RecruitingPhase 1Drug trialFluorine-18-AlphaVBeta6-Binding Peptide Positron Emission Tomography in Metastatic Non-Small Cell Lung CancerThis study investigates fluorine-18-AlphaVBeta6-BP (\[18F\]-αvβ6-BP) as a Positron Emission (PET) imaging agent in Non-Small Cell Lung Cancer (NSCLC) patients with brain metastases. Investigators hypothesize that \[18F\]-αvβ6-BP PET/Computed Tomography (CT) is a sensitive tool for disease assessment in patients with metastatic NSCLC, including those with brain metastases.