Primaty lung cancer was studied by 99m Tc(Ⅴ)-DMSA and 99m Tc-MIBI imaging in 30 cases. The results showed that the sensitivity of 99m Tc(Ⅴ)-DMSA and 99m Tc-MIBI was 90% and 76.7% respectively
the positive rate of combined imaging was 96.7%. Also the uptake ratio of squamous-cell carcinoma was higher than other types of primary lung cancer in both 99m Tc(Ⅴ)-DMSA and 99m Tc-MIBI.