@Article{MurataFeLaCaPiMe:2014:PePrDe,
               author = "Murata, Camila H. and Fernandes, Diego Camilo and 
                         Lav{\'{\i}}nia, N. C. and Caldas, L. V. E. and Pires, S. R. and 
                         Medeiros, R. B.",
          affiliation = "Coordenadoria de F{\'{\i}}sica e Higiene das 
                         Radia{\c{c}}{\~o}es (CFHR), Departamento de Diagn{\'o}stico por 
                         Imagem, Universidade Federal de S{\~a}o Paulo and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Mosaico Ind. e Com 
                         Eletro Eletr{\^o}nico Ltda; Santo Andr{\'e}} and {Instituto de 
                         Pesquisas Energ{\'e}ticas e Nucleares (IPEN)} and {Universidade 
                         Federal de S{\~a}o Paulo} and {Universidade Federal de S{\~a}o 
                         Paulo}",
                title = "The performance of a prototype device designed to evaluate general 
                         quality parameters of X-ray equipment",
              journal = "Radiation Physics and Chemistry",
                 year = "2014",
               volume = "95",
                pages = "101–105",
                month = "Feb.",
                 note = "{Proceedings of the 12th International Symposium on Radiation 
                         Physics (ISRP 2012)}",
             keywords = "multifunction X-Ray analysis system, solid state detector, 
                         ionizing chamber, quality control tests.",
             abstract = "The performance of radiological equipment can be assessed using 
                         non-invasive methods and portable instruments that can analyze an 
                         X-ray beam with just one exposure. These instruments use either an 
                         ionization chamber or a state solid detector (SSD) to evaluate 
                         X-ray beam parameters. In Brazil, no such instruments are 
                         currently being manufactured; consequently, these instruments come 
                         at a higher cost to users due to importation taxes. Additionally, 
                         quality control tests are time consuming and impose a high 
                         workload on the X-ray tubes when evaluating their performance 
                         parameters. The assessment of some parameters, such as the 
                         half-value layer (HVL), requires several exposures; however, this 
                         can be reduced by using a SSD that requires only a single 
                         exposure. One such SSD uses photodiodes designed for high X-ray 
                         sensitivity without the use of scintillation crystals. This 
                         sensitivity allows one electron-hole pair to be created per 3.63 
                         eV of incident energy, resulting in extremely high and stable 
                         quantum efficiencies. These silicon photodiodes operate by 
                         absorbing photons and generating a flow of current that is 
                         proportional to the incident power. The aim of this study was to 
                         show the response of the solid sensor PIN RD100A detector in a 
                         multifunctional X-ray analysis system that is designed to evaluate 
                         the average peak voltage (kVp), exposure time, and HVL of 
                         radiological equipment. For this purpose, a prototype board that 
                         uses four SSDs was developed to measure kVp, exposure time, and 
                         HVL using a single exposure. The reproducibility and accuracy of 
                         the results were compared to that of different X-ray beam analysis 
                         instruments. The kVp reproducibility and accuracy results were 2% 
                         and 3%, respectively; the exposure time reproducibility and 
                         accuracy results were 2% and 1%, respectively; and the HVL 
                         accuracy was ±2%. The prototype's methodology was able to 
                         calculate these parameters with appropriate reproducibility and 
                         accuracy. Therefore, the prototype can be considered a 
                         multifunctional instrument that can appropriately evaluate the 
                         performance of radiological equipment.",
                  doi = "10.1016/j.radphyschem.2013.03.041",
                  url = "http://dx.doi.org/10.1016/j.radphyschem.2013.03.041",
                 issn = "0969-806X",
                label = "lattes: 7511006554286037 2 MurataFeLaCaPiMe:2013:PePrDe",
             language = "en",
           targetfile = "1-s2.0-S0969806X13001758-main.pdf",
                  url = "http://dx.doi.org/10.1016/j.radphyschem.2013.03.041",
        urlaccessdate = "28 abr. 2024"
}