LUCAS RODRIGUES DOS SANTOS

Resultados de Busca

Agora exibindo 1 - 3 de 3

Filtration influence in a constant potential X-ray machine peak voltage measurements
2017 - SANTOS, L.R.; VIVOLO, V.; NAVARRO, M.V.T.; XAVIER, M.; POTIENS, M.P.A.
This work shows the peak voltage measurements for several beam filtrations used in diagnostic radiology, using two types of non-invasive detectors; a voltage meter and a high-resolution spectrometer. The technique chosen for the voltage peak measurements with the spectrometer was the endpoint. The results were compared to the measured ones and showed good similarity to the nominal values. However the voltage meter detector used in this work pre-sented errors for heavier filtrations.
Mammography calibration qualities establishment in a Mo-Mo clinical system
2016 - CORREA, E.L.; SANTOS, L.R. dos; VIVOLO, V.; POTIENS, M.P.A.
In this study the mammography calibration qualities were established in a clinical mammography system. The objective is to provide the IPEN instruments calibration laboratory with both mammography calibration methods (using a clinical and an industrial system). The results showed a good behavior of mammography equipment, in terms of kVp, PPV and exposure time. The additional filtration of molybdenum is adequate, air-kerma rates were determined and spectra were obtained.
Mammography calibration qualities establishment in a Mo-Mo clinical system
2015 - CORREA, E.L.; SANTOS, L.R. dos; VIVOLO, V.; POTIENS, M.P.A.