Fig. 1From: Feasibility study of volumetric modulated arc therapy with Halcyon™ linac for total body irradiationThe planning target volume (PTV) includes the entire body (yellow segment) trimmed to 3 mm below the body (red segment). Furthermore, the PTV is divided into two structures at 14 cm from the center in left–right direction as PTV-BODY and PTV-ARMBack to article page