Table 1 Outline of the survey
∙ Institution/name | |
∙ Equipment | |
 o type of accelerator, | |
 o energy, | |
 o beam delivery system, | |
∙ Treatment setup | |
 o patient position: lying, sitting, | |
 o immobilization, fixation device(s) used | |
 o methods used to ensure positioning reproducibility | |
 o methods used for recording patient positioning: XR, scan | |
 o image fusion (if used): technique, recording | |
∙ Delineation procedure | |
 o procedure for CTV(s) delineation | |
 o safety margins added around the CTV to define the PTV and to ensure its proper coverage | |
 o do you proceed separately for each beam to add the above-mentioned margins? | |
 o procedure for dose prescription/specification to the CTV-PTV | |
 o procedure for dose limitation/specification to OARs | |
∙ Beam delivery | |
 o one single fixed beam | |
 o several fixed beams | |
 o scanning beam | |
∙ Dosimetry | |
 o biological plan optimization | |
 o beam dosimetry: calibration, homogeneity | |
∙ Procedure for control and validation of the treatment plan before application to the first session | |
∙ What kind of record are stored at the end of the treatment? |