Fig. 2From: Contouring practices and artefact management within a synthetic CT-based radiotherapy workflow for the central nervous systemChanges in the way CTV is cropped between the CT-based/MR-assisted workflow (Ib) and the MR-only workflow both with adjustments (IIb) and without(IIIb). The effect on the PTV is shown in Ic, IIc and IIIcBack to article page