3. DESCRIPTION OF PROGRAM OR FUNCTION
InDose is an internal dosimetry code developed to enable dose estimations using the new biokinetic models (presented in ICRP-56 to ICRP71) as well as the old ones. The code is written in FORTRAN90 and uses the ICRP-66 respiratory tract model and the ICRP-30 gastrointestinal tract model as well as the new and old biokinetic models.
The code has been written in such a way that the user is able to change any of the parameters of any one of the models without recompiling the code. All the parameters are given in well annotated parameters files that the user may change and the code reads during invocation. As default, these files contains the values listed in ICRP publications.
The full InDose code is planed to have three parts: 1) the main part includes the uptake and systemic models and is used to calculate the activities in the body tissues and excretion as a function of time for a given intake. 2) An optimization module for automatic estimation of the intake for a specific exposure case. 3) A module to calculate the dose due to the estimated intake. Currently, the code is able to perform only it`s main task (part 1) while the other two have to be done externally using other tools. In the future we would like to add these modules in order to provide a complete solution for the people in the laboratory.
The code has been tested extensively to verify the accuracy of
its results. The verification procedure was divided into three parts:
1) verification of the implementation of each model, 2) verification
of the integrity of the whole code, and 3) usability test. The first
two parts consisted of comparing results obtained with InDose to published results for the same cases. For example ICRP-78 monitoring
data. The last part consisted of participating in the 3rd EIE-IDA
and assessing some of the scenarios provided in this exercise. These tests where presented in a few publications. It has been found that there is very good agreement between the results of InDose and published data.