Vliv pohybu ložiska na přesnost dodání terapeutické dávky pomocí robotnického ozařovače

Abstract

The topic of my thesis is the delivery of the prescribed dose to an irradiated target especially when the target itself cannot be tracked directly. The whole thesis is divided into several parts. General principles of radiation therapy are described; next part focuses on the robotic linear accelerator CyberKnife and its components. Analysis of the problems of moving targets, the process of preparation and implementation of measurements including the implementation and analysis of results follows. For lung cancer treatments CyberKnife system offers a specific methods for target tracking. In cases when we can’t use any tracking method for moving targets, we track the patient position using spine structures. The irradiated volume which includes the whole area of target range of movements is called ITV. The aim of the thesis is to verify the accuracy of prescribed dose delivery to the internal target volume (ITV) using current methods of treatment planning.