Quantitative Imaging Biomarker Prospective Validation of Dynamic Contrast-enhanced MRI as a Metric of Orodental Injury After Radiotherapy (QI-ProVE-MRI)

"Researchers would like to test the accuracy of the MRI data being used for this study. If you agree, you will have 2 additional MRI scans within 2 weeks before Visit 1.~The first 90 participants who agree will be selected to have the following scans:~* 35 participants will be scanned 2 times on one MRI device (Device #1).~* 35 participants will be scanned 2 times on another MRI device (Device #2).~* 20 participants will be scanned 1 time on both MRI devices (Device #1 and #2). If you agree and you are chosen, the study doctor will tell you if you will have scans on~ 1. or 2 MRI devices."