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Software for radiation protection and internal dosimetry  



VMC dose calculation


The development of VMC dose calcuation began in 1999 in the IRD, and the current version was released in 2005. VMC dose calculation simulates mathematically the irradiation of the human body by various radiation sources, including point, ground, cloud or internal sources. The Equivalent dose is calculated for relevant tissues and the Effective dose is also calculated.

VMC dose calculation is especially useful to quickly estimate the doses from radioactive sourses in the case of emergencies or accidents. When a point source has been placed in a pocket, or near the body surface, VMC dose calculation can "zoom in" to the tissue region near the point source, to estimate the much larger doses to enable a prognosis of the deterministic radiation effects to this area.

VMC dose calculation has been extensively validated by comparing the results from the program with the doses measured in physical phantoms, and also by direct comparison with results generated using other Monte Carlo programs such as EGSnrc and MCNP.

The program can also be downloaded from the RADAR site

Download VMC dose calculation


The IAEA intercomparison

VMC dose calculation is a Windows based program, which facilitates the defining of the source geometry, radionuclide, exposure time and source position. It is possible to simulate point sources, ground, air or internal sources. For the air and ground contaminations, the photons are transported through the air before reaching the human phantom.

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VMC dose calculation was validated using the Alderson phantom. TLDs were placed inside the phantom, which was irradiated with a Cs-137 source. The dose to the TLD regions was calculated using VMC dc and the results compared with the measured values. VMC dose calculation was also validated against the results of other Monte Carlo programs, and is expected to give results within an uncertainty of 20%.