Motion of Kids on Radiation Treatment

At Princess Margaret Cancer Centre, a comprehensive approach to help children stay still during radiation treatment (RT) such as audio-visual distraction (television) is routinely used. These techniques help reduce the need for sedation or general anaesthesia to keep children still to avoid the chance of missing the tumour during RT. This approach has not been systematically evaluated to determine its effectiveness at reducing movement of children receiving RT. The purpose of the study is to measure the movement of children between the beginning and the end of RT to see how much they moved during treatment.

Inclusion Criteria: * Patient (paediatric or adolescent) age 18 or under receiving RT without anaesthetic or procedural sedation (anaesthetic gas or intravenous sedative medication) Exclusion Criteria: * Patients receiving oral midazolam or ketamine are ineligible * Patient is receiving total body irradiation without CBCT