Magnetic Resonance Imaging (MRI) in the Assessment of Head and Neck Squamous Cell Carcinoma (HNSCC) Response

The purpose of this study is to see if new techniques of measuring HNSCC tumors with magnetic resonance imaging (MRI) can help predict how well the tumors will respond to combined chemotherapy and radiation treatment. The investigators hope to find a reliable method to determine whether or not a patient's cancer is responding to chemo-radiation early in their treatment using an MRI, such that that cancer treatments could be tailored to the individual more effective in the future. The MRI techniques include dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), diffusion-weighted magnetic resonance imaging (DW-MRI), and magnetic resonance spectroscopy (MRS). Participants will be subjected to two sessions of MRI scans: one before the initiation of their regular treatment and the second before their second cycle of chemotherapy. Each scanning session will last approximately 45 minutes.