Influence of measurement geometry on the estimate of {sup 131}I activity in the thyroid: Monte Carlo simulation of a detector and a phantom
Journal Article
·
· Health Physics
- Research Institute of Radiation Medicine, Minsk (Belarus)
An approach for evaluating the influence of measurement geometry on estimates of {sup 131}I in the thyroid from measurements with survey meters was developed using Monte Carlo simulation of radiation transport in the human body and the radiation detector. The modified Monte Carlo code, EGS4, including a newly developed mathematical model of detector, thyroid gland, and neck, was used for the computations. The approach was tested by comparing calculated and measured differential and integral detector characteristics. This procedure was applied to estimate uncertainties in direct thyroid-measurement results due to geometrical errors. 14 refs., 11 figs., 4 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 433044
- Journal Information:
- Health Physics, Vol. 72, Issue 1; Other Information: PBD: Jan 1997
- Country of Publication:
- United States
- Language:
- English
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