author = "Nunes, Polyana Ferreira and Franco, Marcelo Lemos Nunes and Destro 
                         Filho, Jo{\~a}o Batista and Patroc{\'{\i}}nio, Ana Claudia",
          affiliation = "{Universidade Federal De Uberl{\^a}ndia} and {Universidade 
                         Federal De Uberl{\^a}ndia} and {Universidade Federal De 
                         Uberl{\^a}ndia} and {Universidade Federal De Uberl{\^a}ndia}",
                title = "Quantifica{\c{c}}{\~a}o de fluxo sangu{\'{\i}}neo em 
                         arteriografias utilizando filtro bilateral e sigmoide",
            booktitle = "Proceedings...",
                 year = "2015",
               editor = "Rios, Ricardo Araujo and Paiva, Afonso",
         organization = "Conference on Graphics, Patterns and Images, 28. (SIBGRAPI)",
            publisher = "Sociedade Brasileira de Computa{\c{c}}{\~a}o",
              address = "Porto Alegre",
             keywords = "Arteriography, Encephalic death, Other cases, Bilateral filter, 
                         Sigmoid transformed intensity.",
             abstract = "The arteriography exams are useful for checking abnormalities in 
                         the blood vessels and diseases such as stroke, stenosis, bleeding 
                         and especially in the diagnosis of Encephalic Death in comatose 
                         individuals. Because it is a complementary test in the diagnosis 
                         of brain death, the use of strategies that may help their accuracy 
                         is of paramount importance and, therefore, were compared three 
                         pre-processing techniques. The first technique uses only the 
                         bilateral filter to minimize the noise present in the images, the 
                         second one uses the transformed intensity by Sigmoid to enhance 
                         the arteries before the count of the pixels, and finally, the 
                         third technique uses the bilateral filter along with the 
                         transformed intensity by Sigmoid. After processing, a comparison 
                         with the results of the three techniques was performed in order to 
                         obtain the best one to be used in further processing. For 14 tests 
                         quantified, including Encephalic Death 7 and 7 Other Cases, the 
                         technique achieved a most satisfactory number of pixels quantified 
                         was the second technique, which uses a Sigmoid transformed 
  conference-location = "Salvador",
      conference-year = "Aug. 26-29, 2015",
             language = "pt",
                  ibi = "8JMKD3MGPBW34M/3JSBMQ5",
                  url = "",
           targetfile = "SIBGRAP_2015.pdf",
        urlaccessdate = "2021, Dec. 03"