Fig. 1

VMAT plan example. 69 year old male patient with multifocal glioblastoma treated at 5 foci with 60 Gy (2 Gy × 30) and concomitant temozolomide chemotherapy. Axial (A), coronal (B) and sagittal (C) plane of VMAT plan with PTV (red), 60 Gy isodose line (yellow), 57 Gy isodose line (green), 45 Gy isodose line (light blue), 35 Gy isodose line (blue) and 25 Gy isodose line (dark blue)