Brazilian Dental Journal | |
Effects of aluminum-copper alloy filtration on photon spectra, air kerma rate and image contrast | |
Andréa Gonçalves2  João Manuel Domingos De Almeida Rollo1  Marcelo Gonçalves2  Francisco Haiter Neto1  Frab Norberto Bóscolo1  | |
[1] ,UNESP Araraquara Dental School Division of Dentomaxillofacial RadiologyAraraquara SP ,Brazil | |
关键词: filtration; dental radiography; alloys; | |
DOI : 10.1590/S0103-64402004000300010 | |
来源: SciELO | |
【 摘 要 】
This study evaluated the performance of aluminum-copper alloy filtration, without the original aluminum filter, for dental radiography in terms of x-ray energy spectrum, air kerma rate and image quality. Comparisons of various thicknesses of aluminum-copper alloy in three different percentages were made with aluminum filtration. Tests were conducted on an intra-oral dental x-ray machine and were made on mandible phantom and on step-wedge. Depending on the thickness of aluminum-copper alloy filtration, the beam could be hardened and filtrated. The use of the aluminum-copper alloy filter resulted in reductions in air kerma rate from 8.40% to 47.33%, and indicated the same image contrast when compared to aluminum filtration. Aluminum-copper alloy filtration may be considered a good alternative to aluminum filtration.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
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RO202005130109278ZK.pdf | 229KB | download |