Over the last few decades, advances in radiotherapy (RT) technology have improved
delivery of radiation therapy dramatically. Advances in treatment planning with
the development of image-guided radiotherapy and in techniques such as proton
therapy, allows the radiation therapist to direct high doses of radiation to the
tumour. These advancements result in improved local regional control while
reducing potentially damaging dosage to surrounding normal tissues. It is
important for radiologists to be aware of the radiological findings from these
advances in order to differentiate expected radiation-induced lung injury (RILD)
from recurrence, infection, and other lung diseases. In order to understand these
changes and correlate them with imaging, the radiologist should have access to
the radiation therapy treatment plans.