Radiation therapy of intrathoracic paraaortic lymph node metastases. Three-dimensional treatment planning

The elaboration of a CT-based three-dimensional radiation therapy plan is described, which is applicable for any location and extension of intrathoracic paraaortic lymph node metastases. Calculations for high energy photon beams from a 15 MeV linear accelerator have been performed. The treatment plan enables a high radiation dose in the target volume and adequate sparing of the spinal cord.