Fig. 4From: Novel rotatable tabletop for total-body irradiation using a linac-based VMAT techniquePlanning principle of VMAT TBI. Optimization of FFS plan with an additional beam (a) that is deleted after optimization (b); this approach leads to a broad and smooth dose wash-out at the FFS-HFS junction area. The FFS dose is used as a bias for the optimization of the HFS plan (c), resulting in a homogenous summation dose in the whole body (d)Back to article page