Filtration influence in a constant potential X-ray machine peak voltage measurements

Lucas Rodrigues Santos; Vitor Vivolo; Marcus Vinícius Teixeira Navarro; Marcos Xavier; Maria da Penha Albuquerque Potiens

doi:10.15392/bjrs.v5i2.261

Filtration influence in a constant potential X-ray machine peak voltage measurements

Authors

Lucas Rodrigues Santos Instituto de Pesquisas Energéticas e Nucleares, Instituto Federal de Educação, Ciência e Tecnologia de São Paulo
Vitor Vivolo Instituto de Pesquisas Energéticas e Nucleares - CNEN /SP
Marcus Vinícius Teixeira Navarro Instituto Federal de Educação, Ciência e Tecnologia do estado da Bahia.
Marcos Xavier Instituto de Pesquisas Energéticas e Nucleares - CNEN /SP
Maria da Penha Albuquerque Potiens Instituto de Pesquisas Energéticas e Nucleares - CNEN /SP

DOI:

https://doi.org/10.15392/bjrs.v5i2.261

Keywords:

peak voltage, practical peak voltage, spectrometry, endpoint, non invasive

Abstract

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 presented errors for heavier filtrations.

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Author Biographies

Vitor Vivolo, Instituto de Pesquisas Energéticas e Nucleares - CNEN /SP

Centro de metrologia das radiações

Marcus Vinícius Teixeira Navarro, Instituto Federal de Educação, Ciência e Tecnologia do estado da Bahia.

Laboratório Pro-Saúde

Marcos Xavier, Instituto de Pesquisas Energéticas e Nucleares - CNEN /SP

Centro de Metrologia das Radiações

Maria da Penha Albuquerque Potiens, Instituto de Pesquisas Energéticas e Nucleares - CNEN /SP

Centro de Metrologia das Radiações.

References

IEC - International Electrotechnical Commission. Medical diagnostic X-ray equipment—Radiation conditions for use in the determination of characteristics: IEC 61267, Geneve: IEC, 2005.

ISO – International Organization for Standardization. X and gamma reference radiations for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy – Part 1: radiation characteristics and production methods: ISO 4037-1, Geneve: ISO, 1996.

HOURDAKIS, C.J. Determination of the diagnostic X-ray tube practical peak voltage (PPV) from average or average peak voltage measurement. Phys. Med. Biol. v. 56, p. 2199–2217, 2011.

JCGM – JOINT COMMITTEE FOR GUIDES IN METROLOGY. Evaluation of measurement data – Guide to the expression of uncertainty in measurement. Sévres, 2008: JCGM, 2008

POTIENS, M. P. A.; CALDAS, L. V. E. . Calibration of kVp meters used in quality control tests in diagnostic radiology by spectrometry. Radiation Protection Dosimetry, Inglaterra, v. 98, n.3, p. 343-346, 2002.

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Published

2017-07-19

How to Cite

Santos, L. R., Vivolo, V., Navarro, M. V. T., Xavier, M., & Potiens, M. da P. A. (2017). Filtration influence in a constant potential X-ray machine peak voltage measurements. Brazilian Journal of Radiation Sciences, 5(2). https://doi.org/10.15392/bjrs.v5i2.261

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Issue

Vol. 5 No. 2 (2017)

Section

Articles

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