Intensity-modulated radiotherapy (IMRT) is innovative RT planning and delivery technology with the ability to vary the intensity of radiation across a beam, allowing for increased conformity of RT dose around target volumes along with decreased dose delivered to normal structures. Tomotherapy uses an intensity-modulated beam which rotates around the patient as the patient is being translated longitudinally through the gantry and features the ability to acquire megavoltage CT (MVCT) images of target structures at each treatment. It is thought that Tomotherapy can plan and deliver more conformal RT with the added advantage of daily assessment of target and critical structure position via MVCT imaging.