RecruitingBehavioural interventionQuantitative Imaging Biomarker Prospective Validation of Dynamic Contrast-enhanced MRI as a Metric of Orodental Injury After Radiotherapy (QI-ProVE-MRI)This research will focus on the prospective qualification and validation of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) candidate biomarkers (i.e., Ktrans and Ve) to assess the natural history of osteoradionecrosis (ORN) and treatment for this devastating complication related to irradiation of head and neck cancers. The investigations will also include assessment of DCE-MRI candidate biomarkers for pre-qualification as quantitative imaging biomarkers of soft-tissue structures.