A study on the conversion coefficients of equivalent bladder dosage based on Monte Carlo simulation
By calculating the dose estimation coefficients for bladder phantoms with varying volumes and equivalent geometric shapes, this study offers guidance for the efficient and accurate assessment of risk organ doses 18F imaging. Based on the modeling of bladder phantoms with four different equi...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
VINCA Institute of Nuclear Sciences
2025-01-01
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| Series: | Nuclear Technology and Radiation Protection |
| Subjects: | |
| Online Access: | https://doiserbia.nb.rs/img/doi/1451-3994/2025/1451-39942501053T.pdf |
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| Summary: | By calculating the dose estimation coefficients for bladder phantoms with
varying volumes and equivalent geometric shapes, this study offers guidance
for the efficient and accurate assessment of risk organ doses 18F imaging.
Based on the modeling of bladder phantoms with four different equivalent
geometric shapes, and considering possible treatment conditions, the Monte
Carlo method was used to simulate and calculate the absorbed doses and dose
conversion coefficients of bladder phantoms of different shapes and sizes.
The results show that the absorbed dose of the bladder phantom significantly
decreases with the increase of bladder volume, and the absorbed dose of 70
mL is about three times that of 270 mL. The absorbed dose of the conical
bladder phantom is significantly different from other shapes, with a relative deviation of 6 to 30 times that of other shapes. The ratio of bladder
wall volume to surface area of the conical bladder phantom is significantly
different from other shapes, with a relative deviation of 5 to 20 times
that of other shapes. Therefore, when using bladder phantoms to calculate
dose estimation coefficients, it is necessary to consider not only the ratio
of phantom volume to surface area but also the actual shape and volume of
the bladder. |
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| ISSN: | 1451-3994 1452-8185 |