The goal of this study is to test whether chemotherapy guided by a new imaging method named DCE-MRI can more effectively reduce a pancreatic tumor, enabling curable surgery, over the conventional method when a tumor is categorized as borderline resectable pancreatic cancer. UAB radiological research team has been studying a cutting-edge imaging technique named dynamic contrast-enhanced magnetic resonance imaging, or DCE-MRI, for over 10 years. This technique has been globally used to calculate the blood flow of various tissues, including tumors. Blood flow often serves as a critical indicator showing a disease status. For example, a pancreatic tumor typically has low blood flow, so it can be used as an indicator to identify the presence of a pancreatic tumor. In addition, an effective therapy can result in the increase of blood flow in a pancreatic tumor during the early period of treatment. Therefore, the investigators may be able to determine whether the undergoing therapy is effective or not by measuring the change of blood flow in the pancreatic tumor and deciding whether to continue the therapy or try a different one.