Estimation of hand exposure due to potential radiopharmaceutical contamination

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F18%3A00326053" target="_blank" >RIV/68407700:21460/18:00326053 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Estimation of hand exposure due to potential radiopharmaceutical contamination

Original language description

Goal of radiation protection is the introduction of reliable provisions aimed at ensuring protection of workers. The approach consist in identifying the requirements for radiation protection based on the evaluation of the distribution of the skin exposure in terms of Hp(0.07) on hands during manipulation with radiopharmaceuticals. The assessment of the dose distribution relies on the comparison of results obtained from the monitoring of 3 workers engaged in similar operations, multiple measurements of a selected worker or using the MC simulating individual operations which are considered important with respect to exposure of the worker. This method of assessing various techniques of handling radiopharmaceuticals permit not only to detect potential contamination but also to determine the exposure of the skin at locations where dose mapping has not been performed. This method of assessing the manipulation with radiopharmaceuticals taking into account objectives of radiation protection has been examined for 3 workers who have shown a significant change in the dose distribution on hands comparing with the remaining two measurement cycles. The first worker prepared 131I, the second prepared 18F while the third one injected the 18F to the patient. These workers were not aware of the causes of excessive exposure and therefore a simulation of the exposure was performed using the MC method basic operations of individual manipulations with the sources and specifying the location of the maximum local skin exposure on the hands and additionally also is able to determine the overall exposure of the hands as an entire organ. Using this method, it has been found that the first worker was probably contaminated, the second worker has possibly received excessive exposure to the part of his finger through the gap in the shield, and the third person during the administration of radiopharmaceuticals carried out several non-standard procedures caused by the patient’s health conditions.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

30305 - Occupational health

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů