Filtration influence in a constant potential X-ray machine peak voltage measurements
DOI:
https://doi.org/10.15392/bjrs.v5i2.261Keywords:
peak voltage, practical peak voltage, spectrometry, endpoint, non invasiveAbstract
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.Downloads
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.
Published
Issue
Section
License
Licensing: The BJRS articles are licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
How to Cite
