... section, X is the depth in matter. 3.1.1 Neutron scattering Neutron scattering include elastic scattering and inelastic scattering. In the former situation, the total kinetic energy of the system ... included to assist in definition of target volumes. FDG PET-CT, if available, was also included in the treatment planning. The Gross Tumor Volume (GTV), Clinical Target Volume (CTV), Planning ... were outlined on all CT slices in which the structures exist. 2.2.3 Volumes The GTV was defined as all known gross disease determined from CT, clinical information, endoscopic findings, FDG...