Applications of Fluorodeoxyglucose PET/Computed Tomography in the Assessment and Prediction of Radiation Therapy-related Complications.

One of the most important aspects of cancer treatment is radiation therapy, which is used for a wide range of malignancies. However, this treatment modality has side effects that impose the patient to increased risks of mortality and morbidity. Total dose, fraction size, and duration of radiation therapy are among the factors contributing to toxicities. In recent decades, fluorodeoxyglucose (FDG)-PET/computed tomography (CT) has been extensively used for diagnosis, prognostication, response to treatment assessment, and management of cancers and is currently a standard modality for many cancers. This article discusses the role of PET/CT, and especially FDG-PET/CT, in radiotherapy complications.