Quality Assurance Tests of the TMS-Radix Treatment Planning System

The TMS-Radix treatment planning system by Helax has been used in clinical practice at the University Hospital in Uppsala for more than a year. As Uppsala was one of the two test sites for TMS, an extensive test program was undertaken before the system was used in the clinic. Five different therapy machines are in use at the University Hospital: one 60Co unit, three linear accelerators, and one microtron. The X-ray qualities available are 5, 6, 8, 16, and 21 MV, and the electron energies range from 5 to 22 MeV. All X-ray qualities and a number of electron energies between 8 and 20 MeV are now implemented in TMS and have been subjected to tests. This paper deals with tests of the dose calculation models for photon and electron beams.