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- W2023235784 abstract "Purpose: The skindose associated with radiotherapy is often of interest for clinical evaluation or examining the risk of late effects. Because the skindose is difficult to measure, it is of interest to have a general dosimetry system for estimating the skindose based on treatment parameters. Our objectives were to review the literature, conduct measurements to supplement the literature, and develop a general dosimetry system suitable for estimating the skindose for clinical situations or epidemiologic evaluation. Methods: The literature was supplemented with measurements and Monte Carlo simulations. In particular, the impact of a block tray on skindoses from a cobaltbeam was evaluated with TLD measurements. The skindose outside of the treatment field for MV beams as a function of field size and distance from the edge of the treatment field was examined with Monte Carlo. Using the entirety of available data, a general dosimetry system was developed in the form of a series of equations to evaluate the skindose based on treatment parameters including the Dmaxdose,treatment modality, and field size.Results: While there was little difference in skindose between MV beam energies, cobalt,electron beams, and orthovoltage produced substantially different skindoses. Within the treatment field, it was found that the skindose increased with field size, the presence of a block tray, and the obliquity of the incident beam to the patient's surface. Outside the treatment field, the skindose was highly elevated relative to the dose at depth, increasing with increasing field size and distance from the field edge to as much as a factor of 7. Conclusions: On the basis of the literature and the findings of this study we developed a set of general rules and equations that estimate the skindose for patients receiving radiotherapy." @default.
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- W2023235784 date "2010-06-01" @default.
- W2023235784 modified "2023-09-27" @default.
- W2023235784 title "SU-GG-T-610: Skin Dose during Radiotherapy: A Summary and General Estimation Technique" @default.
- W2023235784 doi "https://doi.org/10.1118/1.3469011" @default.
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