Radioactive substances called radiotracers are used in positron emission tomography (PET)/computed tomography (CT) scanning to visualize cancer cell activity (metabolism). Standard PET/CT scanning uses radiolabelled fluorodeoxyglucose (FDG). In this study, researchers are evaluating a new type of PET/CT scanning that uses radiolabelled fluorothymidine (FLT).
The investigators are assessing FLT PET/CT scanning to see if it is useful for monitoring how patients’ tumors are responding to anticancer agents being evaluated in certain other clinical trials at Memorial Sloan Kettering. The amount of radiation that patients receive is small and is eliminated from the body in a few hours.