Pasquevich, Ian L. (2021) Cálculo de factores de conversión para la estimación de la tasa de dosis en piel debido a contaminación superficial / Calculation of conversion factors to estimate the dose rate on skin due to surface contamination. Maestría en Física Médica, Universidad Nacional de Cuyo, Instituto Balseiro.
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Resumen en español
El uso de radioisótopos en servicios de medicina nuclear, así como también en reactores de investigación, puede producir contaminaciones en piel debido a accidentes o descuidos del personal. Se ha mostrado que esta contaminación contribuye considerablemente a la dosis total en piel recibida por los técnicos en medicina nuclear, pudiendo exceder fácilmente el límite de 500 mSv/año establecido por la normativa vigente. Para evaluar la severidad de la contaminación es necesario estimar la dosis en piel a través del uso de factores de conversión de tasa de dosis en piel adecuados. Para poder determinar los factores apropiados es importante estudiar la in fluencia del área de contaminación, del espesor epidérmico y de la absorción percutánea sobre los mismos. En este trabajo se utilizaron simulaciones Monte-Carlo para el estudio y cuanticación de los factores de conversión dosimétricos de 15 radioisótopos. Los resultados mostraron que la dosis absorbida en piel es signicativamente in- fluenciada por el espesor epidérmico y la absorción percutánea, pudiendo diferir hasta en dos órdenes de magnitud con respecto a la magnitud operacional H´(0.07,0º).
Resumen en inglés
The use of radioisotopes in nuclear medicine services, as well as in research reactors, can lead to skin contamination due to accidents or staff oversight. This contamination has been shown to contribute considerably to the total skin dose received by nuclear medicine technicians, and can easily exceed the limit of 500 mSv/year established by current regulations. To assess the severity of contamination, it is necessary to estimate the skin dose through the use of suitable skin dose rate conversion factors. In order to determine the appropriate factors, it is important to study the in fluence of the contamination area, the epidermal thickness and the percutaneous absorption on them. In this work, Monte-Carlo simulations were used to study and quantify the dosimetric conversion factors of 15 radioisotopes. The results showed that the absorbed dose to the skin is signicantly in fluenced by epidermal thickness and percutaneous absorption, and can differ by up to two orders of magnitude with respect to the operational magnitude H´(0.07,0º).
| Tipo de objeto: | Tesis (Maestría en Física Médica) |
|---|---|
| Palabras Clave: | Skin; Piel; Contamination; Contaminación; Monte Carlo Method; Método de Monte Carlo; Doses; Dosis; [Conversion factor; Factores de conversión] |
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| Materias: | Medicina > Protección radiológica del paciente |
| Divisiones: | Gcia. de área de Energía Nuclear > Gcia. Coordinación Centro Atómico Bariloche > Gestión y aplicación del conocimiento > Protección ambiental y radiológica |
| Código ID: | 954 |
| Depositado Por: | Marisa G. Velazco Aldao |
| Depositado En: | 30 Jul 2021 08:25 |
| Última Modificación: | 30 Jul 2021 10:46 |
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