1. Institute of Informatics, Federal University of Goias, Goiania, Goiás, Brazil
2. Studies and Researches in Science and Technology Group (GCITE), Federal Institute of Goias (IFG), Goiania, Goiás, Brazil
3. Image Center, Hospital Israelita Albert Einstein, São Paulo, São Paulo, Brazil
4. Federal Institute Goiano, Urutaí, Goiás, Brazil