Graduate Thesis Or Dissertation
 

Tissue weighting factors for radiation protection : derivation and parametric analysis

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/rb68xh059

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  • Tissue weighting factors, w[subscript T], used to convert equivalent dose to effective dose, account for differences in radiosensitivity of various organs in the human body and allow users to compare individual organ detriment to whole body risk. They are explicitly calculated in ICRP 26, 60, and 103, although the methods of calculation, as well as the weighting factors themselves, vary greatly between reports. The ICRP 26 report bases its weighting factors solely on fatal cancer risk for eleven organs, whereas ICRP 60 and 103 use detriment (with unique definitions in each report) to calculate the tissue weighting factors for twenty‐two and twenty‐eight organs, respectively. Each new report introduces levels of uncertainty into the calculation of w[subscript T], which ultimately may reduce the significance of individual weighting factors. A review of the three calculational methods used in ICRP 26, 60, and 103 is covered, as well as an examination of the uncertainties introduced by each weighting factor parameter utilized in ICRP 103 and the total uncertainties of the various w[subscript T] values. Finally, the effective dose is calculated for several exposure scenarios using the ICRP 26 and 60 methodologies for comparison to ICRP 103 effective dose calculation and uncertainties thereof.
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file details MakinsonThesis.pdf 2017-10-20 Public Télécharger