Abstract
The PTW REX phantom was used to study the radiographic image quality parameters in X-ray devices in the X-ray Diagnostics Department, as well as the system of film processing at the University Hospital of Rio de Janeiro State. X-ray devices were evaluated by performing tests on 11 screen-film combinations from X-ray devices in 3 rooms. The results showed that six film-screen combinations exhibited poor performances. For determination of air kerma output in the X-ray field, two devices presented significant variation >2 %. The grid attenuation factor in three devices had been approved, while two films were within the limits of sensitometric specifications. The modulation transfer function, which evaluates the level of image degradation, revealed that five film-screen combinations exhibited bad performance. The tests with the REX phantom revealed that the X-ray equipment and the system of processing at the University Hospital presented discrepancies in relation to the expected values, contributing to loss of quality of the radiographs.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
