Study on evaluating dose to fishes based on its anatomic model.

Here, an anatomic model of mullet is developed on sampling, dissection, and measurement on site. A Monte Carlo code is used to compute the energy-absorbed fraction in tissues and organs of the mullet, and dose rates are calculated. Some previous methods are selected for comparison. The results calculated by means of a newly developed anatomic model indicate that the dose rate to each tissue/organ is different, and dose rates to some tissues/organs are much larger than those calculated based on previous uniform models. This suggests that it is necessary to exploit an anatomic model if there are various concentration factors within the organism. Taking the organism as a whole, the anatomic model has smaller internal dose rates and middle external dose rates among these methods.