CASTRO, M.C.SILVA, N.F.CALDAS, L.V.E.2018-11-292018-11-292018CASTRO, M.C.; SILVA, N.F.; CALDAS, L.V.E. Testing an extrapolation chamber in computed tomography standard beams. <b>Journal of Physics: Conference Series</b>, v. 975, p. 1-4, 2018. DOI: <a href="https://dx.doi.org/10.1088/1742-6596/975/1/012066">10.1088/1742-6596/975/1/012066</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29291.1742-6588http://repositorio.ipen.br/handle/123456789/29291The computed tomography (CT) is responsible for the highest dose values to the patients. Therefore, the radiation doses in this procedure must be accurate. However, there is no primary standard system for this kind of radiation beam yet. In order to search for a CT primary standard, an extrapolation ionization chamber built at the Calibration Laboratory (LCI) of the Instituto de Pesquisas Energéticas e Nucleares (IPEN), was tested in this work. The results showed to be within the international recommended limits.1-4openAccesscomputerized tomographydepthdosimetryextrapolation chambersleakage currentperformance testingstabilizationstandardsx-ray sourcesbrazilian cnenArtigo de periódico97510.1088/1742-6596/975/1/012066aguardandohttps://orcid.org/0000-0002-7362-2455Sem Percentil16.00