[Setup margin for head-and-neck cancer patients receiving 2D-2D and 3D image-guided intensity-modulated radiation therapy].

Introduction: Image-guided intensity-modulated radiation therapy is essential for oncology treatment of head-and-neck cancer patients.

Aim: MV-kV and CBCT modalities were compared in case of IGRT treatment for head-and-neck cancer patients. Setup error, setup margin (SM), imaging and evaluation times and imaging doses were analyzed.