Figure 1
From: Investigation of the usability of conebeam CT data sets for dose calculation
(a) Axial slice of CATPhan® geometry acquired with the CBCT system and volumes of interest for each material insert: 1 Acrylic, 2 Air, 3 Polystyrene, 4 LDPE, PMP, 6 Teflon®, 7 Delrin®. (b) Example of volume definition for a pelvis patient: 8 air, 9 fat, 10 fluid, 11 femoral head.