Intensity-modulated radiotherapy (IMRT)

Radiotherapy will be given to the patients only as intensity modulated radiotherapy (IMRT) and must be used for the entire course of treatment. Intensity-modulated RT is planned using two commercially available planning systems: KonRad (Siemens OS) for step-and-shoot applications or Tomotherapy^®. IMRT hence is delivered either at a 6 MV-linear accelerator (step-and-shoot technique) or at a 6 MV tomotherapy unit to a total dose of 50 Gy in 2 Gy/fraction. IMRT image guidance consists of MV cone-beam CTs which are taken into account for the calculation of the total applied dose.