author = "Polvi, S. and Busechian, V.",
          affiliation = "Ital-TBS and CRS-TBS",
                title = "The problem of image quality assessment in computed tomography and 
                         in magnetic resonance imaging",
            booktitle = "Anais...",
                 year = "1995",
               editor = "Lotufo, Roberto de Alencar and Mascarenhas, Nelson Delfino 
                pages = "27--34",
         organization = "Simp{\'o}sio Brasileiro de Computa{\c{c}}{\~a}o Gr{\'a}fica e 
                         Processamento de Imagens, 8. (SIBGRAPI)",
            publisher = "Sociedade Brasileira de Computa{\c{c}}{\~a}o",
              address = "Porto Alegre",
             keywords = "computed tomography, magnetic resonance, image quality 
             abstract = "The meaning and the aims of Quality Controls (QC) in Diagnostic 
                         Radiology are discussed, underlining the basic philosophy of 
                         Quality and the difference between the concept of Quality Controls 
                         and Quality Assurance. A brief overview of QC in Computed 
                         Tomography is given describing the main advantages. The methods 
                         are similar in Magnetic Resonance Imaging (MRI) but far more 
                         complex. Therefore only the method for the measurement of 
                         Signal-to-Noise ratio (SNR) is examined in detail while the other 
                         image quality parameters are just mentioned. As an example of a 
                         right method for the evaluation of image quality in MRI, a new 
                         technique for the measurement of SNR based on a spatial 
                         frequencies domain analysis is proposed. Finally some guidelines 
                         for the personnel involved in QC activity are provided.",
  conference-location = "S{\~a}o Carlos",
      conference-year = "25 - 27 out. 1995",
                 isbn = "978-85-7669-273-7",
             language = "en",
                  ibi = "8JMKD3MGPBW34M/3DG9L6B",
                  url = "",
           targetfile = "3 The problem of image.pdf",
                 type = "Palestras Internacionais",
        urlaccessdate = "2020, Nov. 24"