[Ga68]-MTP220

The goal of this research study is to develop a diagnostic tool to help with detection and diagnosis of head and neck cancer (HNC) and pancreatic cancer (PaC). This tool is called a "targeted PET tracer", or more specifically a drug named "[Ga-68]MTP220". The U.S. Food and Drug Administration (FDA) has not yet approved this drug, so researchers are conducting this research study to see if [Ga-68]MTP220 is safe and effective at diagnosing pancreatic cancer and head and neck cancer. FDA approval has been obtained for this study protocol by an Investigational New Drug (IND) application. Participants will receive a single injection of [Ga-68]MTP220 followed by PET/CT imaging at three points after they received the drug. These study procedures will take about 2.5 hours. Participants will also receive a follow-up phone call the day after receiving the drug to talk about any side effects they experienced.