Parotid sparing adaptive radiotherapy in head and neck cancer patients: A study evaluating resource intensiveness and impact on quality of life.

e24037 Background: Anatomical changes during the course of parotid sparing IMRT for head and neck cancer can lead to an increase in the actual dose absorbed by the parotid glands, which may be controlled with the use of interval adaptive replanning. In this prospective assessment of adaptive replanning for parotid dose changes, we explored the feasibility of carrying out adaptive replanning based on predefined objective dosimetric criteria at...