Image-guided radiotherapy (IGRT) gives 3-dimensional “sight” to physicians, allowing them to better target tumors while minimizing the effect of radiation on surrounding tissues and organs.

With IGRT, radiation oncologists possess tools that can better account for the uncertainties involved in setting up patients for fractionated radiation delivery. Additionally, IGRT allows for the monitoring of changes in tumor size, shape and position due to treatment and normal physiological processes such as breathing and bowel movements.