The value of PET-CT fusion in three-dimensional conformal radiotherapy of nonsmall cell lung cancer

Three dimensional conformal radiotherapy is the important radiotherapy technique for nonsmall cell lung cancer.In the curse of making the plan of the three dimensional conformal radiotherapy of non-small cell lung cancer,PET-CT has played an important role in the delineation of tumor target volume,optimization of radiation planning,evaluation of radiation effect and the treatment monitoring.