Conformai external radiotherapy: Requirements and preliminary results

The purpose of conformal radiotherapy is to deliver a specified dose to a tumoral target volume concurrently with irradiating as least as possible healthy tissue and organs at risks. Radiation therapy may suffer from a number of problems that result in both over or under-sizing the irradiation fields, simplifying the irradiation ballistics and delivering an insufficient tumoral dose to spare critical organs and to reduce toxicity. Recent advances in computerized imaging technologies along with the emerging use of robotics in the medical and surgical areas [6] make it possible the improvement of radiation planning and execution. In this paper, we present the different components that we are integrating in a single system devoted to conformal radiotherapy.