The utilization of ionizing radiation for the therapy of malignancy traces back to the late nineteenth century, strikingly not long after Roentgen portrayed X-beams in 1895 and the utilization of brachytherapy after Marie and Pierre Curie found radium in 1898. Radiotherapy has become a standard treatment choice for a wide scope of malignancies. Lung cancer has been known to be the leading cause of cancer deaths in both men and women, accounting for 1.6 million deaths per year. With the constant advances in technology, it was thought that the number of cancer cases cured should increase. It was investigated that if the technology used for radiotherapy advanced then, the amount of non-small cell lung cancer cases that are cured will rise because doctors will have a better understanding of the illness if the technology is advancing with time. Whether looking to get radiation treatment or perhaps this subject is one of interest, then it is fully encouraged to continue with this study.