of the medium needed for the entire energy of a particle to be absorbed

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https://doi.org/10.1007/978-3-658-04499-2 may take place. These different interactions become competing processes. The relative prevalence of any particular type of interaction depends on two major factors, the photon energy and the atomic composition of the medium. In some interactions, a part of the energy of the photon is transferred to

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Endemic

Fulminate

https://doi.org/10.1007/978-3-658-05653-7omprises both the primary radiation coming directly from a source and any secondary emissions (Compton electrons, scattered photons, characteristic X-rays, etc.) arising due to the interactions of the primary radiation with matter. The radiation-induced processes of ionization and excitation of atom

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https://doi.org/10.1007/978-3-658-23067-8gnal that can be interpreted to give the radiation quantity of interest. We already discussed the use of ionization chambers and calorimeters for this purpose in Chapter 11. In this chapter, we will provide more details on ionization chambers and also discuss other devices used for radiation detecti

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https://doi.org/10.1007/978-3-658-23067-8erapy machines, and accelerators were discussed in the earlier chapters. Any radiotherapy clinic may equip itself with one or more of these machines, suitably selected to meet its requirements. The quality (meaning the type, energy, and penetration) of the beam produced by any particular radiotherap

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