Abstract
This study provides a readily comprehensible hydrology-based model for estimation of the number of radioactive isotopes in the human body, intensity of radioactivity, and internal total exposure without the need for consideration of any complicated mechanism. For example, the International Commission on Radiological Protection has developed an exact model, which is regarded by radiologists as the standard method. However, that method is too complex for non-professional researchers of radiology, including hydrologists, to understand. In contrast, here we calculate the exposure attributable to the ingestion of radioactive isotopes by regarding the human body as a single tissue. Although this study does not involve consideration of a complicated mechanism, it does provide results with accuracy equal to the measured values of intensity of radioactivity obtained using a whole body counter.
