Computer simulation of important parameters of radiological systems

Author(s)

Márcio Alexandre Marques

• Document type: Doctoral Thesis
• Press: São Carlos.
• Institution: Universidade de São Paulo (USP). Instituto de Física de São Carlos (IFSC/BT)
• Defense date: 1998-03-10

Examining board members

Annie France Frere Slaets; Adelaide de Almeida; Linda Viola Ehlin Caldas; Cecil Chow Robilotta; Alberto Tannus

• Advisor: Annie France Frere Slaets

Abstract

This research is part of a work that aims the development of a computer simulation method which allows to evaluate the radiographic image quality in a faster and complete way, so that it doesn\'t present the problems found in the available methods used nowadays. The method developed in this work takes into consideration and simulates the important parameters of the radiologic systems such as: the focal spot size, the intensity distribution focal spot, the geometric conditions exposure, the field heterogeneity, the X-ray angular distribution, the antiscatter grid (Bucky), as well as the Compton effect. This developed computer simulation method achieves the image quality control of an object at any position of the radiation field. The simulation was done implementing the algorithms developed in C language and the results were displayed in a graphic way to facilitate the users comprehension. (AU)