Tumors can move between treatment sessions due to changes in organ filling or while breathing. There could also be variation in the patient's position during day-to-day treatment session set up. Untill now, radiation oncologists have been treating patients with external beam radiation therapy in a mathematically precise way but unable to see what is being treated. Artiste technology overcomes this problem. The change in the position of the tumour can be tracked with a CT image just before treatment delivery and corrections to the patient's position are made online.
IGRT with the highest level of precision for a patient and is the most advanced form of radiotherapy today.