RecruitingDrug trialNano-SMART: Nanoparticles With MR Guided SBRT in Centrally Located Lung Tumors and Pancreatic CancerThis research study is being done to help determine the safety and efficacy of gadolinium based nanoparticle, Activation and Guidance of Irradiation X (AGuIX), used in conjunction with MR-guided stereotactic body radiation therapy (SBRT) in the treatment of pancreatic cancer and lung tumors.