Histopathologic validation of 3′-deoxy-3′-18F-fluorothymidine PET for detecting tumor repopulation during fractionated radiotherapy of human FaDu squamous cell carcinoma in nude mice18F-FLT PET repopulation -->

18F-FLT parameters were in good agreement with Ki-67 and BrdUrd Li. These results may support a potential role for 18F-FLT PET in real-time detection of tumor repopulation during fractionated radiotherapy.