The PMOD VOI tools allow constructing VOIs which are more complex than supported by DICOM RT structure set (RTSS) definition. The Make DICOM RTSS compatible function located in the VOI tools panel converts the VOI representation into a form compatible with RTSS.
For instance, VOIs defined as analytic spheres are converted into a polygon representation. The RTSS compatible can then be used by other imaging workstations or radiotherapy (RT) planning systems. Note that the conversion is also supported as part of the DICOM RTSS saving functionality.