Figure 1
From: Pre-segmented 2-Step IMRT with subsequent direct machine parameter optimisation – a planning study
Head and neck case – DRR and fluences. Example (head and neck case B2) of digital reconstructed radiography (DRR) with projections of the most extended PTV and the spinal cord. (upper row). Fluences for several techniques for the same gantry angle at a head and neck case (lower row). Indicated are the segment numbers of all fields and the 2-Step IMRT-levels defined in Bratengeier et al. (2007)[6]