For example, is always the absorbed dose in the bladder wall of 4 years-children upper than in 8 years-children? is there any exception in the absorbed dose in these organs with wall and content or they are exactly like it in other organs for example kidneys?
Dear colleague,
Sorry for the late answer, I don't connect here frequently.
If I look at 177Lu S values from OLINDA V1, for UB content to UB wall:
- 5 YO: 1.85 10-4 mGY/MBq.s
- 10 YO: 1.17 10-4 mGY/MBq.s
This is normal, as the model is smaller, since most of the irradiation is from non penetrating radiations, therefore the same energy is absorbed in a smaller volume, and therefore the absorbed dose increases.
This is a general trend, probably less pronounced for hollow organs but this remains to be seen.
Then obvioulsy the cumulated activity should taken into account, as theS value basically considers the same number of decay in the 2 models, which may not be true...
Best regards,
Manuel
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