diagnostics Article Evaluation of the Performance of 18F-Fluorothymidine Positron Emission Tomography/Computed Tomography (18F-FLT-PET/CT) in Metastatic Brain Lesions Alexandra Nikaki 1,2,3,*, Vassilios Papadopoulos 4, Varvara Valotassiou 2, Roxani Efthymiadou 3,5, George Angelidis 2, Ioannis ...