Simulace rekonstrukčních metod obrazu, využívaných u CT přístrojů

Abstract

The aim of the thesis is to design and create a simulator for modelling image reconstruction methods used in CT devices and modelling artifacts which arise during an image reconstruction. To understand the issue, the thesis is divided into several chapters, where we can find a description of the origin of the ionizing radiation used in CT devices, a description of each generation of CT devices and a principle of a formation of the image using CT devices. Then there is also a mathematical solution of the issue for each reconstructive algorithms used nowadays along with artifacts that may arise during a reconstruction. The following chapters explain basic techniques of image processing that are available in MATLAB and a solution of simulations of image reconstructions together with a simulation of artifact. The last chapter is composed of the description of user interfaces, where are used implemented functions in MATLAB and there is also an own proposal of a solution of image based on the theory.