Adaptive radiation therapy is a treatment approach that uses frequent imaging to compensate for anatomical differences that occur during the course of treatment. Images are taken daily, or almost daily. When significant changes are observed, replanning is considered. Naturally, the treatment planning system will have a critical role in this approach. RaySearch has collaborated with leading cancer centers worldwide, such as Princess Margaret Hospital in Toronto, Canada, to pioneer adaptive planning. As a result, the RayStation® treatment planning system is specifically designed to make adaptive therapy faster and easier in clinical practice. It includes modules for dose tracking and adaptive replanning, as described below.