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    • 21st Annual Phi Kappa Phi Student Research and Fine Arts Conference (2020)
    • 21st Annual PKP Student Research and Fine Arts Conference: Oral Symposia VI
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    Feasibility of Reusable Radiochromic Plastics as Dosimeters

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    Authors
    Recht, Maxwell
    Inglett, Chase
    Hauger, Joseph
    Newton, Joseph
    Adamovics, John
    Issue Date
    1/31/2020
    URI
    http://hdl.handle.net/10675.2/623078
    
    Metadata
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    Abstract
    New developments in the field of radiotherapy have created extremely effective and efficient procedures for the treatment of tumors. Such developments require complex radiotherapy systems and plans which have ultimately improved the successfulness of treatments and the options available to patients. However, these advanced treatments present challenges for current dosimetric verification techniques which struggle to keep up. We will be examining radiochromic plastics as a way of addressing this conflict. Radiochromic plastics are synthetic materials whose optical properties change upon absorption of dose. The color darkens when dose is absorbed, and the change in optical density is proportional to the dose absorbed. We examine a formulation which is designed to clear its response slowly after irradiation to determine if the formulation is reusable after it clears. If upon reirradiation the dose response remains linear, then reusability is an option. Our results show that the response remains linear over a range of five irradiations and a timespan of two years, but sensitivity drops around 20% after the first reirradiation and less than that upon further irradiation. The plastics clear at an exponential rate, but the time it took to clear increased after each reirradiation. These results suggest that a long-term reusable dosimeter is possible. Data on a faster clearing formulation will also be presented.
    Affiliation
    Biological Sciences
    Chemistry and Physics
    Chemistry
    Description
    Presentation given at the 21th Annual Phi Kappa Phi Student Research and Fine Arts Conference
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    21st Annual PKP Student Research and Fine Arts Conference: Oral Symposia VI

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