Inclusion Criteria:  Planned to undergo radiation treatment Age 3-11 years Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 at screening Parents or guardians with the ability to understand and the willingness to sign a written informed consent.  Exclusion Criteria:  Subjects with documented medical behavior conditions or other conditions necessitating anesthesia use Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that, in the opinion of the investigator, would limit compliance with study requirements. Subjects whose parents opt to not include them (the subject) in the clinical trial.